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数值模型在创新的RTH液压成型技术中用于设计单元工具几何形状的应用。

Application of the Numerical Model to Design the Geometry of a Unit Tool in the Innovative RTH Hydroforming Technology.

作者信息

Sadłowska Hanna, Kochański Andrzej, Czapla Magdalena

机构信息

Faculty of Production Engineering, Warsaw University of Technology, 00-661 Warszawa, Poland.

出版信息

Materials (Basel). 2020 Nov 28;13(23):5427. doi: 10.3390/ma13235427.

DOI:10.3390/ma13235427
PMID:33260617
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7729476/
Abstract

The article presents a newly patented rapid tube hydroforming (RTH) manufacturing method, perfectly suited to single-piece production. The RTH technology significantly complements the scope of hydroforming processes. Due to the unusual granular material of the die tool, in particular moulding sand or mass, the process design requires the use of numerical modelling calculations. This is related to the complexity and the synergistic effect of process parameters on the final shape of the product. The work presents the results of numerical modelling studies of the process, including the behaviour of the die material and the material of the hydroformed profile. The numerical calculations were performed for a wide range of parameters, and can be used in various applications. The significant properties of moulding material used for the RTH tests were determined and one was chosen to build the die in RTH experiments. The results of the numerical modelling were compared with the results of the experiments, which proved their high compatibility. The final conclusions of the analyses indicate that the RTH technology has many possibilities that are worth further development and research.

摘要

本文介绍了一种新获得专利的快速管材液压成形（RTH）制造方法，该方法非常适合单件生产。RTH技术显著补充了液压成形工艺的范围。由于模具工具使用了特殊的粒状材料，特别是型砂或块状材料，因此工艺设计需要使用数值模拟计算。这与工艺参数对产品最终形状的复杂性和协同效应有关。本文展示了该工艺的数值模拟研究结果，包括模具材料和液压成形型材材料的行为。针对广泛的参数进行了数值计算，这些计算可用于各种应用。确定了用于RTH测试的成型材料的显著特性，并选择了一种材料用于RTH实验中的模具制造。将数值模拟结果与实验结果进行了比较，结果证明了它们的高度兼容性。分析的最终结论表明，RTH技术有许多值得进一步开发和研究的可能性。

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本文引用的文献

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A Novel Approach to Predict Wrinkling of Aluminum Alloy During Warm/Hot Sheet Hydroforming Based on an Improved Yoshida Buckling Test.一种基于改进吉田屈曲试验预测铝合金温/热板液压成形过程中起皱的新方法。
Materials (Basel). 2020 Mar 5;13(5):1165. doi: 10.3390/ma13051165.
2
Prediction of Burst Pressure in Multistage Tube Hydroforming of Aerospace Alloys.航空航天合金多级管材液压成形中爆破压力的预测
J Eng Gas Turbine Power. 2016 Aug;138(8):0821011-821015. doi: 10.1115/1.4032437. Epub 2016 Mar 8.