3D microstructure-based modelling of the deformation behaviour of ceramic matrix composites

In this paper the experimental and numerical investigations of microstructure modelling of multilayer actuator are considered. BaTiO3 powder is manufactured using the solid-state technique. The main parameter influencing the possibility of application of BaTiO3 ceramics on actuators is the grain size of the sintered materials. Three kinds of pellets with different average grain sizes were considered. The adhesive joints of a BaTiO3 and Ag-based conducting electric current epoxy adhesive were used to fabricate the model of actuator. A 3D microstructure model of BaTiO3 and composites were generated using Digimat-FE software. The Mori-Tanaka and double inclusion homogenization models for representative volume elements of multilayer actuator were carried out using Digimat-MF software, in order to obtain the failure characteristics of the composite material. To investigate the failure of the ceramic matrix composite the Hashin-Rotem criterion was used.