爆轰荷载作用下球空腔热流固耦合动力响应  

Thermo-hydro-elastodynamic response of spherical hollow chamber under explosive loading

作　　者：刘干斌[1] 郑荣跃[1] 卢正[2] 

机构地区：[1]宁波大学建筑工程与环境学院,宁波315211 [2]中国科学院武汉岩土力学研究所,武汉430071

出　　处：《岩土力学》2010年第3期918-924,共7页Rock and Soil Mechanics

基　　金：国家自然科学基金项目资助(No40902089);浙江省科技计划项目资助(No2008C31030)

摘　　要：基于饱和多孔弹性介质热流固耦合动力模型(THMD)及控制方程,研究了爆轰荷载作用下球空腔内壁面受到随时间变化热、力冲击作用下的热流固耦合动力响应。利用Laplace变换技术,对控制方程进行解耦,获得了温度、位移、孔隙水压力和应力积分形式解。采用Laplace逆变换得到数值结果,分析了热流固耦合参数的影响特性,并将热流固耦合结果与热弹性条件下的结果进行比较,以验证热流固耦合条件下结果的正确性。Based on a model of coupling thermo-hydro-mechanical dynamic response tbr a saturated poroelastic medium presented by the authors, the dynamic response of a spherical hollow chamber when subjected to a time dependent thermal/mechanical shock on the inner surface is investigated. By using Laplace transform method, the governing equation is decoupled; and the integral solutions of temperature, displacement, pore pressure and stress are derived. The numerical results are obtained by using the inverse Laplace transform method; and the results are used to analyze the influences of the coupling parameters of thermo-hydro-mechanical dynamic response. At last, the solutions are compared with those of the thermoelastic medium; and the validity of the results of the thermo-hydro-mechanical dynamic response with a spherical hollow chamber in the saturated poroelastic medium is ascertained.

关 键 词：球空腔 爆轰荷载 热流固耦合 动力响应 

分 类 号：O347.2[理学—固体力学]