摘要
提出构造奇异单元的一种新方法,引入8节点四边形单元,通过退化为6节点三角形单元,从而构造出表达裂纹尖端的奇异性的奇异元;给出了应用ANSYS计算应力强度因子的具体实施步骤,计算结果与理论值进行对比,表明该方法的可行性与可靠性.
A new method to form singular element was discussed.A 8-node quadrilateral isoparametric element was introduced while(degenerating) to 6-node triangular element to fit the singularity on the crack tip.The calculation process of stress intensity factor on ANSYS was given,the result of which was comparied to the theoretical value,illustrating the feasibility and the reliability of FEM.
出处
《内蒙古科技大学学报》
CAS
2006年第3期303-306,共4页
Journal of Inner Mongolia University of Science and Technology
关键词
奇异单元
应力强度因子
有限元法
裂纹尖端场
singular element
stress intensity factor
finite element method
crack tip field
