摘要
本文使用设置粘性边界单元的有限元方法,分析了简谐集中激振力产生的地表位移反应,刚性基础及桩基础的阻抗函数等半无限地基中的动力问题。计算结果与其他数值分析方法结果的比较表明,粘性边界单元的有限元方法适用于分析弹性半无限地基中的动力问题。本文还讨论了有限元网格尺寸及模型大小对计算结果的影响。
Using FEM with viscous boundary element , several dynamic analysis of elastic half space problems were studied. The surface displacement response under the action of dynamic point load, the impendence function of rigid foundations both of surface and buried, and the impendence function of pile foundation were analyzed. The results were compared with that obtained by other numerical methods. The study shows that FEM with viscous boundary element is fit well for dynamic analysis of elastic half space problems. Lastly, the element dimension and the model size were also studied.
出处
《力学季刊》
CSCD
北大核心
2004年第4期535-540,共6页
Chinese Quarterly of Mechanics
基金
上海市建设技术发展基金资助课题(A0006106)
关键词
有限元
粘性边界
弹性半无限地基
动力分析
阻抗函数
finite element method(FEM)
viscous boundary
elastic half space
dynamic analysis
impendence function
