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H
hrao-21-Visitor
1-Visitor
May 3, 2017
Solved

How to measure force in dynamic Time and frequency analysis?

  • May 3, 2017
  • 1 reply
  • 2223 views

I want to measure support force in constrain surface, it's easy to get it in static analysis, but how to get it in dynamic analysis like shock simulaiton?

I checked below diagram but didn't found there is no force available , could anyone do me a favor, thanks.

mst2477g.gif

Best answer by skunks

V2:

dynamic sinus shock 50G (5% damping) / user defined:

measure_dyn_sinus.JPG

s_dyn=0,111588mm

static 1G:

measures_static_1g.JPG

s_stat=0,002175

s_dyn/s_stat=51,3

force_dy=51,3*3,611186N=185,3N

1 reply

skunks
skunks19-Tanzanite
19-Tanzanite
May 3, 2017

workaround (attached)?

measure:

dyn.JPG

then static analysis

regards

paul

H
hrao-21-VisitorAuthor
1-Visitor
May 3, 2017

Hi Paul

Thanks for your answer, now I understood the situation you mentioned. but what about below sample

I supposed this sample is fixed on shock-fixture by front two screws(x,y,z constrain) and rear support for y-direction.

And then do 50g half sine shock. so it's hard to get clear displacement as your sample. so I still don't know how to calculate the support force on rear side

Thanks for you help asdfdfsd.PNG

skunks
skunks19-TanzaniteAnswer
19-Tanzanite
May 3, 2017

V2:

dynamic sinus shock 50G (5% damping) / user defined:

measure_dyn_sinus.JPG

s_dyn=0,111588mm

static 1G:

measures_static_1g.JPG

s_stat=0,002175

s_dyn/s_stat=51,3

force_dy=51,3*3,611186N=185,3N

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