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Finite element simulation of innovative manufacturing processes for tube fittings.

机译:管件创新制造工艺的有限元模拟。

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摘要

Tube fittings are widely used in the pressure vessel industry. Current research on tube fittings serves to determine means of decreasing the cost and increasing the efficiency of their manufacture. With this motivation, several new tube forming processes have been proposed in recent years. The current study focuses on the finite element simulation of two new manufacturing processes for tube fittings; i.e. hydroforming and tube push-bending.;For tube hydroforming, used to produce T and Y joints, there is a working range defined by the combination of internal pressure and axial load. To ensure that a satisfactory product is obtained, it is essential that the loading path be inside the working range. The working range for several tube hydroforming models are predicted, and the results are validated with existing theoretical and experimental values.;The new tube push bending process has the advantage that tube bends with a small bending radius can be produced. In this study, finite element simulations are carried out to demonstrate this advantage. The spring-back and material waste factors are determined through simulation, as well as the maximum axial load. The results obtained are validated against existing theoretical and experimental values.;The study ends with some conclusions about the suitability of finite element simulations in tube forming processes, and with some suggestions for further research.
机译:管件广泛用于压力容器行业。对管接头的当前研究用于确定降低成本和提高其制造效率的手段。出于这种动机,近年来已经提出了几种新的管成型工艺。当前的研究集中在两种新的管件制造工艺的有限元模拟上。即液压成形和管子弯曲-对于用于产生T型和Y型接头的管子液压成形,有一个工作范围是由内部压力和轴向载荷共同决定的。为了确保获得满意的产品,必须确保装载路径在工作范围内。预测了几种管液压成形模型的工作范围,并用现有的理论和实验值验证了结果。新的管推弯工艺具有可产生小弯曲半径的管弯的优点。在这项研究中,进行了有限元模拟以证明这一优势。回弹和材料浪费因素是通过仿真以及最大轴向载荷确定的。研究结果与现有的理论和实验值相吻合。研究结束时,对有限元模拟在管材成形过程中的适用性提出了一些结论,并提出了进一步研究的建议。

著录项

  • 作者

    Zhang, Yu.;

  • 作者单位

    University of Ottawa (Canada).;

  • 授予单位 University of Ottawa (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 M.A.Sc.
  • 年度 2008
  • 页码 114 p.
  • 总页数 114
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;
  • 关键词

  • 入库时间 2022-08-17 11:39:18

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