【摘要】 运用多刚体系统动力学及接触冲击理论建立了节理岩体弹塑性动态本构模型。基于DYNA－2D程序原理及其框架，利用所建模型，模拟了节理岩体的爆破过程，量化了节理岩体在爆炸载荷作用下不同时刻的应力场。更多还原

【Abstract】 In this paper, a elastic-plastic dynamical constitutive model on jointed rock masses under blasting load is established with the help of the multiple rigid-body dynamics and contact-impact theory. On the basis of foe theory and foe structure of DYNA2D, and the abcve-mentioned model, numerical simulation is conducted and contours of stress in the different moments arc obtained in Jointed rock masses under blasting load.更多还原