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.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
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)
关键词
爆炸力学
本构模型
应力波
数值模拟
blasting mechanics
constitutive model
stress wave
numerical simulation
