Learning Forum

[Elaine]

I have modelled a concrete ball (solid) being dropped onto a roof tile (shell). For my equivalent elastic strain results, I get the following:

[Chris Quan]

Has the material of the roof included a failure model, such as principal stress/strain failure for brittle materials or effective plastic strain failure for ductile materials? nIs the roof material a ductile material? If yes, is plasticity (initial yield stress, plastic strain hardening) included in the roof material?nBy default, erosion is on in Analysis Settings. It looks like the element that reached the maximum elastic strain has been eroded at the later time. The erosion caused the redistribution of stress/strain in the roof material. Also check the motion of the concrete ball. It may start to rebound from the roof after the roof has reached its maximum strain.nn