Simulation analysis of plastic finite element of stamping and forming crystals of aluminum plates
In order to study the size effect on the microforming of bipolar plates,polycrystalline Voronoi models were established with different grain sizes by Neper software by using a multi-channel structure and selection of 0.1 mm thick 1060 pure aluminum sheet as the research material.Meanwhile,a random orientation was assigned to each grain by using Python script to simulate the microstamping deformation process.The effects of grain size on the microstamping process and quality,including the ultimate forming depth,load-stroke relationship,dimensional accuracy,and forming thickness distribution,were investigated by crystal plasticity finite element simulation molding.The results showed that the ultimate forming depth of the plate decreased with the increase of grain size,the maximum deformation load gradually decreased,and the thickness distribution was more uneven,especially in the corner region where the thinnest position occurs.
bipolar plate formingstampingcrystal plasticity finite element methodsize effect
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