Double Objective Optimization and Experimental Verification of Incremental Forming Process Parameters of 5052 Aluminium Alloy Sheet
Aiming at the single point incremental forming process of metal sheet,5052 aluminium alloy sheet with strong forming per-formance was selected for study.The single point incremental forming finite element model of was established based on Abaqus.Tak-ing the diameter of the tool head,the axial feed rate and the initial thickness of the sheet as the study variables,the maximum Mises stress and the maximum thinning rate of the conical table structure after forming as the optimization objectives,the orthogonal test was designed,and the parameters of each group were simulated and analyzed.The process parameters were optimized by Taguchi analysis and variance analysis.The optimization results show that the axial feed rate and the initial thickness of the sheet are the significant items affecting the maximum Mises stress.The final optimized process parameter combination is the tool head diameter of 8 mm,the axial feed rate of 0.5 mm,and the initial thickness of the sheet of 0.5 mm.The maximum Mises of the conical table structure after the analy-sis of the process parameters is 213.35 MPa,and the maximum thinning rate is 38.32%.It is verified by the single point incremental forming test that the surface quality of the formed conical table structure is good,which also shows that the combination of process pa-rameters has the feasibility of practical application.
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