Loads and Dynamics
79
Loads and structural dynamics is a specialty branch of structural and mechanical engineering that deals with the determination of the vibration response of a structure subjected to dynamic (time varying) forces in its operational environment. In aerospace applications dynamic loads include applied forces such as wind forces, mechanical and pyrotechnic shock, acoustic pressures, engine or rocket thrust, plume impingement forces, aerodynamic fluctuating pressures, control system forces, and contact forces. In dynamic analysis the structural response may be determined as the frequencies and mode shapes of vibration, and the time histories or frequency response spectra of displacement, velocity, acceleration, internal force, or stress. Dynamic analysis can be performed by classical methods (closed-form solutions or formulae, and hand calculations) or by a number of modern numerical methods such as Finite Element Analysis (FEA), Boundary Element Analysis (BEA), and Statistical Energy Analysis (SEA). The magnitude of the responses of concern may span from millions of pounds as in a launch vehicle internal load to micro-g''s as in an on-orbit experiment vibration environment.
Upcoming Webcasts
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A Unified Approach to Modal Reduction Methods
| Presenter | Dr. Arya Majed |
|---|---|
| Published | June 2015 |
| Recorded | January 2015 |
| Duration | 01:49:48 |
| Tags | #Intermediate, ~Coupled Loads Analysis, ~Equation of Motion, ~Model Reduction, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics<br>Original Webcast Air Date: April 22, 2015<br><br>A survey of the papers on modal reduction methods exhibits a variety of mathematical techniques and procedures utilized by the developers of each method. For example, Hurty and Craig/Bampton utilized a Rayleigh-Ritz procedure to derive their fixed-boundary methods. MacNeal used electrical circuits analogies for his free-boundary method. Rubin improved MacNeal's method with a non-Rayleigh-Ritz procedure involving a power series expansion. Craig/Chang and Benfield/Hruda offered modal reduction methods which require special modal synthesis procedures. Hintz utilized an adhoc technique with some features of other techniques to derive a mixed-boundary method. The end result of this has been confusion and uncertainty on the part of engineers with the consequence of often opting for the simplest of the methods, Craig/Bampton for all applications. In addition, some methods, such as Hintz mixed-boundary, have gone largely unrecognized due to the complex language/procedures of the paper. Another unfortunate consequence has been some methods being utilized beyond their mathematical limitations, and when not performing, unfairly eliminated as faulty. <br>Part 1 of this two part series on modal synthesis methods presents a unified mathematical approach to the derivation of the modal reduction methods. The presenter provides a single mathematical tool capable of deriving all methods of modal reduction including the more involved mixed-boundary methods. With this, the user gains an immediate level of comfort with all approaches including the more exotic methods. In addition, with the ability to now derive the method, the assumptions, approximations, application and pitfalls of each method automatically become more clear. Another objective of this presentation is to enable the engineers to develop their own NASTRAN/DMAP or other computer programs for implementing any of the modal reduction methods. <br>A quick preview of Part 2: The Part 2 presentation is concerned with the modal synthesis methods themselves. Again, an attempt is made to unify this important subject as much as possible. In addition to modal synthesis methods, methods for recovery of dynamic response including modal acceleration, residual flexibility, and residual vectors are considered. Part 2 also includes special topics including generalized Guyan, Improved Reduced System (IRS), and System Equivalent Reduction Expansion Process (SEREP) utilized in the development of test analytical models (TAMs).
