A study of the stress and strain distributions of first-pass conventional spinning under different roller-traces
A study of the stress and strain distributions of first-pass conventional spinning under different roller-traces
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DOI：
10.1016/s0924-0136(02)00682-9
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发表时间：
2002-10-11
影响因子：
6.3
通讯作者：
Li, YQ
中科院分区：
文献类型：
--
作者：
Liu, JH;Yang, H;Li, YQ
本文在建立合理的典型牵伸纺纱力学模型的基础上，采用弹塑性有限元方法对纺纱第一道次进行了研究。得到了直线、渐开线曲线和二次曲线三种滚道曲线下的应力和应变分布。所获得的径向和切向应力的分布规律可以为确定不同罗拉轨迹下多道次常规旋压的成形极限提供重要指导。比较三种罗拉轨迹的应变和应力分布，可为多道次常规纺纱中合理选择罗拉轨迹提供理论依据。 (C) 2002 年，Elsevier Science B.V. 出版
In this paper, based on the establishment of a reasonable mechanics model for a typical draw-spinning, research on the first pass of the spinning process is carried out with an elasto-plastic FEM method. The distributions of the stress and strain are obtained under three types of roller-trace curves: straight lines, involute curves and quadratic curves. The distribution laws of the radial and tangential stress that are obtained can serve as a significant guide to determining the forming limits in multi-pass conventional spinning under different roller-traces. Comparison of the distributions of strain and stress of three roller-traces could provide a theoretical basis for selecting a reasonable roller-trace in multi-pass conventional spinning. (C) 2002 Published by Elsevier Science B.V.