| 费文平,陈胜宏.水工结构的三维p型弹粘塑性自适应有限单元法[J].水利学报,2003,34(3):0087-0092 |
| 水工结构的三维p型弹粘塑性自适应有限单元法 |
| 3-D p-version elasto viscoplastic adaptive FEM model for hydraulic structures |
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| DOI： |
| 中文关键词: 升阶谱有限元 p型有限元 弹粘塑性 自适应 |
| 英文关键词: hierarchical FEM p version FEM elasto viscoplasticity adaptivity |
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| 摘要点击次数: 1537 |
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| 中文摘要: |
| 建立了三维p型弹粘塑性有限单元法的数 学模型，提出了其求解水工结构问题的自适应策略，编制了相应的计算程序，给出了具体算 例，计算结果表明三维p型弹粘塑性有限单元法，不仅计算精度高、收敛速度快，而且 具有升阶过程的可承袭性和网格剖分的简易性等优点，较易实现自适应过程，适合于求解大 型的水工结构非线性分析问题。 |
| 英文摘要: |
| The authors proposed a mathematic model of 3 D p version elasto viscoplastic finite element method (FEM) and put forward an adaptive strategy for solving hydraulic structure problems. The corresponding p version adaptive FEM program was implemented and a gravity dam was calculated. The result shows that p version adaptive FEM proposed is a feasible and reliable structure analyzing tool with high quality and rapid convergence. By this method, a precise finite element mesh is unnecessary and the previous results can be inherited. With the convenient adaptive process, this method is very suitable for nonlinear analysis of complex hydraulic structures. |
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