宽带钢拉伸弯曲矫直变形过程的有限元仿真

Simulation of Wide Steel Strip Deformation during Tension Levelling by Finite Element Method

宽带钢的拉伸弯曲矫直过程是目前尚无法解析求解的复杂弹塑性变形过程。以某1550酸轧'两弯一矫'式拉伸弯曲矫直机为对象,首次运用MARC有限元软件对这一变形过程进行了仿真研究,并提出一系列描述拉矫机理和效果的概念和指标。系统的数值仿真计算与分析不仅揭示了带钢拉矫变形的力学机理,而且给出了插入深度、张力、弯曲辊辊径以及带钢规格材质等多个因素对拉矫过程和效果的影响规律与特点。

Elastic-plastic deformation of wide strip in tension levelling is researched with finite element method（FEM） software MARC according to 1550 CDCM＇ Tension Leveller of BaoSteel for the first time. Up to now, there is still no calculation of the elastic-plastic deformation with analytical method. In order to describe behaviors and principles of the tension leveller for wide steel strip levelling well and truly, a series of new definitions and descriptions are put forward. Based on large numbers of numerical simulation and systemic analysis, some new rules of tension levelling and relations between elongation and technics factors, such as intermesh, tension, the woking roller diameter and strip＇s specification and material quality, are discovered, and many significative conclusions about tension leveling technology and tension leveler behaviors are obtained.