文献类型：期刊文献

中文题名：应用解理断裂局部法预测任意应力—应变关系材料断裂韧度K_(IC)的新方法

英文题名：NEW METHOD OF FRACTURE TOUGHNESS K_(IC) PREDICTION FOR MATERIAL WITH ARBITRARY STRESS-STRAIN CURVE BY USING CLEAVAGE FRACTURE LOCAL APPROACH

作者：惠虎[1];李培宁[1];轩福贞[1];刘长军[1];曲家棣[2]

机构：[1]华东理工大学机械工程学院,上海200237;[2]上海核工程研究设计院,上海200233

年份：2004

卷号：40

期号：10

起止页码：165

中文期刊名：机械工程学报

外文期刊名：Journal of Mechanical Engineering

收录：CSTPCD;;EI(收录号：2004538760211);Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：核工业总公司核电通用资助项目(H6320153)

语种：中文

中文关键词：解理断裂;局部法;预测;断裂韧度

外文关键词：Cleavage fracture Local approach Prediction Fracture toughness

摘要：提出了采用解理断裂局部法模型预测任意应力—应变关系材料断裂韧度的新方法,并预测了国产A508-Ⅲ钢及16MnR钢在不同解理断裂概率时的断裂韧度,从理论上证明了对于大多数压力容器所使用的C-Mn钢,62％的解理断裂概率相对应的载荷是最有可能引起结构解理断裂的载荷,此时对应的断裂韧度值也最有可能接近材料真实的断裂韧度值。国产A508-Ⅲ钢及16MnR钢三点弯曲试样62％的解理断裂概率相对应的断裂韧度值与试验值较为接近。
A new method of fracture toughness KIC prediction for material with arbitrary stress-strain curve by using cleavage fracture local approach is proposed in this paper. The fracture toughness of civil made steel as A508-Ⅲ 16MnR at different cleavage fracture probability are predicted by using the method. To most of pressure vessel carbon-manganese steels, cleavage fracture is likely to occur at the load corresponding to 62% cleavage fracture probability. Hence, the fracture toughness corresponding to the load is the most possible fracture toughness of steels. The values of fracture toughness corresponding to 62% cleavage fracture probability is close to that of experiment.