期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 103, 期 -, 页码 436-443出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2017.06.031
关键词
Fatigue life; Local stress approach; Equivalent damage life; Different temperatures; U-notched plate
In this paper, the fatigue lives of U-notched polymethyl methacrylate (PMMA) plate at different temperatures are numerically investigated on the basis of local stress approach. First, a local stress approach for fatigue damage at the U-notch is presented based on the principle of equivalent damage life. Second, the strength and stiffness degeneration criterions during the fatigue process are established to take account of the nonlinear cumulative fatigue damage. Finally, the commercial software ABAQUS is employed to predict the fatigue S-N curves of the U-notched PMMA plate at various constant temperatures of -55 degrees C, 23 degrees C and 60 degrees C using a user-defined material (UMAT) subroutine. The numerical results of the fatigue life are in good agreements with the experimental data, which verify the effectiveness of the local stress approach. (C) 2017 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