Study on uniformity of sheet electromagnetic bulging based on bidirectional electromagnetic force loading
To solve the problem of non-uniformity deformation in traditional sheet during electromagnetic bulging,a method of sheet elec-tromagnetic bulging method based on bidirectional electromagnetic force loading was proposed.A two-dimensional axisymmetric simulation model of sheet electromagnetic bulging was established by COMSOL simulation software.On the basis of expounding the basic principle of sheet electromagnetic bulging,the influence of system structure parameters on the deformation uniformity of sheet was studied,and the comparative analysis was conducted with traditional electromagnetic force loading method.The results show that the bidirectional electro-magnetic force loading can effectively restrain the bulge of the middle part of the sheet,the deformation uniformity of the sheet is greatly improved.The maximum uniform deformation area of sheet increases from 22.5 mm to 61.2 mm with the same bulging height,which is increased by 2.7 times.Therefore,through the design of reasonable system parameters,the bidirectional electromagnetic force loading method can improve the problem of insufficient uniformity of electromagnetic bulging for sheet.
万方数据
维普
