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The Kachanov Method for a Rigid-Plastic Rolling Problem

机译:刚塑性滚动问题的Kachanov方法

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摘要

In this work, the method of successive linearization, proposed by L. M. Kachanov for solving nonlinear variational problems, arizing in the deformation theory of plasticity, is applied to a steady state, hot strip rolling problem. The material behaviour is described by a rigid-plastic, incompressible, strain rate dependent material model and for the roll-workpiece interface a constant friction law is used. The problem is stated in the form of a variational inequality with strongly nonlinear and nondifferentiable terms. The equivalent minimization problem is also given. Under certain restrictions on the material characteristics, existence and uniqueness results are obtained and the convergence of the method is proved.
机译:在这项工作中,由L. M. Kachanov提出的用于解决非线性变化问题的连续线性化方法,在塑性变形理论中得到了证明,被应用于稳态热轧带钢问题。材料的性能通过硬塑料,不可压缩,应变率相关的材料模型来描述,对于轧辊-工件界面,使用恒定的摩擦定律。该问题以具有非线性和不可微分项的变分不等式形式表示。还给出了等效的最小化问题。在一定的材料特性限制下,获得了存在性和唯一性结果,证明了该方法的收敛性。

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