Simulace viskoelastického chování gumy vytištěné na 3D tiskárně

Abstract

The aim of this diploma thesis was to find a suitable constitutive model of 3D Printed Rubber. The introduction of the thesis is dedicated to the problematics of 3D printing and 3D printing technologies overview. In the next chapters, the theories needed for the description of rubber behaviour are discussed. These theories are Finite strain theory, Hyperelasticity and Viscoelasticity. In practical part, experimental measurements were performed (uniaxial tensile tests and relaxation tests). The constitutive model was found and parameters of the model were identified based on the tests. The constitutive model consists of the hyperelastic Yeoh model and the viscoelastic Prony series. At the end of the thesis, FEM simulations were performed to verify whether the found model is able to describe the behaviour of the material during the performed tests.