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带复合热障涂层的转子-定子系统碰摩温度特性研究
Study on temperature characteristics of rub-impact in rotor-stator system with composite thermal barrier coating
Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science
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SAGE Publishing
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复合TBC转子碰摩热模型MAPE<2%
AI理解
要点 含复合TBC的钛合金转子-定子系统碰摩热生成与有限元模型：MAPE<2%，涂层厚度影响碰摩温度特性。
能不能用 TBC 在航空发动机中的应用仿真研究，对 TBC 减摩隔热设计有参考价值。摘要给出模型方法（MAPE<2%），但无涂层制备与工艺参数，属应用分析层面。
存疑
- 仿真模型研究，无工艺数据
- MAPE<2% 为特定工况验证，通用性需更多工况确认
中文摘要
碰摩是航空发动机钛合金转子-定子系统中最严重的失效形式之一。这种碰摩可导致局部高温，甚至引发钛火失效。为解决这一问题，热障涂层（TBCs）被广泛应用于转子-定子系统中的部件，以减轻碰摩的影响。基于傅里叶热传导定律和 Lankarani-Nikravesh 接触模型，提出了一种带复合涂层的钛合金转子-定子系统的新型热生成模型，并纳入复合涂层对接触刚度和分层热传导的影响。此外，采用动态温度-位移显式方法建立了转子-定子碰摩的有限元模型（FEM），考虑了热量分配和热间隙导纳。随后，分析了转子-定子系统中的碰摩温度特性，重点研究了复合涂层厚度变化的影响。所提出的热生成方法和有限元模型经实验验证，平均绝对百分比误差（MAPE）均小于2%。
查看英文摘要
Rub-impact is one of the most severe failures in titanium alloy rotor-stator systems of aero-engines. This rub-impact can lead to localized high temperatures and even trigger titanium fire failure. To address this issue, thermal barrier coatings (TBCs) are widely applied to components in the rotor-stator system to mitigate the effects of rub-impact. A novel heat generation model for titanium alloy rotor-stator systems with a composite coating is proposed based on Fourier’s law of heat conduction and the Lankarani-Nikravesh contact model, incorporating the effects of the composite coating on both contact stiffness and layered heat conduction. Furthermore, a finite element model (FEM) of rotor-stator rub-impact is developed using the dynamic temperature-displacement explicit method, accounting for heat allocation and thermal gap conductance. Subsequently, the rub-impact temperature characteristics in the rotor-stator system are analyzed, emphasizing the effect of composite coating thickness variations. The proposed heat generation method and finite element model are experimentally validated, both showing a mean absolute percentage error (MAPE) of less than 2%.
原文依据
查看原文依据
- A novel heat generation model for titanium alloy rotor-stator systems with a composite coating is proposed based on Fourier’s law of heat conduction and the Lankarani-Nikravesh contact model, incorporating the effects of the composite coating on both contact stiffness and layered heat conduction.
- Subsequently, the rub-impact temperature characteristics in the rotor-stator system are analyzed, emphasizing the effect of composite coating thickness variations.
- The proposed heat generation method and finite element model are experimentally validated, both showing a mean absolute percentage error (MAPE) of less than 2%.
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DOI: 10.1177/09544062261492024