Cross-Scale Contact Interface Modeling and Modal Test Validation of Gas Turbine Tie-Bolt Rotors

WEN Siguo; LI Dehao; YU Peijiong; WEI Jiaming; LI Pu; YUAN Qi

doi:10.7652/xjtuxb202506014

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Cross-Scale Contact Interface Modeling and Modal Test Validation of Gas Turbine Tie-Bolt Rotors

更新时间：2025-08-26

- Cross-Scale Contact Interface Modeling and Modal Test Validation of Gas Turbine Tie-Bolt Rotors
- Journal of Xi’an Jiaotong University Vol. 59, Issue 6, Pages: 133-143(2025)
- 作者机构：
  
  1.西安交通大学能源与动力工程学院， 710049，西安
  2.杭州汽轮动力集团有限公司先进动力研究院， 310016，杭州
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202506014
  CLC： TK14
- Received：09 December 2024，
  
  Online First：24 February 2025，
  
  Published：10 June 2025
- 稿件说明：
移动端阅览
WEN Siguo, LI Dehao, YU Peijiong, et al. Cross-Scale Contact Interface Modeling and Modal Test Validation of Gas Turbine Tie-Bolt Rotors[J]. Journal of Xi’an Jiaotong University, 2025, 59(6): 133-143.
DOI：

WEN Siguo, LI Dehao, YU Peijiong, et al. Cross-Scale Contact Interface Modeling and Modal Test Validation of Gas Turbine Tie-Bolt Rotors[J]. Journal of Xi’an Jiaotong University, 2025, 59(6): 133-143. DOI： 10.7652/xjtuxb202506014.

摘要

针对燃气轮机拉杆转子接触界面刚度弱化和弧形端面齿磨轮加工与平面加工的统计差异性，提出了一种拉杆转子跨尺度接触界面建模方法，并分析了宏观几何参数和微观界面参数对界面效应的影响。首先，引入t Location-Scale分布表征弧形端面齿面微凸体高度分布，并基于实际弧形端面齿盘、齿面测量数据，印证了t Location-Scale分布的合理性和优越性；然后，建立了考虑材料完整变形过程的弧形端面齿跨尺度接触刚度模型，通过端面齿接触等效材料法，开展了某实际燃气轮机转子建模和模态分析；最后，开展了国内某周向拉杆重型燃气轮机转子模态敲击实验，对比传统统计学模型和未考虑接触效应仿真模型与实验结果，所提方法的仿真结果与真实结果吻合较好，前四阶模态的相对误差分别为2.61%、0.63%、0.03%和4.78%，误差相较于未修正前，分别提升了1.25%、2.92%、1.72%和1.55%。结果表明，所提方法对于弧形端面齿接触界面建模优于其他模型，为弧形端面齿周向拉杆转子提供了一种高效、准确的跨尺度建模方法。

Abstract

Aiming at the weakening of the contact interface stiffness of gas turbine tie rod rotor and the statistical difference between the curvic couplings grinding wheel and plane machining

a cross-scale contact interface modeling method of tie rod rotor is proposed

and the influence of macro-geometric parameters and micro-interface parameters on interface effects is analyzed. First

the t Location-Scale distribution was introduced to characterize the height distribution of the micro convex of the tooth surface of the curvic couplings

and the rationality and superiority of the t Location-Scale distribution was confirmed based on the actual measurement data of the tooth surface of the curvic couplings face. Then

the cross-scale contact stiffness model of curved end teeth considering the complete deformation process of the material was established. The rotor modeling and modal analysis of a real gas turbine were carried out by means of the equivalent material contact method with end teeth. Finally

a domestic rotor modal percussion experiment of a circular tie bar heavy-duty gas turbine was carried out. Compared with the traditional statistical model and the simulation model without considering the contact effect

the simulation results of the proposed method were in good agreement with the real results

and the relative errors of the first four modes were 2.61%

0.63%

0.03% and 4.78%

respectively. The error was increased by 1.25%

2.92%

1.72% and 1.55%

respectively. The results showed that the proposed method was superior to other models in modeling the contact interface of curvic couplings. Therefore

it has been proven as an efficient and accurate cross-scale modeling method for the circumferential tie rod rotors of curvic couplings.

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references

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