Thermal analysis of horizontal fillet joints by considering bead shape in gas metal arc welding

被引:10
作者
Cho, SH [1 ]
Kim, JW [1 ]
机构
[1] Yeungnam Univ, Sch Mech Engn, Gyongsan 712749, South Korea
关键词
D O I
10.1179/136217101101538802
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In gas metal arc (GMA) welding, the weld size, that is, the locally melted area of a work-piece, is one of the most important factors determining the strength of a welded structure. Variations in the welding power and the welding heat flux may affect the weld pool formation and ultimately the sie of the weld. Therefore, an accurate prediction of the weld side requires a precise analysis of the weld thermal cycle. In the present study, a model that can estimate the weld bead geometry and a method for thermal analysis, including the model, are suggested. To analyse the weld bead geometry, a mathematical model was developed with transformed coordinates to apply to horizontal fillet joints. A heat flow analvsis was performed using a two-dimensional finite element model that was adopted to compute the base metal melting::one. The reliability of the proposed model and the thermal analvsis was evaluated through experiments, and the results showed that the proposed model was highly effective in predicting the weld bead shape, and that the predicted melting zone of the base metal also corresponded well with the experimental profile.
引用
收藏
页码:220 / 224
页数:5
相关论文
共 10 条
[1]  
DETTMAN JW, 1969, MATH METHODS PHYSICS, P109
[2]   A NEW FINITE-ELEMENT MODEL FOR WELDING HEAT-SOURCES [J].
GOLDAK, J ;
CHAKRAVARTI, A ;
BIBBY, M .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1984, 15 (02) :299-305
[3]  
JASBIR S, 1994, INTRO OPTIMUM DESIGN, P308
[4]  
KIM JW, 1995, WELD J, V74, pS141
[5]   3-DIMENSIONAL FINITE-ELEMENT MODELING OF GAS METAL-ARC WELDING [J].
KUMAR, S ;
BHADURI, SC .
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 1994, 25 (03) :435-441
[6]   PRESSURES PRODUCED BY GAS TUNGSTEN ARCS [J].
LIN, ML ;
EAGAR, TW .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1986, 17 (03) :601-607
[7]  
Michaleris P, 1997, WELD J, V76, pS451
[8]   PREDICTION OF WELD POOL AND REINFORCEMENT DIMENSIONS OF GMA WELDS USING A FINITE-ELEMENT MODEL [J].
PARDO, E ;
WECKMAN, DC .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1989, 20 (06) :937-947
[9]  
PAVELIC V, 1969, WELD J, V48, pS295
[10]  
Tekriwal P., 1988, WELD J, V67, P150