저온 환경에서의 초탄성 재료의 거동 특성 분석 및 물성추정에 관한 연구

Abstract

Hyperelastic materials such as rubber are generally used in various fields for vibration damping and shock absorption due to excellent vibration damping ability, energy absorption capacity and low noise characteristics. However, The hyperelastic material has a large change in material properties depending on the influence of environmental conditions such as temperature. Therefore, it is very important to review and predict the behavior of hyperelastic materials under operating conditions for evaluation and application. In this study, material properties test of two kinds of specimens based on natural rubber was carried out at 4 temperature conditions(23℃, 0℃, -20℃, -40℃) for analysis of mechanical behavior of hyperelastic material in low temperature environment and nonlinear material model coefficient for finite element analysis are derived. In addition, an algorithm for estimating mechanical properties at a specific temperature is presented, and the algorithm is verified through comparison with experimental data.