Dynamic Explicit Analysis Method for Roll Bending Forming of Integrally Stiffened Panel with Rubber Filler

Dynamic explicit FEM for roll bending of integrally stiffened panel with rubber filler is studied.In order to evaluate dynamic effect of dynamic explicit method for quasi-static problem,the ratio of kinematic energy to internal energy is introduced as dynamic effect error,and a criterion of virtual loading velocity selection is proposed.Dynamic explicit FEM model for roll bending of integrally stiffened panel with rubber filler is established,and then stress and strain of panel and rubber filler are analyzed.Finally,dynamic explicit method is verified by static implicit method.This paper provides an effective analysis method for design and optimization of structural parameters and forming process parameters,and failure evaluation in forming.