저온조건에서의 초탄성재료 물성 추정에 관한 연구

Abstract

Hyperelastic materials are used in various fields such as machinery, civil engineering and marine & offshore plants industries due to excellent vibration damping ability, energy absorption capacity and low noise characteristics. The behavior of the hyperelastic material is described using the strain energy density function and there are various nonlinear material models to express it. In general, for the analysis of hyperelastic materials, the material properties test is required to derive the coefficients of the nonlinear material model. In particular, the properties of hyperelastic materials is changed according to temperature, unlike ordinary steels. Therefore, in order to consider various temperature conditions, it is necessary to carry out the same number of tests as the number of conditions. In this study, tensile test was performed for four temperature conditions to analyse the behavior of hyperelastic material under low temperature condition. An algorithm for estimating properties of hyperelastic materials at specific temperatures was developed and verified.