铜包铝复合材料轧制变形过程模拟及轧制力计算公式

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.

Roll deformation process simulation and rolling force calculation formula of copper clad aluminum composites

A bimetallic composite rolling deformation partitioning model was established based on the finite element simulation of roll deformation process of copper clad aluminum bimetallic composites. The deformation zone was divided into five parts, namely, elastic region, single material plastic zone, back slip zone, knead rolling area and forward slip zone. On the basis of theoretical calculation formula of rolling load for single material, the rolling load calculation formula for bimetallic composites was proposed by simulating the rolling process of copper clad aluminum composites with variables of different Cu volume fractions. The rolling load formula was verified by rolling test and the finite element simulation of rolling process for copper clad aluminum composites with different reduction rates.