【摘要】 提出塑性损伤变量的定义，它由反映微空隙群的材料相对体积膨胀来表征．从理论上导出了塑性损伤变量Ｄｐ 与经典连续损伤力学中弹性损伤变量Ｄｅ＝ １－ Ｅ／Ｅ 之间的关系．根据此关系，用实验方法确定了聚合物材料ＨＩＰＳ在纵向拉伸过程中损伤变量的扩展更多还原

【Abstract】 A new plastic damage variable is proposed, which is characterized by relative volume expansion reflecting micro voids in material. The relationship between the plastic damage variable D p and the elastic damage one D e= 1-/E , by classical Continuum Damage Mechanics, is derived. The basis of this relation, the propagation of damage variable in longitudinal tensile process for polymer material HIPS is determined using experimental technique.更多还原