Dynamic Analysis Intro

[rlara]

Hi everyone:

I am new to dynamic analysis and would like to get the general idea of what should be done while doing a dynamic analysis.

My resources are COSMO/Works(wich gives me static analysis and modal analysis), and a pencil and calculator.

The problems im involed in are mainly for space applications, so usually products spec define that component should have a certain natural frequency or
should withstand loads of X*G .

The problem comes down to how to determine if my component will not fail if the specified G load is aplied. What should i look for to see if the component or assembly will withstand the loads. Can the dynamic load be considered as a shock load? Can i relly in static analysis to determine if component will withstand load? Should the component be modeled as a spring mass system in order to determine deflections?

Anther questions is what does simply suported mean?

Thanks for your help

 

[tomirvine]

Ideally, the component has already been subjected to shock and vibration testing, and the component has passed these tests.

You can then compare your analytical predictions to the test levels.

A good reference is:

D. Steinberg, Vibration Analysis for Electronic Equipment, Wiley-Interscience, New York, 1988.

Available from:

http://www.amazon.com/exec/obidos/ASIN/047137685X/vibrationdata-20/104-7954174-2585556

This text covers mechanical structures as well as electronic equipment.

Tom Irvine

http://www.vibrationdata.com