Taylor 충격시험을 통한 고무기 재료의 동적 점탄성물성의 동정

The understanding of the deformation behavior of rubber materials under high loading-rate conditions will be important considering in their impact-resistant applications such as protective shields and transparent armor. Recently we have been investigated the dynamic deformation behavior of rubber materials including viscoelastic during Taylor impact tests incorporated with high-speed photography system. Through the experiment, it was possible to depict the overall deformation behavior, but it is difficult to determine specifically the viscoelastic properties. The objective of this study is to couple the numerical simulation process to identify the dynamic viscoelastic properties based on the experimental. Experimentally obtained data was compared with ones obtained AUTODYN-2D simulation. Through the numerical simulation, the behavior at higher impact velocity can be predicted. Also, it was made possible to understand the dynamic behavior of rubber materials during impact.