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Mechanical vibration and shock control 
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#1
Sep808, 04:11 AM

P: 9

Please could anyone help me on the topic "Controlling the vibration and shocks received by elctronicmechanical components"?



#2
Sep808, 06:36 AM

Sci Advisor
P: 5,095

Sure. Take a year or two of college classes and then learn more under a mentor in the field.
Can you be a bit more specific with your request? 


#3
Sep808, 08:07 PM

P: 9

Thank you fred for your reply and suggestions.
I will start learning on the topic and will be enquiring where i get strucked. I will try to mention the topic more specific. The first query from me "What is natural frequency and how it can be obtained or estimated?". 


#4
Sep808, 09:05 PM

Sci Advisor
P: 5,095

Mechanical vibration and shock control
The natural frequency is a vibration mode that is inherent to all structures. It is the frequency that the structure will vibrate at if the body is given a single impulse. In other words, it is the frequency that the body will vibrate at on its own, without an external forcing of any kind other than an initial "push."
Natural frequencies are calculated as well as measured through various techniques such as modal analysis. 


#5
Sep808, 09:14 PM

P: 9

Thanks fred.
Where can i get an example of calculating the natural frequency by modal analysis? Please help me. Any links so that i can get a clear picture on this? 


#6
Sep808, 10:34 PM

P: 52



#7
Sep808, 10:45 PM

P: 9

Thank you so much rb.. let me go through this.



#8
Sep808, 11:47 PM

P: 9

How the materials fails when it is subjected to excitation?
what are the influencing factors? Material fails is it because of lone factor "excitation frequncy reaches more than the natural frequency?". 


#9
Sep908, 06:50 AM

Sci Advisor
P: 5,095

The influencing factors are the basics of fatigue and strength of materials. If you excite a structure's natural frequency, it can take no time at all for that structure to reach its fatigue life. It gets amplified by the fact that the alternating stresses can be quite a bit higher than one would expect at any other operating point. Take a look at a basic SN diagram to get an idea about this.



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