Force Limited Vibration Testing: A Review of Existing and New Methods
| Presenter | Dr. Ali Kolaini |
|---|---|
| Published | August 2014 |
| Recorded | March 2014 |
| Duration | 01:31:53 |
| Tags | #State of the Art, ~Random Vibration, ~Response Acceleration, ~Structural Dynamics, ~Modal Testing, ~Forced Response, .Testing |
Discipline: Loads & Dynamics<br>Originally webcast Live on: June 23, 2014<br><br>The force limited vibration test approaches discussed in NASA-7004C were developed to reduce overtesting associated with base shake vibration tests of aerospace hardware, where the interface responses are excited coherently. This handbook outlines several different methods of specifying the force limits. The rationale for force limiting is based on the disparity between the impedances of typical aerospace mounting structures and the large impedances of vibration test shakers. Among these approaches, the semi-empirical method is presently the most widely used method to derive the force limiting specifications. The inclusion of the incoherent excitation of the aerospace structures at mounting interfaces provides the basis for more realistic force limits to qualify the flight hardware using shaker testing. In this presentation the existing methods for defining the force limiting specifications discussed in the NASA handbook are reviewed using data recently obtained from a series of acoustic and vibration tests. New approaches based on considering the incoherent excitation of the structural mounting interfaces using acoustic test data are discussed. It is believed that the new approaches provide much more realistic force limits that may further remove conservatism inherent in shaker vibration testing not accounted for by methods discussed in the NASA handbook. A discussion on using FEM/BEM analysis to obtain force limits for flight hardware is also provided.<br><br>Discipline: Loads & Dynamics
Introduction & Data Conversion Utilities
| Presenter | Tom Irvine |
|---|---|
| Published | July 2011 |
| Recorded | October 2011 |
| Duration | 25:58 |
| Tags | #Fundamental, ~Structural Dynamics, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Learning from the Past and Looking to the Future 01: Introduction to Loads & Dynamics and System Integration
| Presenter | Dr. Curt Larsen |
|---|---|
| Published | November 2016 |
| Recorded | June 2016 |
| Duration | 50:45 |
| Tags | #Fundamental, ~Coupled Loads Analysis, ~Model Reduction, ~Induced Environments, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Learning from the Past and Looking to the Future 02: Rollout Loads
| Presenter | Dr. Curt Larsen |
|---|---|
| Published | December 2016 |
| Recorded | June 2016 |
| Duration | 01:21:23 |
| Tags | #Intermediate, ~Coupled Loads Analysis, ~Structural Dynamics, ~Transient Response Loads, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Learning from the Past and Looking to the Future 03: Liftoff Facilitated Discussion
| Presenter | Dr. Curt Larsen |
|---|---|
| Published | January 2017 |
| Recorded | June 2016 |
| Duration | 01:31:03 |
| Tags | #Intermediate, ~Coupled Loads Analysis, ~Structural Dynamics, ~Transient Response Loads, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
- Course Materials
- Confirmation of Attendance
- Dr. Curt Larsen's Biography
- Bob Ryan's Biography
- Tom Modlin's Biography
- Alden Mackey's Biography
- NESC Academy (Loads & Dynamics Catalog)
- NESC Academy Online
- Loads & Dynamics Community of Practice
- Feedback
- ͏
- Course Catalog: Learning from the Past and Looking to the Future
Learning from the Past and Looking to the Future 04: Stud Hangup, Part 1
| Presenter | Dr. Curt Larsen |
|---|---|
| Published | November 2016 |
| Recorded | June 2016 |
| Duration | 18:49 |
| Tags | #Intermediate, ~Coupled Loads Analysis, ~Structural Dynamics, ~Transient Response Loads, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Learning from the Past and Looking to the Future 07: Pogo Heritage, Part 1
| Presenter | Dr. Hal Doiron |
|---|---|
| Published | July 2016 |
| Recorded | May 2016 |
| Duration | 01:03:04 |
