door dent FEA.....

[gregf84]

Hello,
I am trying to simulate the denting of a car door using the LS-Dyna solver and the implicit method or the explicit method. This denting is a low load small displacement type of event (quasi-static). This is to find the weakest spot on a door outer panel. Any references which specify the process would be greatly appreciated. Also, any individual advice would be very helpful too.

Greg.........

 

[rstupplebeen]

It's been a long time since I've used LS-Dyna so I'll leave that part of the question to others.

To determine the weakest spot on a door panel I would employ optimization techniques. Allow the optimization to modify the indenter location to maximize or minimise the objective function. Your opbjective function could be: minimize load for onset of placiticty, maximize placicity with a given load, maximize residual deformation after load is removed.

What optimization strategy you should choose will be highly dependent on how continuous your design space is.

I hope this helps.

Thank you.

Rob Stupplebeen
OptimalDevice.com
My Personal WP