Finite Element Analysis Of The Roll Of The Battery Pole-piece Rolling Mill

The depletion, exhaustion of energy and the deterioration of the environmenthave become serious bottlenecks constraining economic and social development.Li-ion battery is getting more and more attention in the field of electric vehicles withthe development of new energy promotion. The Li-ion battery have high energydensity, the price is opposite cheap,and the function is stable. Nowadays, therequirement of the battery quality is much higher than before, and the homogeneity ofthe Pole-pieces performance have crucially influence upon the battery.Rolling mills is the mean and most important equipment in rolling process. Theelastic deformation of d roller is directly effect on the shape of finally cross-sectionand the dimensional accuracy.The roller is the main supporting body of the draughtpressure. So it has very important theoretical and practical significance to study thestructure parameters of the roll.In this paper, according to the practical roiling standard and based on the finiteelement theory, use the finite element analysis soflware-ANSYS, the study on staticand dynamic performance of developing XLCWL80×75rolling mill’s roller has beendone.In this thesis, simplify the front axle entity model into reasonable mechanicalmodel, and choice two static analysis conditions, discussed the stress-straindistribution of roller in these two conditions. Moreover, it uses strength theory tocollate roll’s strength, and check its stiffness.Meanwhile, combine the finite element Modal Analysis method to conduct roll’sModal Analysis. And through Block Lanczos to extract the front5stages naturalfrequency and mode of vibration of roll. By analyzing the modes of the roll indifferent constraint conditions，the laws of the variation of natural frequencies andvibration modes and the1aws of the effects of constraint conditions on the model ofrolls are obtained, and critical speed of roll are calculate. the study provide the theoryreference for the roll′s vibration characteristic analysis and structural design.The analysis results show that, the strength of the roller can meet theperformance requirements. The rolling performance for200mm wide is not reasonable. Rolling of640mm, need to decrease the rolling force. Increase thestiffness of the bearing, which is beneficial to improve the natural frequency of roller,especially the low order natural frequency. Finally, the work speed of roll is muchlower than the critical speed, and effectively avoid the resonance region.The results obtained in this dissertation offered references to site production andfutured rolling mill′s design.