| Tags | #Intermediate, ~Coupled Loads Analysis, ~Structural Dynamics, ~Transient Response Loads, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Learning from the Past and Looking to the Future 07: Pogo Heritage, Part 2
| Presenter | Dr. Hal Doiron |
|---|---|
| Published | July 2016 |
| Recorded | May 2016 |
| Duration | 01:02:01 |
| Tags | #Intermediate, ~Coupled Loads Analysis, ~Structural Dynamics, ~Transient Response Loads, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Learning from the Past and Looking to the Future 10: Lunar Landing
| Presenter | Dr. George A Zupp |
|---|---|
| Published | January 2017 |
| Recorded | June 2016 |
| Duration | 50:39 |
| Tags | #Intermediate, ~Coupled Loads Analysis, ~Structural Dynamics, ~Transient Response Loads, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Learning from the Past and Looking to the Future 11: Culture Panel
| Presenter | Dr. Curt Larsen |
|---|---|
| Published | January 2017 |
| Recorded | June 2016 |
| Duration | 01:26:56 |
| Tags | #Fundamental, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Learning from the Past and Looking to the Future 12: System Integration
| Presenter | Dr. Curt Larsen |
|---|---|
| Published | January 2017 |
| Recorded | June 2016 |
| Duration | 54:56 |
| Tags | #Intermediate, ~Coupled Loads Analysis, ~Structural Dynamics, ~Transient Response Loads, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Quantification of SLS Dynamic Model Validation Metrics using Uncertainty Propagation from Requirements
| Presenter | Dr. Andy Brown |
|---|---|
| Published | August 2018 |
| Recorded | August 2018 |
| Duration | 29:29 |
| Tags | None |
Shock & Vibration: 01. Natural Frequencies, Part 1
| Presenter | Tom Irvine |
|---|---|
| Published | February 2014 |
| Recorded | February 2014 |
| Duration | 56:56 |
| Tags | #Fundamental, ~Natural Frequencies, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 02. Natural Frequencies, Part 2
| Presenter | Tom Irvine |
|---|---|
| Published | February 2014 |
| Recorded | February 2014 |
| Duration | 50:54 |
| Tags | #Intermediate, #Fundamental, ~Natural Frequencies, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 03. Natural Frequencies, Part 3
| Presenter | Tom Irvine |
|---|---|
| Published | August 2014 |
| Recorded | February 2014 |
| Duration | 55:33 |
| Tags | #Intermediate, #Fundamental, ~Natural Frequencies, .Analysis / Modeling and Simulation, .Testing, ~Shaker Table |
Discipline: Loads & Dynamics
Shock & Vibration: 04. Sine Vibration
| Presenter | Tom Irvine |
|---|---|
| Published | October 2014 |
| Recorded | February 2014 |
| Duration | 59:02 |
| Tags | #Intermediate, ~Response Acceleration, .Analysis / Modeling and Simulation, ~Pogo, ~Thrust Oscillation |
Discipline: Loads & Dynamics
Shock & Vibration: 05. Sine Sweep Vibration
| Presenter | Tom Irvine |
|---|---|
| Published | October 2014 |
| Recorded | February 2014 |
| Duration | 45:36 |
| Tags | #Intermediate, ~Natural Frequencies, .Analysis / Modeling and Simulation, ~Thrust Oscillation |
Discipline: Loads & Dynamics
Shock & Vibration: 06. Random Vibration
| Presenter | Tom Irvine |
|---|---|
| Published | October 2014 |
| Recorded | February 2014 |
| Duration | 56:22 |
| Tags | #Intermediate, #Fundamental, ~Random Vibration, .Analysis / Modeling and Simulation, ~White Noise |
Discipline: Loads & Dynamics
Shock & Vibration: 07. Fourier Transform
| Presenter | Tom Irvine |
|---|---|
| Published | September 2014 |
| Recorded | September 2014 |
| Duration | 56:57 |
| Tags | #Intermediate, #Fundamental, ~Fourier Transform, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 08. Leakage & Hanning Windows
| Presenter | Tom Irvine |
|---|---|
| Published | October 2014 |
| Recorded | September 2014 |
| Duration | 23:02 |
| Tags | #Intermediate, ~Fourier Transform, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 09. Fast Fourier Transform (FFT)
| Presenter | Tom Irvine |
|---|---|
| Published | October 2014 |
| Recorded | September 2014 |
| Duration | 01:10:02 |
| Tags | #Intermediate, #Fundamental, ~Fourier Transform, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 10. Waterfall FFT
| Presenter | Tom Irvine |
|---|---|
| Published | October 2014 |
| Recorded | September 2014 |
| Duration | 36:51 |
