工字梁焊接温度场的数值分析  

Analysis and Simulation of Welding Temperature Field with the I-beam

作　　者：付强[1,2] 党丽丽[1] 吴海涛[1] 

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046 [2]哈尔滨工业大学材料科学与工程学院,哈尔滨150001

出　　处：《机械工程师》2016年第5期242-243,共2页Mechanical Engineer

摘　　要：文中运用有限元分析方法,采用双椭球体热源模型,通过几何建模、初始、接触与边界条件的定义等,对工字梁角焊结构进行三维有限元模拟,求解得到焊接温度场。结果表明:工字梁焊接温度场具有准稳态的特征,近焊道节点表现出两次升温和降温且总体温度升高的规律,而远焊道节点仅表现为温度缓慢升高的趋势。随着逐渐远离焊道,各节点温度呈总体下降的趋势。The I-beam welding of double-ellipsoidal heat source model is simulated. The initial conditions boundary conditions contact conditions and geometric properties are defined. The welding temperature field is described. The results indicate that the simulated welding temperature field of I-beam has feature of quasi-stable state. The node near welding bead shows the rules that the temperature rises and drops two times, and the total temperature rises. The node far from welding bead shows the rules that the temperature rises slowly. The temperature of node decreases when the welding bead distance increases.

关 键 词：工字梁焊接 数值模拟 温度场 角焊接 

分 类 号：U441.5[建筑科学—桥梁与隧道工程] U448.36[交通运输工程—道路与铁道工程]