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基于能量法的不銹鋼冷彎成型過(guò)程分析
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    摘要:

    以冷彎型鋼中的槽鋼為例,,分析了其輥彎成型的特點(diǎn)及變形規(guī)律,。采用符拉索夫的開(kāi)口薄壁梁的約束扭轉(zhuǎn)理論建立分析模型,通過(guò)對(duì)該模型的研究,,利用簡(jiǎn)化解析法的思想,,將冷彎成型過(guò)程的整個(gè)變形分為縱向翼緣的扭轉(zhuǎn)變形和橫向圓角處的彎曲變形,。采用能量法對(duì)冷彎成型過(guò)程中的縱向變形和橫向變形兩部分能量分別進(jìn)行計(jì)算,求取了整個(gè)冷彎型鋼槽鋼的翼緣彎曲角表達(dá)式,。將理論計(jì)算結(jié)果曲線(xiàn)與相關(guān)實(shí)驗(yàn)結(jié)果所得曲線(xiàn)以及現(xiàn)有結(jié)論的曲線(xiàn)進(jìn)行了比較,,驗(yàn)證了計(jì)算方法的有效性、可靠性及計(jì)算結(jié)果的正確性,。

    Abstract:

    Based on the cold roll forming steel, its characteristic of roll-forming and deforming rule was analyzed. The analytic model has been built by using the theory of Vlasov open thin wall beam restraint distortion. Through studying the model, and by using simplified analysis method, the whole distortion of cold roll forming course could be divided into flange girth torsion deforming of longitudinal direction and circular bead rebounding deforming of lateral direction. The energy method has been adopted to calculate its longitudinal direction and lateral direction deforming energy during the roll-forming course respectively. The flange girth bending angle expression of the whole cold roll-forming steel was obtained. Theory curve was compared with the relative experimental and the existing conclusion curve, the availability, dependability of the calculating method and validity of the calculating result are validated.

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楊曉紅,陳兆峰.基于能量法的不銹鋼冷彎成型過(guò)程分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2007,38(8):149-154.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(8):149-154.

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