摘要
灰色系统理论是解决不确定性问题的方法之一。在分析灰色系统理论的特点基础上,提出一种疲劳裂纹扩展速率的计算方法,该方法可以解决裂纹扩展速率测定试验中信息不完全对计算裂纹扩展速率造成的困难。典型数值算例证明,灰色系统计算方法计算裂纹扩展速率具有稳定性好和精度高的优势。
Gray theory is an effective method to solve uncertain problems.It is difficult to calculate the crack growth rate because that information is uncompleted in the material property test.Based on the properties of gray theory,a new computational method is proposed.This method can solve the problem caused by lack of test information.Typical numerical example proves that gray theory computational method has the advantages of good stability and high precision.
出处
《机械强度》
CAS
CSCD
北大核心
2010年第3期472-475,共4页
Journal of Mechanical Strength
