RESEARCH OF CHARACTERISTIC OF WRINKLING IN COLD FORMING PROCESS FOR SHIP FRAME PART BASED ON NUMERICAL SIMULATION

摘要

Frame parts of civilian ships, such as transverse and longitudinal, generally are formed with cool forming method. In the forming process, winkling is one kind of defect that occurs commonly. Wrinkling will lead to waste of material and even damage of forming equipment mould and the production will be affected. So prediction and control of wrinkling in cool forming process are key technique for profile forming work. Nonlinear finite element method has been used to the numerical simulation of profile cool forming process and the calculation results are used to analyse the characteristic of wrinkling in the of forming process in this paper.