Abstract: New sttess intensity factor expressions for two kinds of cracked strips biasly loaded by point forces areobtained uatns the crack-line stress field method for analysing stressin tensity factors of finite-width strips.The resuit for the centrally cracked strip compares well with the result from the popular handbook, while thatfor the eccentrically cracked strip constitutes a supplemental solution for the handbook.?

Key words: stress intensity factor, mode-I crack, crack-line stress field method, cracked strips biasly loadedby point forces

摘要： 本文用求解有限宽板应力强度因子的裂纹线应力场方法,求出了两种集中力偏置加载裂纹板应力强度因子的新表达式．对中心裂纹板所得到的部分结果与常用手册值吻合较好；对偏心裂纹板所得结果是对手册的补充解．

关键词: 应力强度因子, I型裂纹, 裂纹线应力场方法, 集中力偏置加载裂纹板