摘要
根据热弹性理论将冰劈效应转化为冰劈荷载,并基于扩展有限元方法(XFEM),采用ABAQUS有限元分析软件建立半无限板模型,求解裂缝在冰劈效应下的应力强度因子,同时通过公式计算其应力强度因子的理论解,将两者进行了对比分析,采用不同的积分区域因子rk,通过J积分算法求解不同深度裂缝应力强度因子,得到rk取值范围,通过调整网格加密系数,研究了裂缝区域网格加密对于应力强度因子的影响。
The paper converts frost-splitting effect into frost-splitting load according to thermal-magnetoelasticity, establishes semi-infinite model by applying ABAQUS finite element analysis software according to XFEM. The cracking stress-intensity factors are solved under frost-splitting effect. Simultaneously, it calculates theoretical stress-intensity factors with calculation, and makes a comparison. And then, it adopts different integral area factorrk, solves various-depth cracking stress-intensity factors by J integral computation method, obtains rkaluing scope. Through adjusting grid coefficients encryption, it studies the impact of grid coefficients encryption within cracking area upon stress-intensity factors.
出处
《山西建筑》
2015年第22期142-144,共3页
Shanxi Architecture
关键词
冰劈效应
扩展有限元
加密系数
应力强度因子
frost-splitting effect, extended finite element method （ XFEM）, coefficients encryption, stress-intensity factors
