平辊薄件轧制的刚塑性有限元计算

本文用钢塑性有限元方法,对平辊同步和异步薄件轧制进行了计算,求出力能参数、速度场和应力应变场,并对二者加以比较。之后,又对异步轧制的特征进行了分析。

Calculation of Synchronous and Asynchronous Rolling with Plane Rolls by RFEM

Great progress has been made in the study of asynchronous rolling, but these studies are rather rough because the method used are not so suitable . It is difficult to describe the deformation in detail without the analysis of stress-strain fields. In this paper the roll force,specific pressure distribution, stress-strain-strainrate fields are obtained using RFEM. After analyzing the results, we obtained the following conclusions: In strip rolling the friction exerts a great influence on the pressure distribution.Comparing the asynchro -nous rolling with the normal rolling, the characteristics of them are different. The stress distribution in the deformation zone, and the direction and value of shear stress have been changed during asychronous rolling, this change makes the roll force decreasing, it is known as action of "cutting peak" .The behaviour in asynchronous rolling(such as "bending"of rolled-piece etc. ) is explained using the calculating results yet.