| Tags | #Fundamental, ~Fourier Transform, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 11. White Noise FFT
| Presenter | Tom Irvine |
|---|---|
| Published | October 2014 |
| Recorded | September 2014 |
| Duration | 19:23 |
| Tags | #Intermediate, ~Fourier Transform, ~Random Vibration, .Analysis / Modeling and Simulation, ~White Noise |
Discipline: Loads & Dynamics
Shock & Vibration: 12. Sample Rate, Nyquist Frequency & Aliasing
| Presenter | Tom Irvine |
|---|---|
| Published | November 2014 |
| Recorded | October 2014 |
| Duration | 37:15 |
| Tags | #Fundamental, ~Signal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 13. Power Spectral Density Function
| Presenter | Tom Irvine |
|---|---|
| Published | November 2014 |
| Recorded | October 2014 |
| Duration | 01:04:38 |
| Tags | #Intermediate, ~Power Spectral Density, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 14. Power Spectral Density Data
| Presenter | Tom Irvine |
|---|---|
| Published | February 2015 |
| Recorded | December 2014 |
| Duration | 42:35 |
| Tags | #Intermediate, ~Power Spectral Density, .Analysis / Modeling and Simulation, ~White Noise |
Discipline: Loads & Dynamics
Shock & Vibration: 15. SDOF Response to PSD Base Input
| Presenter | Tom Irvine |
|---|---|
| Published | February 2015 |
| Recorded | December 2014 |
| Duration | 47:06 |
| Tags | #Intermediate, #Fundamental, ~Power Spectral Density, ~Signal Analysis, ~Random Vibration, .Analysis / Modeling and Simulation, ~White Noise |
Discipline: Loads & Dynamics
Shock & Vibration: 16. Power Spectral Density Synthesis
| Presenter | Tom Irvine |
|---|---|
| Published | February 2015 |
| Recorded | December 2014 |
| Duration | 56:18 |
| Tags | #Intermediate, ~Fourier Transform, ~Power Spectral Density, ~Signal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 17. SDOF Response to Base Input in the Frequency Domain
| Presenter | Tom Irvine |
|---|---|
| Published | March 2015 |
| Recorded | January 2015 |
| Duration | 01:05:29 |
| Tags | #Intermediate, #Fundamental, ~Power Spectral Density, ~Signal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 18. General Method for Calculating VRS
| Presenter | Tom Irvine |
|---|---|
| Published | March 2015 |
| Recorded | January 2015 |
| Duration | 01:05:12 |
| Tags | #Intermediate, #Fundamental, ~Power Spectral Density, ~Signal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 19. SDOF Response to Applied Force
| Presenter | Tom Irvine |
|---|---|
| Published | March 2015 |
| Recorded | January 2015 |
| Duration | 01:16:19 |
| Tags | #Intermediate, #Fundamental, ~Signal Analysis, ~Frequency Response, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 20. Force Vibration Response Spectrum
| Presenter | Tom Irvine |
|---|---|
| Published | March 2015 |
| Recorded | January 2015 |
| Duration | 57:57 |
| Tags | #Intermediate, ~Power Spectral Density, ~Signal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 21. Digital Filtering, Part 1
| Presenter | Tom Irvine |
|---|---|
| Published | March 2015 |
| Recorded | January 2015 |
| Duration | 48:32 |
| Tags | #Intermediate, #Fundamental, ~Signal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 22. Digital Filtering, Part 2
| Presenter | Tom Irvine |
|---|---|
| Published | March 2015 |
| Recorded | February 2015 |
| Duration | 45:58 |
| Tags | #Intermediate, ~Power Spectral Density, ~Signal Analysis, ~Coupled Loads Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 23. Integration and Differentiation of Time Histories, Part 1
| Presenter | Tom Irvine |
|---|---|
| Published | March 2015 |
| Recorded | February 2015 |
| Duration | 58:53 |
| Tags | #Intermediate, #Fundamental, ~Fourier Transform, ~Power Spectral Density, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 24. Integration and Differentiation of Time Histories, Part 2
| Presenter | Tom Irvine |
|---|---|
| Published | March 2015 |
| Recorded | February 2015 |
| Duration | 47:13 |
| Tags | #Intermediate, ~Fourier Transform, ~Power Spectral Density, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 25. Sound File Processing
| Presenter | Tom Irvine |
|---|---|
| Published | March 2015 |
| Recorded | March 2015 |
| Duration | 23:29 |
