【摘要】 针对地下爆炸波的基本特点,提出了一种适用于干岩并便于嵌入爆炸应力波数值计算的弹塑性连续损伤本构模型。该模型考虑了含孔隙和微裂纹岩石的剪胀效应和软化效应,并根据岩石不同变形阶段的特征,给出了不同的屈服面形式和损伤演化方程。地下强爆炸波的数值模拟计算结果显示,所建模型是合理的和有效的。更多还原

【Abstract】 Based on the features of underground explosion-induced wave,a new elastoplastic continuously damaged constitutive model is developed. The damage evolution equations and the yield functions for the model are established on the basis of different deformation behavior,and both the effects of distortional dilation and damage softening are also included. The results of numerical simulations for underground explosion-induced wave indicate that the proposed model in this paper is effective and available.更多还原