基于多边形比例边界有限元的 复合材料裂纹扩展模拟

施明光; 徐艳杰; 钟红; 张楚汉

doi:10.6052/j.issn.1000-4750.2013.01.0027

基于多边形比例边界有限元的复合材料裂纹扩展模拟

1.
清华大学水沙科学与水利水电工程国家重点实验室,北京 100084;
2.
大连理工大学海岸和近海工程国家重点实验室,大连116024;
3.
新南威尔士大学土木与环境工程系,新南威尔士州悉尼 2052

基金项目: 国家自然科学基金项目(40974063,41274106,51009019),水沙科学与水利水电工程国家重点实验室科研课题项目(2011-KY-3)

详细信息

作者简介:
施明光(1984―),男,福建福州人,博士生,从事断裂力学研究(E-mail:smg07@mails.tsinghua.edu.cn)；钟红(1981―),女,湖南湘乡人,讲师,博士,从事混凝土结构静动力分析研究(E-mail:hzhong@dlut.edu.cn)；EanTatOoi(1979―),男,马来西亚人,高级讲师,博士后,从事数值模拟和断裂力学研究(E-mail:e.ooi@unsw.edu.au)；张楚汉(1933―),男,广东梅州人,教授,硕士,中科院院士,从事水利工程研究(E-mail:zch-dhh@tsinghua.edu.cn).

通讯作者:
徐艳杰(1970―),女(满),辽宁义县人,副教授,博士,从事水工结构研究(E-mail:xuyanjie@tsinghua.edu.cn).

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出版历程
- 收稿日期: 2013-01-10
- 修回日期: 2014-02-27
- 刊出日期: 2014-07-24

MODELLING OF CRACK PROPAGATION FOR COMPOSITE MATERIALS BASED ON POLYGON SCALED BOUNDARY FINITE ELEMENTS

1.
State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;
2.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;
3.
School of Civil and Environmental Engineering, University of New South Wales, Sydney NSW 2052, Australia

摘要

摘要: 该文采用近年提出的多边形比例边界有限元(Polygon Scaled Boundary Finite Elements, PSBFE),结合基于拓扑的局部网格重剖分方法,首次模拟了层状复合材料交界面、不同弹性模量的圆形夹杂对复合材料裂纹扩展的影响。结果表明,该文方法可以有效模拟复合材料的裂纹扩展,算例的结果同现有文献的实验数据和数值模拟结果吻合良好,采用不同网格密度和不同裂纹扩展步长对计算结果影响不大。基于SBFEM的PSBFE可以半解析求解裂纹尖端应力奇异性,具有比FEM更高的精度。另一方面,同现有基于SBFEM的裂纹扩展方法相比,基于拓扑的局部网格重剖分的PSBFE可以处理任意复杂的二维模型,具有更好的通用性。
- 断裂力学 /
- 裂纹扩展 /
- 比例边界有限元 /
- 网格重剖分 /
- 应力强度因子
Abstract: The newly developed Polygon Scaled Boundary Finite Elements (PSBFE) combining with topography-based local remeshing technique is, for the first time, applied to the fracture analysis of composite materials. Near-interfacial crack propagation in a layered metal-ceramic structure is simulated and the effects of elastic constants mismatch on the interaction between a propagating crack and a single inclusion in brittle matrix materials are presented. The agreement between the simulating result, experimental and other numerical data available in literatures demonstrates a good validity and accuracy of the proposed method in predicting the crack-growth of composite material. The parametric study on the effect of mesh density and effect of different increments of crack propagation leads to the consistent results. This technique can represent the singular stress field at a crack tip more precisely than FEM. Meanwhile, it is more robust and universal than current crack growth simulation methods based on SBFEM.
- fracture mechanics /
- crack propagation /
- scaled boundary finite element /
- remeshing /
- stress intensity factor

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参考文献(24)

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文章访问数: 395
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基于多边形比例边界有限元的 复合材料裂纹扩展模拟

通讯作者: 徐艳杰(1970―),女(满),辽宁义县人,副教授,博士,从事水工结构研究(E-mail:xuyanjie@tsinghua.edu.cn).

计量

出版历程

MODELLING OF CRACK PROPAGATION FOR COMPOSITE MATERIALS BASED ON POLYGON SCALED BOUNDARY FINITE ELEMENTS

计量

出版历程

目录

基于多边形比例边界有限元的复合材料裂纹扩展模拟

通讯作者:
徐艳杰(1970―),女(满),辽宁义县人,副教授,博士,从事水工结构研究(E-mail:xuyanjie@tsinghua.edu.cn).