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Abstract：
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Preform design in forging processes is an important aspect for improving the forging quality and decreasing the production cost Forward and backward simulations of the forging process based on rigid\|viscoplastic FEM can directly provide a perform shape from the final forged shape at a given stage The objective of this effort is to reduce the material lost as flash by designing an improved operation In this thesis,the traditional processes of the track link forging are infroduced,some problems existed in the current track link forging are illustrated,and finally the applications of preform design theory and FEM forward and backward simulations in the track link forging are discussed.
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AuthorIntro：
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Reference：
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1 SKobayashi,SIOh,TAltanMetalformingandtheFiniteEle mentMethod.NewYork:OxfordUniversityPress,1989
2 YCShiau,SKobayashiThree-DimensionalFiniteElementAnaly sisofOpen-DieForging.InternationalJournalofNumericalMeth odsinEngineering,1988,25:6778
3 JJPark,NRebelo,SKobayashiANewApproachtoPreformDe signinMetalFormingwithFiniteElementMethod.InternationalJournalofMachineToolDesign&Research,1983,23:7179
4 SSLanka,RSrinivasan,RVGrandhiADesignApproachforIn termediateDieShapesinPlaneStrainForgings.JournalofMaterialsShapingTechnology,1991,9:193206
5 CSHan,RVGrandhi,RSrinivasanOptimumDesignofforgingProcessesUsingNonlinearFiniteElementAnalysis.AIAAJournal,1993,31:774781
6 GZhao,EWright,RVGrandhiPreformDesigninForgingPro cessesUsingNonlinearFiniteElementMethod.TransactionsofNAMRI/SME ,1994,22:1724
7 GZhao.EWright,RVGrandhiForgingPreformDesignUsingtheInverseDiecontactTrackingMethod.NUMIFORM’95,1995,95.
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