摘要
工程结构构件内裂纹的扩展会受到构件孔隙的影响,孔隙不仅会使裂纹的扩展方向发生改变,还具有限制裂纹生长的能力。因此,研究孔隙对裂纹扩展的影响意义重大。基于ABAQUS有限元分析软件,运用扩展有限元法建立含有椭圆形孔隙的平板,通过改变裂纹与椭圆形孔隙之间的距离,分析平板内裂纹与孔隙间的距离对裂纹扩展的影响。研究结果表明,裂纹与孔隙之间的距离不同会对裂纹扩展产生不同程度的影响。
The propagation of cracks in engineering structural members will be affected by the pores of the members,which will not only change the propagation direction of cracks,but also have the ability to limit the growth of cracks.Therefore,it is of great significance to study the influence of pores on crack propagation.Based on ABAQUS finite element analysis software,the extended finite element method was used to establish a plate with elliptic pores.By changing the distance between cracks and elliptic pores,the influence of the distance between cracks and pores in the plate on crack growth was analyzed.The results show that the distance between the crack and the pore has different influence on the crack propagation.
作者
赵雪薇
尹大刚
ZHAO Xue-wei;YIN Da-gang(College of Architecture and Civil Engineering,Liaocheng University,Liaocheng 252059,China)
出处
《价值工程》
2020年第13期166-167,共2页
Value Engineering
基金
聊城大学大学生创新创业训练项目,课题编号:cxcy2019y117
聊城大学博士科研启动项目,项目编号:318051617
山东省自然科学基金项目,项目编号:ZR201807060823。
关键词
扩展有限元法
裂纹扩展
椭圆形孔隙
孔隙位置
extended finite element method
crack extension
elliptic pores
pore position
