本文選題：坡口間隙 + 多層多道焊接��； 參考：《焊接學(xué)報(bào)》2017年09期

【摘要】：坡口間隙的存在及其在不同拘束條件下會(huì)對(duì)焊接變形產(chǎn)生不同影響.以平板對(duì)接多層多道焊為研究對(duì)象,將坡口間隙作為考慮因素添加到焊接數(shù)值模擬模型中,采用試驗(yàn)測(cè)量與焊接仿真相結(jié)合的方法,在不同拘束條件下研究坡口間隙對(duì)焊接變形的影響效果,為進(jìn)一步利用數(shù)值方法解決焊接變形問(wèn)題提供了參考依據(jù).結(jié)果表明,相同拘束條件下,有無(wú)坡口間隙對(duì)焊接變形趨勢(shì)影響并不明顯,但對(duì)殘余變形數(shù)值大小影響顯著,且在彈簧拘束條件下焊接變形結(jié)果差別最大;被焊平板存在坡口間隙時(shí),彈簧拘束條件下的模擬結(jié)果與自由狀態(tài)下焊接試驗(yàn)獲得的焊接變形結(jié)果最為一致.
[Abstract]:The existence of groove clearance and its influence on welding deformation under different restraint conditions. Taking the multi-layer and multi-pass welding of plate butt joint as the research object, the groove clearance is added to the numerical simulation model of welding, and the method of combining experimental measurement with welding simulation is adopted. The effect of groove clearance on welding deformation is studied under different restraint conditions, which provides a reference for solving welding deformation problem by numerical method. The results show that the effect of groove clearance on welding deformation is not obvious under the same restraint condition, but it has a significant effect on the value of residual deformation, and the difference of welding deformation under spring restraint is the greatest. When the groove gap exists in the welded plate, the simulation results under spring restraint condition are most consistent with the welding deformation results obtained by welding test in free state.
【作者單位】： 江蘇徐州工程機(jī)械研究院;徐工集團(tuán)工程機(jī)械有限公司高端工程機(jī)械智能制造國(guó)家重點(diǎn)實(shí)驗(yàn)室;南京航空航天大學(xué)材料科學(xué)與技術(shù)學(xué)院;
【分類(lèi)號(hào)】：TG404

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本文編號(hào)：1811950