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Proportional Damping Coefficients for Aerospace Aluminum in Landing Gear Analysis
2

thread6-355402

Proportional Damping Coefficients for Aerospace Aluminum in Landing Gear Analysis

Proportional Damping Coefficients for Aerospace Aluminum in Landing Gear Analysis

(OP)
Hi -

How do you determine/find data on the Rayleigh Damping coefficients for an aluminum structure, specifically a skid landing gear. After assessing my simulation, it's clear that I need to include damping in my FEA model - but I do not know how to obtain the proportional damping coefficient for aluminum, if there is nay way at all. Any help or reference would be appreciated.

Is there any conventional way to obtain the damping coefficients? Is there any tabulated data available?

Thanks

RE: Proportional Damping Coefficients for Aerospace Aluminum in Landing Gear Analysis

2
What you do is take a hammer/load cell and an accelerometer and go and find a similar structure and whack one or the other with the other or the one and measure the response with the third.

Alternatively about 2% if welded, 5% if bolted. YMMV.

Cheers

Greg Locock


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RE: Proportional Damping Coefficients for Aerospace Aluminum in Landing Gear Analysis

Beating things with hammers is good..... ;)

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