基于高斯热源的钢轨气压焊火焰加热温度场数值模拟及加热器优化设计  

Numerical simulation on temperature field of flame heating process of rail gas pressure welding and optimization design of heater based on Gaussian heat source

作　　者：江俊志[1] 戴虹[1] 周世恒[1] 

机构地区：[1]西南交通大学,四川成都610031

出　　处：《电焊机》2014年第1期9-14,共6页Electric Welding Machine

摘　　要：基于高斯热源模型,采用ANSYS有限元分析软件对60 kg/m钢轨及QU100火箭橇滑轨的气压焊火焰加热过程进行了有限元模拟。结果表明:采用高斯热源模型模拟,所得到的60 kg/m钢轨气压焊火焰加热结果与实际测量值吻合良好,平均相对误差为10.4%;所得到的QU100火箭橇滑轨正火加热结果与实际测量值吻合良好,平均相对误差为8.0%;对60kg/m钢轨气压焊接加热器进行优化设计,加热后焊接端面温差减小了11.74%,其模拟方法和计算结果可以作为不同轨型钢轨气压焊加热器设计的理论依据。Based on Gaussian heat source,the flame heating processes of gas pressure welding for 60 kg/m rail and QU100 rocket sled rail were simulated by ANSYS finite element analysis software.It is shown that the simulation results for 60 kg/m rail and QU 100 rocket sled rail are in good agreement with experimental results,the average relative errors with the two models are respectively 10.4% and 8.0%.The calculation results of optimization design of gas pressure welding heater for 60kg/m rail indicate that the difference between maximum and minimum temperature of the welded surface is reduced by 11.74% than the original,which can be the theoretical foundation to design rail gas pressure welding heater of different types together with the simulation method.

关 键 词：钢轨 气压焊 温度场 ANSYS 优化设计 加热器 

分 类 号：TG453.2[金属学及工艺—焊接]