采用改进的RDCDMC模拟花岗岩非弹性区爆炸应力波传播  

SIMULATION OF PROPAGATION OF EXPLOSIVE STRESS WAVE IN INELASTIC REGION OF GRANITE BY IMPROVED RDCDMC

作　　者：严波[1] 曾新吾[2] 蔡清裕[2] 

机构地区：[1]国防科技大学指挥军官基础教育学院,湖南长沙410073 [2]国防科技大学光电科学与工程学院,湖南长沙410073

出　　处：《岩石力学与工程学报》2009年第A02期3447-3451,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(40574056)

摘　　要：针对爆炸加载下花岗岩表现出不同于混凝土的特点,对RDCDMC岩石本构模型中的状态方程进行改进;考虑塑性体积变形对拉伸状态定义的影响并采用主应力拉伸失效准则。微装药填实爆炸应力波的数值模拟结果验证改进的RDCDMC能表征非弹性区花岗岩的响应特点,能用于应力波传播的模拟。Based on the properties of rock different from concrete under blasting loads,the state equation of RDCDMC is improved.The volumetric deformation of plasticity is taken into account in the definition of tension and the tension-failure rule is adopted.The results of numerical simulations for explosion-induced wave by tamped mili-explosive charge indicate that the improved model is capable of describing the response of the inelastic region of granite and available in numerical simulations on propagation of stress wave.

关 键 词：爆炸力学 本构模型 应力波 数值模拟 

分 类 号：O382.2[理学—流体力学]