排序方式: 共有6条查询结果,搜索用时 15 毫秒
1
1.
殷有泉;蔡永恩;郑顾团;祝景忠;续春荣 《力学与实践》1989,11(6):14-17
本文用有限元方法模拟了用深地层注浆固化方法处理核废液的过程,给出了岩体应力场的变化和地表隆起情况,为注浆方案的设计提供了一些依据. ... 相似文献
2.
A scheme in Fig. l is used to simulate the earthquake sequence in North China in the last 700 years. With a postulated fault system, a mechanical parameter distribution and suitable boundary tractions, the stress field is computed by finite element method in plane strain. The fault zones are treated as elastic-perfectly plastic medium which flows according to Coulomb's criterion and its associated flow rule. An earthquake is simulated by lowering the static coefficient of friction to a kinetic one at the epicenter to cause a slip there and arrived at a new equilibrium position. The differences in displacement, stress, etc. before and after the lowering are considered to be due to the earthquake and compared to observations. After adjustments of parameters and boundary tractions, the results are satisfactorily compared with the major earthquake sequence of 14 events M_s≥7 and regions of seismic risk in the last 700 years. Possible localities of future earthquake risk after the Tangshan earthquake and ef 相似文献
3.
爆炸冲击波作用下高层建筑基础与地基间的滑移与翘离 总被引:4,自引:0,他引:4
本文采用能反映基础与地基间接触面力学特性的弹塑性薄层有限连接单元与二维有限元相结合的方法,探讨了高层建筑在爆炸空气波作用下的动力反应,着重研究了基础与地基间产生的滑移与翘离效应。还探讨了有限元边界条件,结沟、基础与地基材料等因素对结构的动力反应、基础与地基间的滑移与翘离效应的影响。 相似文献
4.
求解接触问题的一种新的实验误差法 总被引:1,自引:0,他引:1
提出了一种带松弛因子的UZAW算法求解实验误差法中给定状态下的位移和接触力满足的等式方程,并证明了该算法是R超线性收敛的。整个区域被划分为多个子区域,不同子区域位移场的求解是独立的。还提出了一种带参数的以不完全因子分解为基础的预条件子共轭梯度法求解不同子区域位移场,该算法在块体规模较大时更加有效。 相似文献
5.
6.
1