流体饱和两相多孔介质动力反应分析的显式有限元法

流体饱和两相多孔介质动力反应分析的显式有限元法 English Version

基金项目: 国家自然科学基金!资助项目 (59780 0 4 4 )

School of Civil Engineering and Architecture Northern Jiaotong University Beijing 100044 China

摘要: 根据Biot流体饱和两相多孔介质波动方程 ,采用解耦技术 ,提出了分析流体饱和两相多孔介质中动力反应的显式有限元法。根据所推公式 ,编制了计算程序并进行了实例计算。计算结果与解析解对比 ,两者符合非常好 ,表明本文方法是处理流体饱和两相多孔介质动力问题的一种非常有效方法。
- 流体饱和两相多孔介质 /
- 显式有限元法 /
- Biot动力方程 /
- 局部透射人工边界
Abstract: An explicit finite element method for dynamic analysis of fluid-saturated porous media is developed. The formulae for the explicit finite element method are given. By using this method, computation effort and memory space can be reduced considerably. The present method is compared with analytical methods, and the degree of accuracy is satisfactory. It is shown that the method developed in this paper is a very effective method for dynamic analysis of fluid-saturated porous media.
- fluid-saturated porous media /
- explicit finite element method /
- Biot dynamic equation /
- local transmitting artificial boundary