15 - Virtual identification of macroscopic material laws from lower scales

Abstract

A general sequential multiscale framework has been used to identify the macroscopic material laws from lower scales. Specifically, the material parameters of a mesoscale model have been identified using virtual mechanical tests at the microscale. Normally, the parameters of the mesoscale models are determined via experiments for each laminate which increases costs and production time. The virtual mechanical tests based on the realistic geometry, detailed material models, and specific load conditions can reproduce the macroscopic stress–strain behavior replacing the experimental tests. Then, the identification of the material properties is obtained from these simulations. Finally, the approach has been verified and numerically validated. In conclusion, the virtual identification can replace several experiments in the design and production of new composite structures saving costs and time.