分段计算方法在模拟爆炸应力波传播中的运用

英文篇名：An Application of Subsection Calculating Method in Simulating of Blasting Stress Wave
中文刊名：国防科技大学学报
英文刊名：Journal of National University of Defense Technology
作者：严波 ; 曾新吾
英文作者：YAN Bo1 ; ZENG Xin-wu2(1.College of Basic Education for Officers ; National Univ.of Defense Technology ; Changsha 410073 ; China ; 2.College of Opto-electric Science and Engineering ; National Univ.of Defense Technology ; Changsha 410073 ; China)
中文关键词：分段计算 ; 正确性 ; 有效性 ; 爆炸应力波 ; 数值模拟
英文关键词：subsections calculating ; correction ; efficiency ; stress waves ; numerical simulating
出版日期：2008-12-15
机构：国防科技大学指挥军官基础教育学院;国防科技大学光电科学与工程学院;
年：2008
期：06
出版单位：国防科技大学学报

摘要

针对爆炸加载下岩石响应的不同特点以及动力有限元和传统地震波模拟方法的局限性,提出了一种分段计算的数值模拟方法。该方法在空间上将所模拟的区域划分为非弹性段和弹性段,非弹性段内采用动力有限元计算方法,弹性段内采用传统的地震波方法,不同段之间以节点位移为边界条件。不同算法的数值模拟结果验证了分段计算方法用于模拟爆炸荷载产生地震波的有效性和正确性。
A subsection calculating numerical simulating method is presented,based on the different dynamic responses of rock under blasting and the different limitations of dynamic finite element algorithms and traditional numerical simulating algorithms of seismic wave.The subsection calculating method divides the simulating region into an elastic region in which dynamic finite element algorithms are applied and an inelastic region in which traditional numerical simulating algorithms are applied while displacement is applied to the boundary conditions between different regions.The numerical simulating results indicate that the subsection calculating method is correct and effective in numerical simulations of seismic wave in rock under blasting.

引文

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