RUM2021 RUM2021-EuroCentral CustomerPresentation
Abstract:
Some polymer parts are injected from polymer matrix mixed with glass fibers to improve stiffness and other mechanical properties. Therefore, the injected parts show direction dependent material properties based on fiber local orientation and concentration. In our approach fiber orientations and fiber concentrations are mapped from injection molding simulation to a structural model. Goal is to calibrate anisotropic material model based on tools already present in FE solvers so once a material model is calibrated no license or user subroutines are needed to use this material card. The procedure is based on Mean-field homogenization approach which is a semi-analytical homogenization approach to predict thermal and mechanical properties covering elasticity, plasticity, viscoelasticity and damage, i.e. general enough to be used in large range of contemporary simulations. Our current solution consists from two tools: 1) Mapper; 2) Calibrator. The mapper is a plugin for Ansa (Beta CAE) pre-processor and the calibrator is a Python program with rich GUI interface for semi-automatic anisotropic material model calibration based on material coupon tests. Current solution is limited to Abaqus solver, but the idea is to extend the solution to PAMCRASH and LS-DYNA.
Speaker Info:
Tomas Bouda's interest in material modeling and simulations started during his Master thesis time at Czech Technical University in Prague in 2006. This interest grown even further into theme for PhD thesis which he devoted to material modeling and testing of UHMWPE. All his professional carrier has been connected to SIMULIA products as he started to use Abaqus during research time at University and continued with other products from Established group (Isight and Tosca) when he joined Idiada in 2014. His responsibility at Idiada is immersed mostly in rubber and thermoplastic material modeling, material calibrations and optimizations in general.
