effect of mass on vibration response
effect of mass on vibration response
(OP)
If I have 2 installations on a helicopter floor, similar natural frequencies but 1 weighs 5 kg the other 500 kg, would the response of each to the same random vibration input (PSD) be the same ??





RE: effect of mass on vibration response
No, in practice, as the input PSD would change usually.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: effect of mass on vibration response
RE: effect of mass on vibration response
Tobalcane
"If you avoid failure, you also avoid success."
RE: effect of mass on vibration response
Nonetheless, MIL-STD-810 and MIL-E-5400 use envelope curves that encompass any installation location on any of the helicopters covered by the specs.
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: effect of mass on vibration response
RE: effect of mass on vibration response
Tobalcane
"If you avoid failure, you also avoid success."
RE: effect of mass on vibration response
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: effect of mass on vibration response
This does not apply on a test rig type qualification test of course.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?