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Bottle Crush Simulation

Bottle Crush Simulation

Bottle Crush Simulation

(OP)
I am new to the area of fea. Could some one please provide an outline of how to conduct a non linear crush analysis of a plastic bottle. I will include a link with an image of a bottle that has been simulated.

http://www.saec-kv.com/engineer.html#

Can Cosmos Works or Design Star conduct this type of simulation.

RE: Bottle Crush Simulation

don't forget your bottle will offer some symetry plans, it will make your calculations lighter.

Cosmos should be able to make it. I made fea calculations with it for an hollow plastic wheel and it worked fine.

Cyril Guichard
Mechanical Engineer

RE: Bottle Crush Simulation

pardon the ignorance, but why go through all the trouble when you can just go out and crush a bunch of them with your foot? i don't have any experience with plastic, which is why i am asking.

RE: Bottle Crush Simulation

also if you are new to the fea, why start out with one of the most complicated problems? start simple and build in complexity as you understand the problem better.

RE: Bottle Crush Simulation

(OP)
ParabolicTet & FrenchCAD, Thanx for the reply.

I work for a Blow Molding company designing new plastic bottles so I am hoping to conduct analysis before a product is made. I understand this is a very complicated type of simulation. I have been trying to work through as many tutorials as possible but I have not been able to find any tutorials related to thin walled plastic parts. Does anyone have any good links that could help me understand this type of problem.


RE: Bottle Crush Simulation

You'll need non linear geometric (ie large deflections) and non linear material properties. It also looks as though you will be getting into elastic-plastic buckling of curved plates. E-P  analysis of struts is pretty complex, never mind curved plates. I do not know if Cosmos Works or Design Star can handle either or both non linearities. I do know that for this sort of analysis we'd use LS DYNA and would have a lot of correlation data available before we'd trust the result.

Gas pressurisation of the contents would also affect the result.

In short I would only believe the results of this analysis  if a physical test program of a very similar part had already been correlated with a similar model.

 





Cheers

Greg Locock

RE: Bottle Crush Simulation

I have seen some papers on this from Proctor & Gamble (who have a strong interest in this very analysis, for obvious reasons).

Google or yahoo on '"Proctor & Gamble" FEA' and you will get a lot of hits which may help.
Brad

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