求解裂纹扩展参数的最简回归  

The Simplest Regression to Calculate the Parameters of Crack Growth

作　　者：李有堂[1] 赵学才[1] 郑双丽[1] 

机构地区：[1]兰州理工大学机电工程学院,甘肃兰州730050

出　　处：《甘肃科学学报》2007年第4期129-131,共3页Journal of Gansu Sciences

基　　金：甘肃省自然科学基金(3ZS061-A25-47)

摘　　要：裂纹扩展的过程受到诸多因素的影响,并且裂纹扩展变量与其影响因素之间存在着相关关系,因而可以通过回归分析寻找它们之间的数学描述.文中探讨了裂纹扩展参数的最简回归,得到了求解裂纹扩展参数的最简回归公式.该解法为实现对裂纹扩展规律的定量认识提供了理论依据.The process of crack growth is affected by many factors. There is a correlativity between crack growth variability and its influential factors. The regression analysis can be used to find the mathematical description among them. The simplest regression to calculate the parameters of crack growth is discussed here,and a formula of simplest regression is obtained. This solution has provided a theoretical foundation for us to learn the rule of crack growth quantitatively.

关 键 词：疲劳裂纹 最简回归 扩展参数 

分 类 号：TB114[理学—概率论与数理统计] O346.23[理学—数学]