부산대학교 도서관

It is known that the dynamic behavior of polymers depends greatly on not only the strain rates but also the hydrostatic pressure, and the volume change is caused during plastic deformation. It is desirable to apply material constitutive model considering these mechanical properties in numerical simulation for polymers. It is however still not enough to prepare an easy-to-use material constitutive model considering these mechanical properties in general-purpose numerical simulation code. Therefore, we developed a new constitutive model for polymers and implemented using the user subroutine function of the impact analysis code LS-DYNA. And Mimura et al. measured the plastic Poisson’s ratio of Polycarbonate by Digital Image Correlation method.