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爆轰荷载作用下球空腔热流固耦合动力响应
  • 期刊名称:岩土力学
  • 时间:0
  • 页码:918-924
  • 分类:O347.2[理学—固体力学;理学—力学]
  • 作者机构:[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
  • 相关基金:国家自然科学基金项目资助(No.40902089):浙江省科技计划项目资助(No.2008C31030).
  • 相关项目:基于温度加载历史软粘土地层多物理场耦合模型研究
中文摘要:

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。

英文摘要:

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.

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