VSV调节机构的仿真提速和精度补偿措施

doi:10.7527/S1000-6893.2021.26034

固体力学与飞行器总体设计

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VSV调节机构的仿真提速和精度补偿措施

张宝振¹, 王汉平¹, 徐峰², 吴志青²

1. 北京理工大学宇航学院, 北京 100081;
2. 中国航发商用航空发动机有限责任公司, 上海 200241

收稿日期:2021-07-01 修回日期:2021-07-21 出版日期:2022-09-15 发布日期:2021-08-17
通讯作者: 王汉平,E-mail:whp161@bit.edu.cn E-mail:whp161@bit.edu.cn
基金资助:
国家科技重大专项(J2019-IV-0002-0069)

Simulation speed-up and accuracy compensation measures for adjusting mechanism of variable stator vane

ZHANG Baozhen¹, WANG Hanping¹, XU Feng², WU Zhiqing²

1. School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China;
2. AECC Commercial Aircraft Engine Co., Ltd, Shanghai 200241, China

Received:2021-07-01 Revised:2021-07-21 Online:2022-09-15 Published:2021-08-17
Supported by:
National Science and Technology Major Project (J2019-IV-002-0069)

摘要/Abstract

摘要： 可调静叶调节机构对提高燃气涡轮发动机喘振裕度具有重要作用。基于多体动力学理论和自开发参数化建模平台, 构建了考虑温度效应、尺寸误差、运动副间隙、非线性摩擦接触等复杂因素的五级联调刚柔耦合动力学模型。解析推导了轴-衬套法向非线性接触力表达式, 并验证了采用不同法向接触力模型对仿真结果的影响不足2.198%;通过简化建模单元、向求解器提供力元对状态变量的偏导数, 在确保刚柔耦合动力学模型计算精度的前提下, 使得计算效率最大可提升24.56%;基于有限差分法, 求解了可调静叶调节机构的阻滞力、角度调节精度对部分参数的局部灵敏度, 据此提出了改善机构性能的补偿措施, 并通过动力学仿真验证了补偿措施的有效性。

关键词: 调节机构, 刚柔耦合动力学, 计算效率, 局部灵敏度, 阻滞力, 角度调节精度

Abstract: The adjusting mechanism of variable stator vane plays an important role in improving the surge margin of the gas turbine engine. Based on the multibody dynamics theory and self-developed parametric modeling platform, a five-stage rigid-flexible coupling dynamic model with complex factors such as temperature effect, dimensional error, moving pair clearance, and nonlinear friction contact, is constructed. The expression of the shaft-bushing normal nonlinear contact force is analytically deduced, and it is verified that the influence of different normal contact force models on the simulation results is less than 2.198%. By simplifying the configuration of the dynamic model, and providing the solver with the partial derivative of the force element with respect to the state variable, the calculation efficiency is increased by 24.56% at the maximum on the premise of ensuring the calculation accuracy of the rigid-flexible coupling dynamics model. Based on the finite difference method, the blocking force and angle adjustment accuracy of the adjustable stator blade adjustment mechanism are solved for some parameters. And based on the local sensitivity, the compensation measures to improve the performance of the mechanism are proposed, and the rationality of the compensation measures is verified through dynamic simulation.

Key words: adjusting mechanism, rigid-flexible coupling dynamics, computational efficiency, local sensitivity, retarding force, angle adjustment accuracy

中图分类号:

V233.95

张宝振, 王汉平, 徐峰, 吴志青. VSV调节机构的仿真提速和精度补偿措施[J]. 航空学报, 2022, 43(9): 226034.

ZHANG Baozhen, WANG Hanping, XU Feng, WU Zhiqing. Simulation speed-up and accuracy compensation measures for adjusting mechanism of variable stator vane[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(9): 226034.

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E-mail：hkxb@buaa.edu.cn

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VSV调节机构的仿真提速和精度补偿措施

Simulation speed-up and accuracy compensation measures for adjusting mechanism of variable stator vane

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