| 比例边界单元法模拟混凝土梁混合裂缝扩展 |
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| 引用本文： | 余学芳,刘国华.比例边界单元法模拟混凝土梁混合裂缝扩展[J].中山大学学报(自然科学版),2008,47(2):23-27. |
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| 作者姓名： | 余学芳 刘国华 |
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| 作者单位： | 浙江大学建筑工程学院,浙江,杭州,310027 |
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| 摘 要： | 基于线单性断裂力学（LEFM），采用比例边界有限单元法（SBFEM）模拟了混凝土梁混合裂缝扩展。通过与非线性有限单元法（NFM）模拟结果的对比，说明了SBFEM能预测裂缝扩展轨迹，并能准确有效计算荷载位移曲线及其作用点的挠度曲线。
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| 关 键 词： | 比例边界有限单元法 应力强度因子 混合裂缝模型 线弹性断裂力学 |
| 文章编号： | 0529-6579(2008)02-0023-05 |
| 收稿时间： | 2007-09-03; |
| 修稿时间： | 2007年9月3日 |
A Numerical Analysis with Scaled Boundary Finite Element Method to Simulate Mixed-mode Crack Propagation for Concrete Beams |
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| YU Xue-fang,LIU Guo-hua.A Numerical Analysis with Scaled Boundary Finite Element Method to Simulate Mixed-mode Crack Propagation for Concrete Beams[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2008,47(2):23-27. |
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| Authors: | YU Xue-fang LIU Guo-hua |
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| Institution: | (College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310027,China) |
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| Abstract: | Based on linear elastic fracture mechanics and the scaled boundary finite element method(SBFEM),numerical simulation was performed for a mixed mode crack propagation model.From comparing the results with which obtained by the nonlinear finite element method(NFM),SBFEM can predict crack trajectories and compute lod displacement relations as well as load deflection at loading point accurately and efficiently. |
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| Keywords: | scaled boundary finite element method stress intensity factors mixed mode crack propagation model linear elastic fracture mechanics |
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