User login

Navigation

You are here

mesh dependence of continuum damage mechanics approach

Hello Everyone,

I am a beginner in FEA of composites under impact in commercial explicit code Pam Crash.I want to know why the behaviour of composite plies with CDM approach show mesh dependency?Or a more general question for me is that what makes the FE simulation of a material with strain softening behavior mesh dependence(If this conclusion is right)? Does it make any difference with regard to mesh dependency if one uses implicit codes??

Thanks

Setareh 

 

Comments

I have found some info with this regard,I will put it here in case it might turn in useful for others:

"mesh sensitivity of strain-softening materials is due to the local loss of ellipticity,or,equivalently,loss of hyperbolicity for dynamic loadings.Since the underlying reason is of a mathematical rather than of a numerical nature,the sensitivity to discretization occurs for any discretization method,including the mesh free methods."  Rene de Borst

Subscribe to Comments for "mesh dependence of continuum damage mechanics approach"

More comments

Syndicate

Subscribe to Syndicate