Surface Design and Strength Analysis of Porous Linear Diaphragm

Kangkang Ding; Yinxin Yu; Yingxian Zhang

doi:10.16578/j.issn.1004.2539.2021.02.010

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Surface Design and Strength Analysis of Porous Linear Diaphragm

Design· Calculation | 更新时间：2022-11-10

- Surface Design and Strength Analysis of Porous Linear Diaphragm
- Journal of Mechanical Transmission Vol. 45, Issue 2, Pages: 63-68(2021)
- 作者机构：
  
  1.昆明理工大学机电工程学院，云南昆明 650500
  2.云南省先进装备智能制造技术重点实验室，云南昆明 650500
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2021.02.010
  CLC：
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丁康康,于印鑫,张颖娴.多孔式直线形膜盘型面设计与强度分析[J].机械传动,2021,45(02):63-68.

Ding Kangkang,Yu Yinxin,Zhang Yingxian.Surface Design and Strength Analysis of Porous Linear Diaphragm[J].Journal of Mechanical Transmission,2021,45(02):63-68.
丁康康,于印鑫,张颖娴.多孔式直线形膜盘型面设计与强度分析[J].机械传动,2021,45(02):63-68. DOI： 10.16578/j.issn.1004.2539.2021.02.010.

Ding Kangkang,Yu Yinxin,Zhang Yingxian.Surface Design and Strength Analysis of Porous Linear Diaphragm[J].Journal of Mechanical Transmission,2021,45(02):63-68. DOI： 10.16578/j.issn.1004.2539.2021.02.010.

摘要

现有柔性膜盘联轴器的膜盘类型中以钛合金曲面膜盘为主，由于膜盘厚度较薄，其曲面加工难度较大、精度要求高，为降低加工难度并保证膜盘具有较好的容差及负载能力，改进了一种多孔式直线形膜盘；利用有限元方法对其轴向刚度及在转矩、轴向偏差、角向不对中偏差、转速及复合工况下的应力和寿命进行了分析，并与其同直径的单曲面膜盘进行对比。研究表明，多孔式直线形膜盘的轴向刚度比同直径的单曲面膜盘小，刚度均呈非线性变化，刚度与膜盘厚度成正比；在轴向偏差、角向不对中偏差下，多孔式直线形膜盘应力低于单曲面膜盘，具有更好的容差能力；同等负载转矩下，多孔式直线形膜盘应力虽大于单曲面膜盘，但满足强度和寿命要求，且膜盘应力分布更加均匀。因此，多孔式直线形膜盘具备更高的容差性能，适用于高转速、低载荷和存在较大轴向及角向不对中偏差的工程环境中。

Abstract

Titanium alloy curvature diaphragm is the main diaphragm type of existing flexible diaphragm couplings. Due to its thin thickness， its difficult curved surface processing and requires high precision， a porous linear diaphragm is improved in order to reduce the processing difficulty and ensure the diaphragm has better tolerance and load capacity. The finite element method is used to analyze its axial stiffness， stress and durability under torque， axial deviation， angular misalignment deviation， rotating speed and composite working conditions， and compared it with the single-curvature diaphragm with the same diameter. The research shows that the axial stiffness of the porous linear diaphragm is smaller than that of the single-curvature diaphragm with the same diameter， which also shows nonlinear variation and is proportional to the thickness of the diaphragm. Under axial deviation and angular misalignment deviation， the stress is lower than that of the single-curvature diaphragm， thus having better tolerance capability. Under the same load torque， the stress is larger than that of the single-curvature diaphragm， but it meets the requirements of strength and durability， and the stress distribution of the diaphragm is more uniform. Therefore， the porous linear diaphragm has higher tolerance performance and is suitable for engineering environments with high rotating speed， low load and large axial and angular misalignment deviation.

关键词

膜盘联轴器膜盘型面多孔式直线形膜盘强度分析轴向刚度

Keywords

Diaphragm couplingDiaphragm surfacePorous linear diaphragmStrength analysisAxial stiffness

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