Simulation of Welding Thermal Stress and Strain In Tube Forming Parts and Stamping Parts Using Accelerated Explicit FEM and GPU

摘要

An accelerated explicit finite element method with parallel computation using GPU was developed for both static thermal-mechanical phenomena and ultra large scale models with more than 1000 million degrees of freedom combined.The accuracy of the accelerated explicit method on prediction of welding stress and strain was verified comparing the results with those computed by conventional implicit FEM.A good performance of the parallel computation using GPU was demonstrated.Then the welding thermal stress and thermal strain in an engine cradle with tube hydro forming parts and stamping parts were analyzed.Then the welding thermal stress and thermal strain in an engine cradle with tube hydro forming parts and stamping parts were analyzed.