KMAS Simulation And Mensurate Of Parameters Of Stamping Forming Of Floor For Automobile

As an important plastic working technique,sheet metal stamping forming is broadly applied in industry field especially in automobile manufacturing.Recent years,high strength steel sheet metal and aluminum alloy sheet metal has been greatly applied in the manufacturing of automobile pressing parts.However,in the stamping process,the sheet metal often appears wrinkle,reduce the cost of products and shorten the period of production by using the numerical simulation in finite element in the stamping process of automobile pressing parts.Tt is researched the stamping forming of crossbeam for automobile by using the numerical simulation in finite element,analyzed the main defect of stamping forming of the crossbeam,several technologic parameters influencing stamping forming of the crossbeam are also studied,Finally the paper confirmed the influence order of V Z u BHF(blank holder force) and the best combination of parameters of stamping forming of crossbeam by using orthogonal test.The principal contents in this paper are as follows:1. The theory foundation of sheet metal stamping forming has been researched.The theory and key techniques of numerical simulation in finite element are expounded such as benging rules,element type,treatment of contact and friction etc.The mechanical performance parameters of SPCN material obtained according the experiment.Established the molds in CATIA and simulated with the software called KMAS,then measured the thickness value of practical pressing part compareing with simulative thickness value,and it is proved that the simulative result is reliability.2.Use different value of radius of die,through the simulation it can obtain the influence trend of radius of die which to stamping forming of the crossbeam of automobile.3.By using different value of Z to obtain the influence to stamping forming of the crossbeam of automobile.4.It has been proved that choosing the different value of friction and blank holder force(BHF) also influence the stamping forming of the crossbeam of automobile strongly.5.Select thicking ratio as the test target,the four parameters as influence factor,with the combination of orthogonal test and square analysis,finally confirmed the influence order of the four parameters,at the same time,obtained the best combination of parameters of stamping forming of crossbeam for automobile,Ultimately finished the optimization of parameters which brings Very important action to the practical stamping forming process.