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    张小兵, 龙士国. 基于动力显式算法的镍镀层钢带成形模拟[J]. 机械工程材料, 2007, 31(12): 83-86.
    引用本文: 张小兵, 龙士国. 基于动力显式算法的镍镀层钢带成形模拟[J]. 机械工程材料, 2007, 31(12): 83-86.
    ZHANG Xiao-bing, LONG Shi-guo. Simulation of Formation of Nickel Coated Steel Sheet Based on Dynamic Explicit Method[J]. Materials and Mechanical Engineering, 2007, 31(12): 83-86.
    Citation: ZHANG Xiao-bing, LONG Shi-guo. Simulation of Formation of Nickel Coated Steel Sheet Based on Dynamic Explicit Method[J]. Materials and Mechanical Engineering, 2007, 31(12): 83-86.

    基于动力显式算法的镍镀层钢带成形模拟

    Simulation of Formation of Nickel Coated Steel Sheet Based on Dynamic Explicit Method

    • 摘要: 利用LS-DYNA软件采用实体单元及动力显式算法模拟了镍镀层钢带深冲成形过程.板料与模具之间采用主从面对算法,摩擦力服从库仑摩擦定律,界面结合采用固连断开接触模型.结果表明:镀层与基体在深冲成形过程中不会出现界面失效,基体与镀层应力-应变分布以及材料流动规律大致相同,但镀层的应力-应变分布情况更复杂,表现为个别地方分布的不均匀;同时通过改变板料与模具间的摩擦因数,可减小摩擦有利于材料成形性能的改善.

       

      Abstract: The simulation of the deep-drawing of nickel coated steel sheet based on solid element and dynamic explicit method was performed.The master surface-slave surface searching algorithms were used between sheet and tools and the frictional forces were subject to Coublomb′s law.The interface conjunction used Contact-Tied-Surface To-Surface model and interfacial bond strength was defined.The results of the simulation illustrated that the steel sheet and the nickel coating do not delaminate in their interface.The stress-strain field and the material flow of the substrate and coating are similar.However the field of the nickel coating is more complicated than that of the steel sheet,which showed that the stress-strain distributesd non-homogeneously at some places.Through changing the friction coefficient between the sheet and the dies,the simulation results show that the forming performance of the sheet is improved if the friction coefficient was decreased.

       

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