不同介质中集团装药爆炸混凝土冲击响应的数值模拟NUMERICAL SIMULATION OF DYNAMIC RESPONSE FOR CONCRETE UNDER GROUP CHARGE EXPLOSION IN DIFFERENT MEDIUMS
王林,胡秀章,李永池
WANG Lin,HU Xiu-zhang,LI Yong-chi(Department of Mordern Mechanics
摘要(Abstract)：
基于非线性有限元软件ANSYS/LS-DYNA,选用Holmquist-Johnson-Cook损伤本构模型,对不同介质中集团装药爆炸下混凝土的动态响应进行了数值模拟,研究了装药在不同介质中爆炸对混凝土的冲击响应和爆炸波在混凝土内的传播与衰减规律。结果表明,介质对混凝土内应力场、压力场、损伤和速度场的分布与衰减有着十分明显的影响。
Non-linear finite element software LS-DYNA and the Holmquist-Johnson-Cook damage constitutive model were employed to study the dynamic response of concrete under the non-contact explosion of group charge in three different mediums in order to reveal the propagation and attenuation law of blasting wave.The results showed that there was a strong relationship between the mediums and the distribution of stress,pressure,damage and velocity in concrete.
关键词(KeyWords)：
不同介质;集团装药;非接触爆炸;混凝土;数值模拟
Different mediums;Group charge;Non-contact explosion;Concrete;Numerical simulation
基金项目(Foundation): 国家自然科学基金(10632080,50802092)资助
作者(Author):
王林,胡秀章,李永池
WANG Lin,HU Xiu-zhang,LI Yong-chi(Department of Mordern Mechanics
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