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为了对管件在不同加载路径下的成形情况及变形规律进行预测,达到降低管件缩径工艺的开发成本及试验费用的目的,基于ABAQUS非线性有限元软件对管件缩径工艺进行数值模拟,通过实验结果与仿真分析结果的对比,验证了有限元模型的正确性,以此为基础,分析了不同摩擦系数以及模具进给速度对缩径管件成形效果的影响。研究结果表明,摩擦系数及加载速度对管件的塑性变形影响明显,摩擦系数为0.15或0.2、加载速度为70 mm·s-1时管件的成形效果较好,不易出现塑性失稳及材料堆积,为管件的缩径工艺的工程化应用提供了有益的参考。
In order to predict the forming condition and deformation law of the pipe under different loading paths and achieve the purpose of reducing the development cost and testing cost of the pipe diameter reducing process, numerical simulation of the pipe shrinking process based on ABAQUS nonlinear finite element software was carried out. Through experiments The results are compared with the results of simulation analysis. The correctness of the finite element model is verified. Based on this, the influence of different friction coefficient and die feed speed on the forming effect of shrinking tube is analyzed. The results show that the friction coefficient and loading speed have a significant influence on the plastic deformation of the pipe, the friction coefficient is 0.15 or 0.2, the forming effect of the pipe is good when the loading speed is 70 mm · s-1, and the plastic instability and material accumulation are not easy to occur. It provides a useful reference for the engineering application of the pipe diameter reducing process.