期刊
THEORETICAL AND APPLIED FRACTURE MECHANICS
卷 74, 期 -, 页码 200-208出版社
ELSEVIER
DOI: 10.1016/j.tafmec.2014.09.006
关键词
Fretting fatigue; Strain energy density criterion; Critical process zone size
Fretting fatigue tests have been carried out on 7075-T6 aluminium alloy and En24 steel as a pad material to study the fretting fatigue failure life cycles. A theoretical model is developed using strain energy density criterion to estimate the process zone size at the contact edge for the three axial stresses 290 MPa, 300 MPa and 325 MPa. The number of cycles required to initiate a crack to the length of critical process zone size is termed as fretting fatigue crack initiation life cycles, N-I. The fretting fatigue crack propagation life is calculated using crack analogue model. The total fretting fatigue total life is the sum of crack initiation life and crack propagation life. The estimated process zone size decreases with the increase in axial stress. Theoretically calculated crack initiation lives based on the critical Process zone size model compares well with the experimental results. (C) 2014 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据