Modelling of multilayer actuator layers by homogenisation technique using Digimat software
Source abstract
Abstract
Abstract This paper is concerned with the microstructure of adhesive joints composed of BaTiO 3 ceramic material and two kinds of adhesives, with a special emphasis on the numerical modelling of grain size, shape and material porosity. BaTiO 3 powder for use in stacked-disk multilayer actuator production is manufactured using the solid-state technique. The properties of BaTiO 3 material at each stage of its fabrication that influence its application for the stacked-disk multilayer actuator are presented and discussed. The parameters characterising the properties of the fabricated pellets are also described. Implicit time-discretisation and consistent tangent operators are employed. A 3D microstructure model of BaTiO 3 using Digimat-FE software is generated. Then, effective elastic constants of BaTiO 3 and epoxy adhesive composites are calculated by numerical simulation. The Mori-Tanaka homogenisation scheme for representative volume elements of BaTiO 3 and epoxy adhesives composites is carried out using Digimat-MF software in order to obtain failure characteristics of the composite material.
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Research context
OpenAlex topics: Composite Material Mechanics · Advanced Mathematical Modeling in Engineering · Innovations in Concrete and Construction Materials
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