Finite-element modelling and updating of laser spot weld joints in a top-hat structure for dynamic analysis

被引：27
作者：
Husain, N. A. [1 ]
Khodaparast, H. H. [1 ]
Snaylam, A. [1 ]
James, S. [1 ]
Dearden, G. [1 ]
Ouyang, H. [1 ]
机构：
[1] Univ Liverpool, Dept Engn, Liverpool L69 3GH, Merseyside, England
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE | 2010年 / 224卷 / C4期
关键词：
finite-element modelling; model updating; modal testing; laser welding; spot weld joints; CWELD; BOLTED JOINTS; SELECTION; PERFORMANCE; SIMULATION; ALUMINUM;
D O I：
10.1243/09544062JMES1787
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Spot welds made by resistance spot welding are used extensively in automotive engineering. However, owing to increasing demands in the use of advanced and lightweight materials, laser welding has become a popular alternative for producing spot welds. Because of the complexity and uncertainties of laser welds and thus formed structures, the finite-element (FE) modelling of the welds for dynamic analysis is a research issue. This article first outlines some of the existing modelling works of spot welds. Then, a hat-plate structure used for this study is described and its FE representations are explained. The welds are modelled using CWELD elements in MSC/NASTRAN and their feasibility for representing laser spot welds is investigated. Numerical results for the initial FE model differ considerably from that of their experimental counterparts; hence, a model updating procedure is carried out to minimize the discrepancy between the two sets of results. In this work, the updating is posed as an optimization problem and is performed using the structural optimization capability (SQL 200) in MSC/NASTRAN. Two stages of updating are conducted, that is (a) updating FE models of individual components and (b) updating an FE model of the welded structure. Crucial steps in updating are explained. It is found that by selecting the right updating parameters, the CWELD element can be used to represent laser spot welds with good accuracy.
引用
收藏
页码：851 / 861
页数：11
相关论文
共 31 条
[1]   Parameter selection strategies in finite element model updating [J].
Ahmadian, H ;
Gladwell, GML ;
Ismail, F .
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME, 1997, 119 (01) :37-45
[2]  
Avitabile P., 2001, SOUND VIB MAG, V35, P1
[3]   Performance of shell elements in modeling spot-welded joints [J].
Chen, W ;
Deng, X .
FINITE ELEMENTS IN ANALYSIS AND DESIGN, 2000, 35 (01) :41-57
[4]   Fatigue strength in laser welding of the lap joint [J].
Cho, SK ;
Yang, YS ;
Son, KJ ;
Kim, JY .
FINITE ELEMENTS IN ANALYSIS AND DESIGN, 2004, 40 (9-10) :1059-1070
[5]   Resistance spot welding of aluminium and steel: a comparative experimental study [J].
Cho, Y ;
Hu, SJ ;
Li, W .
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE, 2003, 217 (10) :1355-1363
[6]   Finite element simulation of laser spot welding [J].
De, A ;
Maiti, SK ;
Walsh, CA ;
Bhadeshia, HKDH .
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2003, 8 (05) :377-384
[7]   Three-dimensional finite element analysis of the mechanical behavior of spot welds [J].
Deng, X ;
Chen, W ;
Shi, G .
FINITE ELEMENTS IN ANALYSIS AND DESIGN, 2000, 35 (01) :17-39
[8]   The robustness of dynamic vehicle performance to spot weld failures [J].
Donders, S ;
Brughmans, M ;
Herrnans, L ;
Liefooghe, C ;
Van der Ameraer, H ;
Desmet, W .
FINITE ELEMENTS IN ANALYSIS AND DESIGN, 2006, 42 (8-9) :670-682
[9]   Three dimensional modeling weld solidification cracks in multipass welding [J].
Dong, Z. B. ;
Wei, Y. H. .
THEORETICAL AND APPLIED FRACTURE MECHANICS, 2006, 46 (02) :156-165
[10]   Finite element model updating of structures using a hybrid optimization technique [J].
Duan, ZD ;
Liu, Y ;
Spencer, BF .
SMART STRUCTURES AND MATERIALS 2005: SENSORS AND SMART STRUCTURES TECHNOLOGIES FOR CIVIL, MECHANICAL, AND AEROSPACE, PTS 1 AND 2, 2005, 5765 :335-344
1234