| 有限元法及边界元法应用于复合粘塑性多孔材料模拟 |
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| 引用本文： | 吴宇清,姚振汉. 有限元法及边界元法应用于复合粘塑性多孔材料模拟[J]. 燕山大学学报, 2004, 28(2): 125-128 |
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| 作者姓名： | 吴宇清 姚振汉 |
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| 作者单位： | 清华大学工程力学系,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目(No.10172053)。 |
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| 摘 要： | 罚有限元法被推导及应用于复合粘塑性多孔材料的压缩模拟。其中以平均应力为拉格朗日乘子来分析多相材料的压缩。同时，多域边界元法也从细观力学的角度被用来探索这种不连续系统的平面应变问题。给出了算例来对这两个数值模型作比较。研究结果可以应用在若干不同的领域，例如材料科学，石油产业，化学工程，土壤力学，以及生物力学等等。
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| 关 键 词： | 有限元 边界元 复合材料 粘塑性 多孔材料 颗粒结构 |
| 修稿时间： | 2003-05-10 |
FEM and BEM for Composite Viscoplastic Porous Media |
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| WuYuqing Yao Zhenhan. FEM and BEM for Composite Viscoplastic Porous Media[J]. Journal of Yanshan University, 2004, 28(2): 125-128 |
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| Authors: | WuYuqing Yao Zhenhan |
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| Abstract: | A penalty finite element method in which the mean stress is used as Lagrange multiplier is developed to simulate the compaction of multiphase aggregates. In the point of view of meso- mechanics, the multi-zone boundary element method is used to analyze the behavior of the discontinuous system. Numerical examples are given to make comparison between the two numerical models. Results of the study may be applied to many branches of engineering and sciences such as material science, the petroleum industry, chemical engineering, soil mechanics, and biomechanics. |
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| Keywords: | BEM FEM composite material viscous porous media granular system. |
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