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基于对铜包铝双金属复合材料轧制变形过程进行的有限元模拟,建立了双金属复合材料轧制变形分区模型,可分为弹性区、单材料塑性区、后滑区、揉轧区和前滑区。以铜的体积分数为变量,对不同铜含量的铜包铝复合材料的轧制过程进行模拟,在单一材料轧制力理论计算公式的基础上,提出了双金属复合材料轧制力的理论计算公式,通过对铜包铝复合材料轧制的试验和不同压下率下的铜包铝双金属复合材料轧制成形的有限元模拟,对所推导出的轧制力公式进行了验证。
Based on the finite element simulation of the rolling and deformation process of the clad-clad bimetallic composites, a bimetallic composite rolling deformation zone model is established and can be divided into elastic zone, single-material plastic zone, rear zone, kneading zone and Front slide zone. Taking the volume fraction of copper as a variable, the rolling process of copper clad aluminum composites with different copper contents was simulated. Based on the theoretical calculation formula of the rolling force of single material, the theoretical calculation of the rolling force of bimetallic composites Formula, the rolling force of the copper clad aluminum composite test and the rolling reduction of the copper clad aluminum bimetallic composite under different reduction rates are simulated by the finite element method, and the deduced rolling force formula is verified.