| Tags | #Intermediate, #Fundamental, ~Fourier Transform, ~Signal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 26. Response to Classical Pulse Excitation
| Presenter | Tom Irvine |
|---|---|
| Published | March 2015 |
| Recorded | March 2015 |
| Duration | 57:06 |
| Tags | #Intermediate, #Fundamental, ~Shock Response Spectrum, ~Response Acceleration, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 27. Seismic Shock
| Presenter | Tom Irvine |
|---|---|
| Published | April 2015 |
| Recorded | March 2015 |
| Duration | 53:43 |
| Tags | #Intermediate, #Fundamental, ~Shock Response Spectrum, ~Response Acceleration, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 28. Pyrotechnic Shock Response, Part 1
| Presenter | Tom Irvine |
|---|---|
| Published | May 2015 |
| Recorded | March 2015 |
| Duration | 01:00:42 |
| Tags | #Intermediate, ~Natural Frequencies, ~Shock Response Spectrum, ~Response Acceleration, ~Circuit Boards, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 29. Pyrotechnic Shock Response, Part 2
| Presenter | Tom Irvine |
|---|---|
| Published | May 2015 |
| Recorded | March 2015 |
| Duration | 51:24 |
| Tags | #Intermediate, ~Natural Frequencies, ~Shock Response Spectrum, ~Response Acceleration, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 30. SRS Synthesis - Wavelets
| Presenter | Tom Irvine |
|---|---|
| Published | May 2015 |
| Recorded | March 2015 |
| Duration | 43:56 |
| Tags | #Intermediate, ~Shock Response Spectrum, ~Response Acceleration, ~Frequency Response, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 31. SRS Synthesis - Damped Sines
| Presenter | Tom Irvine |
|---|---|
| Published | May 2015 |
| Recorded | March 2015 |
| Duration | 28:27 |
| Tags | #Intermediate, ~Signal Analysis, ~Shock Response Spectrum, ~Modal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 32. Multi-degree-of-freedom System Shock Response Spectrum, Part 1
| Presenter | Tom Irvine |
|---|---|
| Published | April 2015 |
| Recorded | March 2015 |
| Duration | 40:18 |
| Tags | #Intermediate, ~Shock Response Spectrum, ~Modal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 33. Multi-degree-of-freedom System Shock Response Spectrum, Part 2
| Presenter | Tom Irvine |
|---|---|
| Published | May 2015 |
| Recorded | March 2015 |
| Duration | 31:38 |
| Tags | #Intermediate, ~Shock Response Spectrum, ~Modal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 34. Stress Velocity, Part 1
| Presenter | Tom Irvine |
|---|---|
| Published | May 2015 |
| Recorded | March 2015 |
| Duration | 34:59 |
| Tags | #Intermediate, #Fundamental, ~Natural Frequencies, ~Structural Dynamics, ~Modal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 35. Stress Velocity, Part 2
| Presenter | Tom Irvine |
|---|---|
| Published | May 2015 |
| Recorded | March 2015 |
| Duration | 47:47 |
| Tags | #Intermediate, ~Natural Frequencies, ~Structural Dynamics, ~Modal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 36. Rectangular Plate Shock and Vibration
| Presenter | Tom Irvine |
|---|---|
| Published | May 2015 |
| Recorded | April 2015 |
| Duration | 55:27 |
| Tags | #Intermediate, ~Response Acceleration, ~Structural Dynamics, ~Frequency Response, ~Modal Testing, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 37. Rectangular & Circular Plate Shock & Vibration
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 01:03:47 |
| Tags | #Intermediate, ~Random Vibration, ~Natural Frequencies, ~Response Acceleration, ~Structural Dynamics, ~Modal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 38. Circuit Board Fatigue Response to Random Vibration, Part 1
| Presenter | Tom Irvine |
|---|---|
| Published | May 2015 |
| Recorded | April 2015 |
| Duration | 40:14 |
| Tags | #Intermediate, ~Random Vibration, ~Circuit Boards, ~Fatigue, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 39. Rainflow Cycle Counting for Random Vibration Fatigue Analysis
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 01:07:26 |
| Tags | #Intermediate, ~Power Spectral Density, ~Random Vibration, ~Response Acceleration, ~Fatigue, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics<br>
Shock & Vibration: 40. Rainflow Cycle Counting for Continuous Beams
