机械制造文摘-焊接分册
機械製造文摘-銲接分冊
궤계제조문적-한접분책
JIXIE ZHIZAO WENZHAI (HANJIE FENCE)
2015年
3期
12-15
,共4页
高温焊接%数值模拟%残余应力
高溫銲接%數值模擬%殘餘應力
고온한접%수치모의%잔여응력
high-temperature welding%numerical simulation%residual stress
建立了高温焊接工艺数值模拟模型，对在不同温度下高温焊接的温度场和焊接残余应力场进行了数值模拟。结果表明：500℃，600℃和700℃温度下高温焊接焊缝中心点上纵向残余应力相对于常温焊接的降低幅度分别为：57.3%，73.1%和81.3%，横向残余应力的降低幅度分别为：17.6%，36.9%和63.8%；高温焊接使得应力场的分布趋于均匀化，温度越高，应力分布也越均匀。
建立瞭高溫銲接工藝數值模擬模型，對在不同溫度下高溫銲接的溫度場和銲接殘餘應力場進行瞭數值模擬。結果錶明：500℃，600℃和700℃溫度下高溫銲接銲縫中心點上縱嚮殘餘應力相對于常溫銲接的降低幅度分彆為：57.3%，73.1%和81.3%，橫嚮殘餘應力的降低幅度分彆為：17.6%，36.9%和63.8%；高溫銲接使得應力場的分佈趨于均勻化，溫度越高，應力分佈也越均勻。
건립료고온한접공예수치모의모형，대재불동온도하고온한접적온도장화한접잔여응력장진행료수치모의。결과표명：500℃，600℃화700℃온도하고온한접한봉중심점상종향잔여응력상대우상온한접적강저폭도분별위：57.3%，73.1%화81.3%，횡향잔여응력적강저폭도분별위：17.6%，36.9%화63.8%；고온한접사득응력장적분포추우균균화，온도월고，응력분포야월균균。
This paper presents a numerical simulation model of high-temperature welding process. The temperature field and residual stress field of high-temperature welding at different temperature were investigated by numerical simulation. The numerical simulation result shows that: the longitudinal welding residual stress on high-temperature welding seam center point at 500℃, 600℃and 700℃ relative to normal welding decreases respectively: 57.3%, 73.1% and 81.3%, the transverse residual stress decreases respectively:17.6%, 36.9% and 63.8%; the stress field distribution of high-temperature welding tends to be uniform, the temperature is higher, the stress distribution is more uniform.
