摘要
损伤变量是描述材料、构件或结构劣化程度的变量.首先对不同的损伤变量模型进行了评述,并选择适用于钢材的损伤变量模型,基于Q690高强度结构钢材低周疲劳反复加载试验的结果,对所选择的损伤变量模型进行了修正,提出了合理的权重系数β,为Q690高强钢在低周反复加载下力学性能的后续研究提供了基础.
Damage index is a variable to describe the damage situation of material, member and structure. Various damage index models were reviewed and the model suitable for steel materials was selected. Based on the result of low - cycle cyclic loading tests on high strength steel Q690, the selected fled with the suggested weighting coefficient [5. This provides the basis for further Q690. damage index model was modi- research on high strength steel
出处
《佳木斯大学学报（自然科学版）》
CAS
2013年第2期182-185,共4页
Journal of Jiamusi University：Natural Science Edition
基金
国家"十二五"科技支撑计划资助(2012BAJ13B02)
关键词
Q690
高强钢
低周反复加载
损伤变量
Q690
high strength steel
low -cycle cyclic loading
damage index
