Fatigue Assessment of High Strength Steel Welded Joints Under Bending Loading

被引：1

作者：

Lee, Myeong-Woo ^{[1
]}

Kim, Yun-Jae ^{[1
]}

Park, Jun-Hyub ^{[2
]}

机构：

[1] Korea Univ, Dept Mech Engn, Seoul, South Korea

[2] Tongmyong Univ, Dept Mechatron Engn, Busan, South Korea

来源：

TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS A | 2014年 / 38卷 / 10期

关键词：

Fatigue Bending Test; Welded Specimen; B10; Life; High Strength Steel; Stress Concentration;

D O I：

10.3795/KSME-A.2014.38.10.1163

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this study, a fatigue assessment method for vehicle suspension systems having welded geometries was established under a bending loading condition. For the fatigue life estimation of the actual product's welded joints made of different steels, bending fatigue tests were performed on welded specimens with a simplified shape for obtaining the moment-fatigue-life plot. Further, geometry modeling of the simplified welded specimens was conducted. Results of finite element analysis were used to obtain the stress-fatigue-life plot. The analysis results were also used to calculate the stress concentration factors for notch-factor-based fatigue life estimation. The test results were compared with results of the general notch-factor-based fatigue life estimation for improving fatigue assessment. As a result, it was concluded that both the welded fatigue tests and the notch-factor-based fatigue life estimation are necessary for accurate fatigue assessment.

引用

页码：1163 / 1169

页数：7

共 12 条

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