Excessive distortion of continuum shell elements
Excessive distortion of continuum shell elements
(OP)
I'm modeling FRP strengthened steel tubes under impact loading. I have used continuum shell elements as FRP composites and cohesive elements as epoxy adhesive. However, I'm getting error due to excessive distortion of continuum shell element away from the impact zone. Please find the attached picture to see the distorted element. I can not understand why elements are distorting away from the impact zone. The mesh size in impact zone is around 5*10 and 25*10 in away from impact zone.





RE: Excessive distortion of continuum shell elements
RE: Excessive distortion of continuum shell elements
Thanks a lot.
RE: Excessive distortion of continuum shell elements
Another option maybe mass scaling if hourglass control has no effect.
RE: Excessive distortion of continuum shell elements
RE: Excessive distortion of continuum shell elements
One more thing, Once I'm starting mass scaling of continuum shell element, no element of continuum shell part is failing or removing from the model. without mass scaling continuum shell elements were failed/removed from the model with same impact mass and velocity.
Many Thanks.
RE: Excessive distortion of continuum shell elements
When running an explicit analysis, the only time you need to make sure kinetic energies remain small compared to internal energy is when you are running a quasistatic analysis.