复合板轧制界面周期性波动的模拟与试验

 为了探究复合板轧后复合界面产生周期性厚度波动的机理和影响因素,基于商用有限元分析软件ABAQUS建立了铝/钢/铝三层对称复合板轧制的有限元模型。通过对轧制过程复合板各层应力变化规律的分析,表明在铝/钢/铝复合板轧制过程,钢层和铝层存在明显的变形不协调现象,铝层的变形趋势明显大于钢层,导致钢层在轧制方向产生拉应力并使钢层发生厚度减薄。同时厚度减薄的发生改变了周围区域的应力分布,使厚度波动呈现周期性特征,通过实验室的轧制试验验证了模拟和分析结果的正确性。

Simulation and experiment on periodic interfacial fluctuation in clad plate rolling

In order to explore the mechanism and influencing factors of the periodic thickness fluctuation at the composite interface after rolling,a finite element model of aluminum/steel/aluminum three-layer symmetrical composite plate rolling was established based on commercial FEM software ABAQUS. Through the analysis of the stress variation law of each layer in the rolling process of the clad plate,it is found that the deformation of steel layer and aluminum layer is obviously inconsistent,and the deformation trend of the aluminum layer is obviously greater than that of the steel layer,which leads to the tensile stress in the rolling direction of steel layer and the thickness thinning of steel layer. At the same time,the occurrence of thickness thinning changes the stress distribution in the surrounding area and makes the thickness fluctuation presents periodic characteristics. The correctness of the simulation and analysis results is verified by the rolling experiment in the laboratory.