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.

本文考虑了多层执行器微观结构建模的实验和数值研究。使用固态技术制造BaTiO ₃粉末。影响在执行器上使用BaTiO ₃陶瓷的可能性的主要参数是烧结材料的晶粒尺寸。考虑了三种平均粒径不同的颗粒。利用BaTiO ₃和Ag基导电环氧树脂胶的胶接点建立了执行器模型。BaTiO _3的3D微结构模型使用Digimat-FE软件生成复合材料。为了获得复合材料的破坏特性，使用Digimat-MF软件对多层执行器的代表性体积元素进行了Mori-Tanaka和双重夹杂物均质化模型。为了研究陶瓷基复合材料的失效，使用了Hashin-Rotem准则。