Fatigue life of multi-spot welded structures

被引：0
|
作者：
Salvini, Pietro [1 ]
Vivio, Francesco [1 ]
Vullo, Vincenzo [1 ]
机构：
[1] Univ Roma Tor Vergata, Dept Mech Engn, Rome, Italy
来源：
ADVANCES IN FRACTURE AND DAMAGE MECHANICS VI | 2007年 / 348-349卷
关键词：
spot welds; progressive damage; jointed structures; finite element modelling;
D O I：
10.4028/www.scientific.net/KEM.348-349.249
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A procedure that makes use of a conventional stress value (ERS) is applied to spot welded joints. The ERS can be evaluated for every spot weld of the structural model. Through the use of ERS-N curves, fatigue data performed on different joint geometries can be successfully mixed together. One of the main aspects is that progressive damage deeply influences fatigue behaviour, so that a simple numerical solution neglecting accumulated damage is unable to foresee the whole fatigue life. In the present paper the method has been applied to many experimental results: it is shown that a unique criterion is able to deal with several different structures and materials.
引用
收藏
页码：249 / +
页数：2
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