预应力钢丝缠绕“正交预紧机架”刚度比计算方法研究

王文杰, 张磊, 林峰

王文杰, 张磊, 林峰. 预应力钢丝缠绕“正交预紧机架”刚度比计算方法研究[J]. 工程力学, 2016, 33(3): 214-221,247. DOI: 10.6052/j.issn.1000-4750.2014.07.0647
引用本文: 王文杰, 张磊, 林峰. 预应力钢丝缠绕“正交预紧机架”刚度比计算方法研究[J]. 工程力学, 2016, 33(3): 214-221,247. DOI: 10.6052/j.issn.1000-4750.2014.07.0647
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WANG Wen-jie, ZHANG Lei, LIN Feng. STIFFNESS RATIO CALCULATION METHOD RESEARCH FOR PRESTRESSED WIRE-WOUND ORTHOGONAL PRELOAD FRAME[J]. Engineering Mechanics, 2016, 33(3): 214-221,247. DOI: 10.6052/j.issn.1000-4750.2014.07.0647
Citation: WANG Wen-jie, ZHANG Lei, LIN Feng. STIFFNESS RATIO CALCULATION METHOD RESEARCH FOR PRESTRESSED WIRE-WOUND ORTHOGONAL PRELOAD FRAME[J]. Engineering Mechanics, 2016, 33(3): 214-221,247. DOI: 10.6052/j.issn.1000-4750.2014.07.0647
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预应力钢丝缠绕“正交预紧机架”刚度比计算方法研究

  • 清华大学机械工程系, 北京 100084

基金项目: 国家科技重大专项项目(2012ZX04010082);国家863计划项目(2012AA040202)
详细信息
    作者简介:

    王文杰(1985-),男,河南人,博士生,主要从事重型锻压设备设计与优化研究(E-mail:wangwenjiedlut@163.com);张磊(1977-),男,北京人,副研究员,博士,主要从事重型锻压设备、生物制造研究(E-mail:stoneszhang@tsinghua.edu.cn).

    通讯作者:

    林峰(1966-),男,北京人,教授,博士,主要从事重型液压机、快速成形、生物制造研究(E-mail:linfeng@tsinghua.edu.cn).

  • 中图分类号: TG315

STIFFNESS RATIO CALCULATION METHOD RESEARCH FOR PRESTRESSED WIRE-WOUND ORTHOGONAL PRELOAD FRAME

  • Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China

摘要

    摘要
  • 摘要: 刚度比是计算钢丝缠绕工艺中钢丝理论施加张力、分析预应力钢丝缠绕机架合成状态受力状况及其疲劳强度的重要参数。但是,由于预应力钢丝缠绕正交预紧机架的立柱由两段梯形和一段扇形组成,解析法难以对其刚度比进行直接求解。针对此问题,提出一种有限元方法求取预应力钢丝缠绕正交预紧机架的刚度比,通过普通预应力钢丝缠绕机架刚度比经典解析法与有限元方法的对比分析以优化该方法,利用40 MN多向模锻压机的钢丝缠绕工艺试验验证该方法求取正交预紧机架刚度比的可行性。结果表明:该方法求得的刚度比值进行钢丝缠绕工艺之后,正交预紧机架立柱各截面的平均实际缠绕预紧力与理论值接近,刚度比值完全可以满足实际工程需求。
    Abstract: Stiffness Ratio is an important parameter for a prestressed wire-wound frame in analyzing wire theory tension in wire-wound technique, in the force and deformation conditions, and in the state of the synthesis and fatigue strength. However, a prestressed wire-wound orthogonal preload frame column is composed of two trapezoids and one sector, it is thusly difficult to solve the stiffness ratio of a prestressed wire-wound orthogonal preload frame by using analytical methods. Focus on this problem, we propose a finite element method to calculate the stiffness ratio, and optimize the finite element method by the comparison with the classical analytical method and the finite element method of the ordinary pre-stressed wire-wound frame. We use the wire-wound technology experiment of 40MN multi-ram forging hydraulic press to verify the feasibility of the finite element method to calculate a stiffness ratio. The result of experiment proves that the average actual preloaded force of a frame column section, which was obtained with the stiffness ratio by the finite element method, is close to its theoretical value. Further, the result proves the stiffness ratio can completely meet the practical demand of engineering.
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    • 参考文献(16)
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出版历程
  • 收稿日期:  2014-07-23
  • 修回日期:  2015-03-19
  • 刊出日期:  2016-03-24

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