Numerical Simulation Of The Rolling Process Of Cu-u Composite Plate

The numerical simulation of rolling composite process for Cu-u plate has been conducted by rigid plastic finite element method with software ANSYS/LS-DYNA.The strain and strain rate in the deforming zone during the rolling-bonding process has been analyzed, and special attention has been concentrated to the interface of Cu-u to quantitatively determined the deformation coordination at the interface. The strain and strain rate fields under different deformation rate, rolling speed and raw material thickness have been computed to optimized the rolling-bonding process. The results are as follows:The deformation rate significantly affects the rolling-bonding process, within the ability of the mill. Appropriate increasing relative deformation rate can get better composite effect, the rolling speed to rolling composite effect is obviously, slow rolling, the deformation speed of composite interface reached agreement, and the deformation is coordinated, properly increasing the friction coefficient can be combined to achieve the smooth rolling, properly increasing the Cu plate thickness, decreasing the thickness of the plate u can make Cu-u plate rolling deformation of the interface is more complex coordination.Considering the above factors influence to the composite interface, combined with the actual process, we get optimum conditions in the complex process of Cu-u plate rolling: The deformation rate range is from 50% to 70%, rolling speed range is from 30 to 60 r/min, fs range is from 0.4 to 0.5, fd range is from o.3 to 0.4, thickness of Cu:u range is from 2:1 to 1:1.