Application of the weakest link analysis to the area of fatigue design of steel welded joints

被引：22

作者：

Blacha, L. ^{[1
]}

Karolczuk, A. ^{[1
]}

Banski, R. ^{[2
]}

Stasiuk, P. ^{[1
]}

机构：

[1] Opole Univ Technol, Dept Mech & Machine Design, PL-45271 Opole, Poland

[2] Opole Univ Technol, Dept Mat Sci & Chipless Prod Engn, PL-45271 Opole, Poland

来源：

ENGINEERING FAILURE ANALYSIS | 2013年 / 35卷

关键词：

Welded joints; Fatigue failure; Weakest link concept; Efficient material; S-N CURVE; MULTIAXIAL FATIGUE; STRESS; LIVES; LIFE;

D O I：

10.1016/j.engfailanal.2013.06.012

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A new approach in the area of fatigue life assessment of steel welded joints is being proposed with the following features: (i) methodology of fatigue life calculation is independent from geometry of welded element; (ii) fatigue life assessment is based on fatigue characteristic of introduced efficient material - suitable for different steel welded joints; (iii) the fatigue life assessment is carried on the desired level of failure probability. In the proposed method a material volume surrounding the weld is divided into volume elements and regarded as a serial system having its definition in the reliability theory (the weakest link concept). Failure probability distribution of the welded structure is characterized by the proposed S-N curve for efficient material and the shape parameter introduced to describe the volume effect. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：665 / 677

页数：13

共 28 条

[21] Statistical distribution functions and fatigue of structures [J].