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    管材帶張力軋制的有限元分析

    FEM Analysis on Tube Stretch-rolling Process

    • 摘要: 采用大型非線(xiàn)性有限元軟件ANSYS/LS-DYNA對(duì)單機(jī)架三輥連軋管機(jī)軋制過(guò)程進(jìn)行有限元模擬。分析了前、后張力對(duì)軋制力、芯棒軸向摩擦力以及金屬延伸率的影響。研究表明,張力越大,軋制力越小,而金屬延伸率越大;增加前、后張力可以減小芯棒軸向摩擦力,但影響不是很大。研究結(jié)果為連軋管機(jī)孔型設(shè)計(jì)及軋輥速度調(diào)整提供了理論依據(jù)。

       

      Abstract: The tube rolling process with the single-stand 3-roll mandrel mill is simulated by using the large-scale,nonlinear FEM software ANSYS/LS-DYNA.The effects by both front and back stretches on the rolling force,the mandrel axial friction and the metal elongation are analyzed.It is identified via the analysis that the higher the stretch,the lower the rolling force,and the bigger the elongation,and that with increasing of both the front and back stretches,the mandrel axial friction can be reduced,but the influence is not obvious.The achievement from the above mentioned research is worthy using as the theoretic basis for pass design and roll speed adjustment of the mandrel mill.

       

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