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 48:06 |
| Tags | #Intermediate, ~Power Spectral Density, ~Natural Frequencies, ~Fatigue, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 41. Using Fatigue to Compare Sine and Random Environments
| Presenter | Tom Irvine |
|---|---|
| Published | May 2015 |
| Recorded | April 2015 |
| Duration | 58:51 |
| Tags | #Intermediate, ~Power Spectral Density, ~Signal Analysis, ~Random Vibration, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics<br>
Shock & Vibration: 42. Non-Gaussian Random Fatigue and Peak Response
| Presenter | Tom Irvine |
|---|---|
| Published | May 2015 |
| Recorded | April 2015 |
| Duration | 01:00:38 |
| Tags | #Intermediate, ~Signal Analysis, ~Random Vibration, ~Frequency Response, ~Fatigue, .Analysis / Modeling and Simulation, ~White Noise |
Discipline: Loads & Dynamics
Shock & Vibration: 43. Acoustic Fatigue
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 59:24 |
| Tags | #Intermediate, #Fundamental, ~Signal Analysis, ~Frequency Response, ~Fatigue, .Analysis / Modeling and Simulation, ~White Noise |
Discipline: Loads & Dynamics
Shock & Vibration: 44. Circuit Board Fatigue Response to Random Vibration, Part 2
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 01:01:25 |
| Tags | #Intermediate, ~Power Spectral Density, ~Random Vibration, ~Natural Frequencies, ~Shock Response Spectrum, ~Frequency Response, ~Circuit Boards, ~Fatigue, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Shock & Vibration: 45. Sine-on-Random Vibration
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 58:30 |
| Tags | #Intermediate, ~Power Spectral Density, ~Signal Analysis, ~Random Vibration, ~Natural Frequencies, ~Shock Response Spectrum, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics<br>
Shock & Vibration: 46. Shock Fatigue
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 01:17:04 |
| Tags | #Intermediate, ~Power Spectral Density, ~Random Vibration, ~Natural Frequencies, ~Shock Response Spectrum, ~Frequency Response, ~Fatigue, .Analysis / Modeling and Simulation, ~Shaker Table |
Discipline: Loads & Dynamics<br>
Shock & Vibration: 47. PSD Special Topics
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 55:43 |
| Tags | #Intermediate, ~Power Spectral Density, ~Signal Analysis, ~Frequency Response, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics<br>
Shock & Vibration: 48. Shock Special Topics
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 01:15:34 |
| Tags | #Intermediate, ~Signal Analysis, ~Shock Response Spectrum, ~Frequency Response, .Analysis / Modeling and Simulation, ~Shaker Table |
Discipline: Loads & Dynamics<br>
Shock & Vibration: 49. Two Degree of Freedom Systems
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 44:41 |
| Tags | #Fundamental, ~Shock Response Spectrum, ~Structural Dynamics, ~Frequency Response, .Analysis / Modeling and Simulation, ~Acceleration |
Discipline: Loads & Dynamics<br>
Shock & Vibration: 50. Sine Filtering
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 36:43 |
| Tags | #Fundamental, ~Signal Analysis, ~Frequency Response, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics<br>
Shock & Vibration: 51. Two Degree of Freedom Systems with Translation & Rotation
| Presenter | Tom Irvine |
|---|---|
| Published | June 2015 |
| Recorded | April 2015 |
| Duration | 01:00:20 |
| Tags | #Fundamental, ~Natural Frequencies, ~Structural Dynamics, ~Modal Analysis, ~Forced Response, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics<br>
Unit 01c - Bridge Natural Frequencies
| Presenter | Tom Irvine |
|---|---|
| Published | February 2011 |
| Recorded | October 2011 |
| Duration | 25:35 |
| Tags | #Fundamental, ~Natural Frequencies, ~Structural Dynamics, ~Fatigue, .Design, .Materials, .Environments, ~Vibration Damping |
Discipline: Loads & Dynamics
Unit 01d - Building Natural Frequencies
| Presenter | Tom Irvine |
|---|---|
| Published | April 2011 |
| Recorded | October 2011 |
| Duration | 22:36 |
| Tags | #Fundamental, ~Natural Frequencies, ~Structural Dynamics, .Design, .Materials, .Environments, ~Vibration Damping |
Discipline: Loads & Dynamics
Unit 02 - Sine Vibration
| Presenter | Tom Irvine |
