文献类型：期刊文献

中文题名：结构钢高周疲劳寿命预测的电阻模型

英文题名：Resistance model for prediction of high-cycle fatigue life on structural steel

作者：孙斌祥[1];郭乙木[2]

机构：[1]绍兴文理学院土木工程学系;[2]浙江大学力学系

年份：2003

卷号：37

期号：3

起止页码：372

中文期刊名：浙江大学学报：工学版

外文期刊名：Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science)

收录：CSTPCD、、北大核心2000、EI(收录号：2003527799554)、Scopus(收录号：2-s2.0-0346778432)、CSCD2011_2012、北大核心、CSCD

语种：中文

中文关键词：结构钢;疲劳损伤;疲劳寿命;电阻模型;损伤演化;寿命预测

外文关键词：Electric resistance;Fatigue of materials;Forecasting;Stresses

中文摘要：研究了金属材料基于电阻变化的损伤定义,它能较好地反映损伤演化过程中共同存在和相互作用的宏、细、微观效应,并且在传导电流的导电截面与承载截面等价的假设条件下,与有效截面的损伤定义等价.通过纯弯旋转高频疲劳试验,提出了基于电阻变化的常用结构钢的高周疲劳损伤累积模型,获得了相应的疲劳损伤演化律及其寿命预测公式,并对由正火45号碳钢、16Mn钢和20Mn钢三种结构钢制成的试样进行了具体测试.

外文摘要：The research on the definition of damage based on electrical resistance changes shows that it can reflect substantially the macro-meso-micro effects of interaction and concurrence in the damage evolution processes of metallic materials. Under the hypothesis of a conducting-section equivalent to a load-bearing one, it is equal to the effective section definition of damage. High frequency rotating bending fatigue tests reveal that the high-cycle fatigue damage accumulation model for structural steels is based on resistance changes. The fatigue damage evolution law and its lifetime prediction formula are obtained, respectively. Fatigue-specimens made of three common structural steels, normalized 45# carbon steel, 16 Mn steel and 20 Mn steel, are measured and analyzed.