Fatigue-fracture Solution of Iron Wire under Pseudo-periodic Strain

摘要：

　　Under pseudo-periodic strain actions, the thermo-effect takes an important role for the fatigue-fracture of material.How to construct the related mechanics model is a practical problem studied in this paper.For simple bending of iron wire under pseudo-periodic, based on local rotation concept, the deformation is described by the local rotation angle.Then, the related motion equations are used to get the theoretic form of life-strain rate relation.The results show that:1) The local rotation angle rate can represent thermo-effects well; 2) The fatigue-fracture center is at the position of maximum local rotation angle;3) The intrinsic mechanism of fatigue-fracture of material is the local rotation of material.

关键词： fatigue-fracture local rotation angle strain rate simple bending of rod non-linear motion equation rational mechanics

作者: Jingjing Wang Jianhua Xiao

作者单位: Measurement Institute,Henan Polytechnic University,Jiaozuo,China

会议类型: 国际会议

会议名称: 2014 International Symposium on Structural Integrity,ISSI2014(2014国际结构完整性学术会议)

会议地点: 兰州

会议语种:英文

页码: 381-387

在线出版日期: 2014-08-20（万方平台首次上网日期，不代表论文的发表时间）