|---|---|
| Published | February 2011 |
| Recorded | October 2011 |
| Duration | 48:11 |
| Tags | #Intermediate, ~Signal Analysis, ~Natural Frequencies, ~Frequency Response, .Analysis / Modeling and Simulation, .Testing, ~Shaker Table, ~Pogo |
Discipline: Loads & Dynamics<br><br>Keywords: Sine Vibration, Oscillation, Loads, Dynamics, Irvine, Pogo, Damping
Unit 03 - Sine Sweep Vibration
| Presenter | Tom Irvine |
|---|---|
| Published | July 2011 |
| Recorded | October 2011 |
| Duration | 33:40 |
| Tags | #Intermediate, ~Signal Analysis, ~Natural Frequencies, ~Frequency Response, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Unit 04 - Random Vibration
| Presenter | Tom Irvine |
|---|---|
| Published | July 2011 |
| Recorded | October 2011 |
| Duration | 43:07 |
| Tags | #Intermediate, ~Signal Analysis, ~Random Vibration, .Analysis / Modeling and Simulation, ~White Noise |
Discipline: Loads & Dynamics
Unit 06a - Fourier Transforms: Applications
| Presenter | Tom Irvine |
|---|---|
| Published | July 2011 |
| Recorded | October 2011 |
| Duration | 42:45 |
| Tags | #Intermediate, ~Fourier Transform, ~Signal Analysis, ~Natural Frequencies, ~Frequency Response, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Unit 10b - Electronic Component Fatigue
| Presenter | Tom Irvine |
|---|---|
| Published | June 2011 |
| Recorded | October 2011 |
| Duration | 17:13 |
| Tags | #Intermediate, ~Random Vibration, ~Circuit Boards, ~Fatigue, .Analysis / Modeling and Simulation, .Hardware, .Systems / Subsystems |
Discipline: Loads & Dynamics
Unit 13 - Synthesizing a Time History to Satisfy a Power Spectral Density using Random Vibration
| Presenter | Tom Irvine |
|---|---|
| Published | July 2011 |
| Recorded | October 2011 |
| Duration | 32:37 |
| Tags | #Intermediate, ~Fourier Transform, ~Power Spectral Density, ~Random Vibration, ~Frequency Response, .Analysis / Modeling and Simulation, ~White Noise |
Discipline: Loads & Dynamics
Unit 16 - Sample Rate & Nyquist Frequency for Data Acquisition & Telemetry Systems
| Presenter | Tom Irvine |
|---|---|
| Published | June 2011 |
| Recorded | October 2011 |
| Duration | 24:18 |
| Tags | #Intermediate, ~Signal Analysis, ~Shock Response Spectrum, ~Frequency Response, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Unit 17 - Aliasing Errors in Signal Analysis
| Presenter | Tom Irvine |
|---|---|
| Published | June 2011 |
| Recorded | October 2011 |
| Duration | 23:33 |
| Tags | #Intermediate, ~Fourier Transform, ~Signal Analysis, ~Frequency Response, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Unit 21 - Shock Response Spectra of Classical Pulses
| Presenter | Tom Irvine |
|---|---|
| Published | February 2011 |
| Recorded | October 2011 |
| Duration | 25:44 |
| Tags | #Intermediate, #Fundamental, ~Natural Frequencies, ~Shock Response Spectrum, ~Equation of Motion, .Analysis / Modeling and Simulation |
Discipline - Loads & Dynamics
Unit 22a - Shock Response Spectrum (SRS) Seismic Pulses
| Presenter | Tom Irvine |
|---|---|
| Published | February 2011 |
| Recorded | October 2011 |
| Duration | 33:17 |
| Tags | #Intermediate, ~Natural Frequencies, ~Shock Response Spectrum, ~Frequency Response, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Unit 22b - Wavelet Synthesis
| Presenter | Tom Irvine |
|---|---|
| Published | July 2011 |
| Recorded | October 2011 |
| Duration | 22:09 |
| Tags | #Intermediate, ~Shock Response Spectrum, ~Transient Response Loads, ~Modal Analysis, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Unit 22c - Damped Sine Synthesis
| Presenter | Tom Irvine |
|---|---|
| Published | July 2011 |
| Recorded | October 2011 |
| Duration | 31:33 |
| Tags | #Intermediate, ~Signal Analysis, ~Shock Response Spectrum, ~Response Acceleration, ~Transient Response Loads, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
Unit 33 - Digitizing Plots
| Presenter | Tom Irvine |
|---|---|
| Published | July 2011 |
| Recorded | October 2011 |
| Duration | 13:09 |
| Tags | #Intermediate, #Fundamental, ~Power Spectral Density, ~Signal Analysis, ~Shock Response Spectrum, .Analysis / Modeling and Simulation |
Discipline: Loads & Dynamics
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