Investigating Fatigue Life Effects on the Vibration Properties in Friction Stir Spot Welding Using Experimental and Finite Element Modal Analysis

被引：10

作者：

Aghdam, Nima Jafarzadeh ^{[1
]}

Hassanifard, Soran ^{[1
]}

Ettefagh, Mir Mohammad ^{[1
]}

Nanvayesavojblaghi, Arvin ^{[1
]}

机构：

[1] Univ Tabriz, Dept Mech Engn, Tabriz, Iran

来源：

STROJNISKI VESTNIK-JOURNAL OF MECHANICAL ENGINEERING | 2014年 / 60卷 / 11期

关键词：

friction spot welding; fatigue damage; frequency response; experimental modal analysis; finite element modelling; vibration characteristics; DYNAMIC-RESPONSE CHARACTERISTICS; WELDED-JOINTS; NATURAL FREQUENCY; SHEETS; MODEL;

D O I：

10.5545/sv-jme.2013.1324

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Frequency response and vibration study of friction-welded specimens with different fatigue life properties is very important. Friction stir spot welding (FSSW) is one of the welding methods applied in different types of manufacturing processes such as in the vehicle and aerospace industries. Therefore the main purpose of this paper is better understanding of the correlation between natural frequencies and fatigue crack initiation of the FSSW in four different welding processes. For this purpose fatigue and experiment modal analysis tests were carried out at different fatigue strength levels. The experimental modal analysis was carried out on four different types of friction stir spot welded specimens after different fatigue life tests. Finite element (FE) modelling was performed in ABAQUS software using the Lanczos method for comparing the obtained results with the experimental tests. Some important findings were determined from the experimental and FE modelling results. One of the interesting findings was similar behaviour between the FE model and the experimental test for defined frequency ranges.

引用

页码：735 / 741

页数：7

共 18 条

[1] Microstructure and Mechanical Properties of Friction Stir Spot Welded Galvanized Steel [J].