Section deformation analysis of irregular Y-shaped aluminum profile of multi-point stretch-bending process
In order to improve the forming quality after multi-point stretch bending of profile,from the perspective of the section deformation,based on ABAQUS finite element simulation,after the multi-point stretch bending of irregular Y-shaped aluminum profile,firstly,the influence law of different process parameters(number of dies,bending radius,pre-stretching amount,pro-stretching amount and friction coefficient)on the section deformation distribution of the workpiece is explored by means of the control variable method.Secondly,in order to comprehensively consider the interaction between the process parameters,combined with the orthogonal test analysis,the primary and secondary relationship of the influence of various process parameters on the maximum section deformation of the workpiece is further explored.The results show that when the pro-stretching amount changes,the maximum value of section width deformation is 1.58 mm,the minimum value is 1.06 mm,the variation range is 49.1％;the maximum value of section height deformation is 1.25 mm,the minimum value is 0.77 mm,and the variation range is 62.3％,that is,the pro-stretching amount has the greatest influence on the section deformation.Finally,the optimal forming scheme of multi-point stretch bending is determined after comprehensive analysis,and the feasibility of the forming scheme is verified by simulation and experiment,which greatly improves the forming quality of the parts.
multi-point stretch-bendingsection deformationcontrol variable methodprocess parametersorthogonal test
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