基于過(guò)彎缺陷控制的異型管輥彎成型過(guò)程有限元仿真
[Abstract]:Aiming at the forming quality defect of asymmetrical "8" shaped special shaped pipe in roll bending forming, the finite element model of special shaped pipe roll bending forming is established by using the elastic plastic deformation theory and the professional software of roll bending forming design and simulation, COPRA. The finite element simulation of 12-frame complete roll bending process is carried out. The results show that the stress concentration is easy to occur at the junction between the small radius fillet of the asymmetrical "8" shaped pipe section and its adjacent straight line segment. The non-uniform force on the tip caused by the geometric shape of the pipe section is the main cause of the over-bending defect. In order to counteract the overbending caused by the pressure imbalance, the new roll shape of the 7th stand flat roll and the eighth stand vertical roll based on the control of the over-bending defect are simulated and designed, and the quality of the new roll shape formed by the actual production is good.
【作者單位】: 北京科技大學(xué)機(jī)械工程學(xué)院;北京科技大學(xué)國(guó)家板帶生產(chǎn)先進(jìn)裝備工程技術(shù)研究中心;江蘇帝爾保機(jī)械有限公司;
【基金】:國(guó)家創(chuàng)新方法工作專項(xiàng)項(xiàng)目(2016IM010300) 高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金(博導(dǎo)類)資助項(xiàng)目(20120006110015) “綠揚(yáng)金鳳計(jì)劃”創(chuàng)新領(lǐng)軍人才計(jì)劃項(xiàng)目(yzlyjfjh2015CX055) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資助項(xiàng)目(FRF-BR-15-039A)~~
【分類號(hào)】:TG306
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