Simple Harmonic Motion for Isolated Assembly

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1

Description


This calculator assumes that the user has picked a candidate vibration isolator and wishes to verify its function with the assembly to be isolated. In the design of assemblies isolated from vibration, the isolator must be matched to the body in terms of natural or resonant frequency. More accurately, the natural frequencies must be MIS-matched, ideally by a factor greater than √2. (The assembly's resonance should be approximately 40% greater --or more-- than the isolator resonance.) Often the natural frequency and spring rate of an isolator candidate is given by the manufacturer and the natural frequency of the system must be calculated. Assuming that the assembly is simple enough that it can be modeled as a lump mass (or rigid rotational body) in "simple harmonic motion," these equations will calculate the system's natural frequency.

Calculation Reference
Steinberg, Preventing Thermal Cycling and Vibration Failures in Electronic Equipment
Dynamics
Harmonic Motion

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Submitted On:
02 Jan 2009
File Size:
145.00 Kb
Downloads:
121
File Version:
1.0
File Author:
Jason B Mansfield Sr
Rating:
1

 
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Comments: 1
AB9BI 12 years ago
ab9bi to show our appreciation you have been awarded a free XLC Pro subscription for the next 12 months. I sent an email to tell you this but I received a delivery error message using your registered email address. The release code can only be sent to your registered email address so perhaps you would like to look into this. Thanks again your contribution is much appreciated.