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Abstract：
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The technique of numerical simulation in forming automobile covering parts and designing the moulds plays an important role.The technique of numerical simulation is comprehensively used,which can dramatically help mould designers to reduce the development time of the die,the periodic time of debugging the die and the cost.So this paper particularly introduces the general step of simulation about covering parts forming by using Dynaform software.Taking the drawing process of a certain automobile covering part as an example,the numerical simulation of forming process is achieved.By the analysis of the movement of the die,the forming of the blank,the change of the thickness of the blank,the distribution of the stress and strain and the forecast of forming limit,the impact of the shape of the blank,the layout of the drawbead and the value of the binder force on the quality of the automobile covering part is clarified.On the basis of analyzing a typical case,the corresponding programs which can optimize the forming plan and mould design for solving wrinkle problem that may appear in drawing process of the blank of covering parts are also presented in this paper.
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AuthorIntro：
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Reference：
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