NUMERICAL SIMULATION OF STRESS-STRAIN DISTRIBUTIONS FOR WELD METAL SOLIDIFICATION CRACKING IN STAINLESS STEEL

查看全文 作　　者：Y. H. Wei;R. P. Liu and Z. J. Dong( 1) National Key Laboratory of Advanced Welding Production Technology, HIT, Harbin 150001, China 2) Harbin Research institute of Welding,Harbin 150080, China) 出　　处：《Acta Metallurgica Sinica(English Letters)》索引2000年第13卷第1期,共6页 摘　　要：This paper analyzed the characteristics of welding solidification crack of stainless steels,and clearly re- vealed the the of the deformation in the molten - the pool and the solidification shrinkage on the stress - strain fields in the trail of molten - weld pool.Moreover, rheologic properties of the alloys in solid - liquid zone were also obtained by measuring the hading and unloading deform curves of the steels.As a result, a numerical model for simulation of stress - strain distributions of welding solidifi- cation crack was developed. On the basis of the model,the thesis simulated the driving force of solidifi- cation crack of stainless steels, that is, stress - strain fields in the trail of molten-weld pool with fi- nite element method. 关 键 词：WELDING SOLIDIFICATION CRACK WELDING SOLIDIFICATION CRACK driving force FINITE element method stress - strain field numerical simulation