摘要
运用COMSOL软件建立6061-T8铝合金激光焊接的数值仿真模型,在考虑表面吸收率的情况下,分析不同激光功率、不同焊接速度对焊接过程的影响。仿真结果表明,当激光功率较低时,焊件表面不会形成小孔,该焊接过程只是进行热传导;随着合金表面吸收率的增加,熔融时间先减小后基本保持不变;随着激光功率的增加,焊接深度和宽度逐渐增加;而随着焊接速度的增加,焊缝深度和宽度逐渐减小。
The numerical simulation model of laser welding of 6061-T8 aluminum alloy was established with COMSOL software.In consideration of the surface absorption rates,the influences of the different laser power and welding speed on the welding process were analyzed. The simulation results show that,when the laser power is low,the holes will not be formed on the surface of the welding,the welding process is just thermal conduction. With the increase of alloy surface absorption rate,the melting time decreases first and then remains unchanged. With the increase of laser power,welding depth and width increase. And with the increase of welding speed,welding depth and width decrease.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2016年第6期40-42,共3页
Ordnance Material Science and Engineering
基金
国家自然科学基金(60273041)
