Q690高强度结构钢材损伤变量研究

英文篇名：Research on Damage Index of High Strength Steel Q690
中文刊名：佳木斯大学学报(自然科学版)
英文刊名：Journal of Jiamusi University(Natural Science Edition)
作者：孙旭 ; 李国强
英文作者：SUN Xu1 ; LI Guo-qiang2(1.College of Civil Engineering ; Tongji University ; Shanghai 200092 ; China ; 2.State Key Laboratory for Disaster Reduction in Civil Engineering ; Tongji University ; Shanghai 200092 ; China)
中文关键词：Q690 ; 高强钢 ; 低周反复加载 ; 损伤变量
英文关键词：Q690 ; high strength steel ; low-cycle cyclic loading ; damage index
出版日期：2013-03-15
机构：同济大学土木工程学院;同济大学土木工程防灾国家重点实验室;
年：2013
期：02
出版单位：佳木斯大学学报(自然科学版)

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 damage index model was modified with the suggested weighting coefficient β.This provides the basis for further research on high strength steel Q690.

引文

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