Process Modeling In Cold Forging Considering The Process‐Tool‐Machine Interactions
Process Modeling In Cold Forging Considering The Process‐Tool‐Machine Interactions
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DOI：
10.1063/1.3457568
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发表时间：
2010-06
期刊：
影响因子：
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通讯作者：
T. Kroiß;U. Engel;M. Merklein
中科院分区：
文献类型：
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作者：
T. Kroiß;U. Engel;M. Merklein
本文提出了一种用于行程控制压力机和模具系统的整个系统的轴向偏转特性的确定和建模的方法。这是实现实验和有限元模拟相结合。在实验中测量到了独特的压力特性。模具系统的特点是确定在有限元模拟，以避免各种模具系统的实验研究。压力机和模具系统的刚度被组合成替代刚度，该替代刚度作为弹簧单元被集成到有限元过程模拟中。压力机的非线性初始效应采用恒定的偏移因子进行建模。该方法被应用于一个完整的正挤压过程中的压力机与C-帧。实验结果与综合有限元仿真模型结果的比较表明，有限元模型的精度较高。该模型具有完整的变形特性，能够反映整个过程的行为，可用于控制和分析。
In this paper, a methodic approach is presented for the determination and modeling of the axial deflection characteristic for the whole system of stroke‐controlled press and tooling system. This is realized by a combination of experiment and FE simulation. The press characteristic is uniquely measured in experiment. The tooling system characteristic is determined in FE simulation to avoid experimental investigations on various tooling systems. The stiffnesses of press and tooling system are combined to a substitute stiffness that is integrated into the FE process simulation as a spring element. Non‐linear initial effects of the press are modeled with a constant shift factor. The approach was applied to a full forward extrusion process on a press with C‐frame. A comparison between experiments and results of the integrated FE simulation model showed a high accuracy of the FE model. The simulation model with integrated deflection characteristic represents the entire process behavior and can be used for the c...