發(fā)布時間：2018-11-14 09:51

【摘要】：針對交叉筋壁板激光成形后的整體扭曲變形現(xiàn)象,采用相應(yīng)的校正方法對板材進(jìn)行了校正,并利用有限元分析進(jìn)行了研究。研究表明交叉筋壁板激光成形后出現(xiàn)的整體扭曲現(xiàn)象是由板材中部加強(qiáng)筋側(cè)傾失穩(wěn)造成的,提出板材掃描線不同部位協(xié)同變形為成形的關(guān)鍵并提出了協(xié)同變形掃描方式。針對協(xié)同變形掃描方式消除板材整體扭曲變形的現(xiàn)象進(jìn)行了有限元分析,結(jié)果顯示采用協(xié)同變形掃描方式后板材中部蒙皮所受到的約束減小,產(chǎn)生的拉應(yīng)力減小,從而減小了對中部加強(qiáng)筋的壓縮,消除了中部筋的側(cè)傾失穩(wěn),最終避免了交叉筋壁板激光成形后的整體扭曲現(xiàn)象。
[Abstract]:In view of the distortion phenomenon of the cross stiffened panel after laser forming, the corresponding correction method is used to correct the plate, and the finite element analysis is used to study it. The research shows that the overall distortion of the cross bar wall plate after laser forming is caused by the roll instability of the reinforcing bar in the middle of the plate. The cooperative deformation of different parts of the plate scanning line is proposed as the key to the forming and the cooperative deformation scanning mode is also put forward. The finite element analysis is carried out to eliminate the distortion of the whole plate by the cooperative deformation scanning method. The results show that the constraint of the skin in the middle part of the plate is reduced and the tensile stress is reduced after the cooperative deformation scanning method is adopted. Thus, the compression of the central stiffener is reduced, the roll instability of the central reinforcement is eliminated, and the overall distortion of the cross-stiffened wall plate is avoided after laser forming.
【作者單位】： 哈爾濱工業(yè)大學(xué)機(jī)電工程學(xué)院航空宇航制造工程系;
【基金】：國家科技重大專項(xiàng)(2014ZX04001-151) 國家自然科學(xué)基金(51375120)資助
【分類號】：TG665

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1 陳利紅;;論語言的扭曲現(xiàn)象[A];貴州省翻譯工作者協(xié)會2008年翻譯學(xué)術(shù)研討會交流論文匯編[C];2008年

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本文編號：2330826