Dynamic impact analysis on FEA
Dynamic impact analysis on FEA
(OP)
I have the mass of a polar bear 599kg and its speed in the water = 3.13 m/sec. The bear impacts a vertical FE model (panel). Is there an equivalent force method to input into RISA? Thanks for any help!





RE: Dynamic impact analysis on FEA
I would think that one would start with that value, and then make some assumptions about what part of the polar bear actually impacts with the wall; can't imagine a polar bear that dumb, but...
So, now you have an area, a mass, and a deceleration.
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RE: Dynamic impact analysis on FEA
RE: Dynamic impact analysis on FEA
Basically, deceleration length = deformation and than you have deceleration / acceleration required to stop the bear. Than you know that acceleration * mass = Force.
And than its a static analysis. If you use the bears mass and multiply by 2 you get a conservative estimate for impact. You can probably find that in any decent dynamics book.
But I would like to see the polar bear on a jet ski.
Regards
Thomas
RE: Dynamic impact analysis on FEA
RE: Dynamic impact analysis on FEA
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