动密封用Ni基合金斜圈弹簧的变形行为及回弹力模拟

余煜玺; 张伟彬; 孙轶; 丛明辉; 朱建; 宋经远

doi:10.7527/S1000-6893.2021.25527

航空学报 >

2022 , Vol. 43 >Issue 7: 425527 - 425527

DOI: https://doi.org/10.7527/S1000-6893.2021.25527

材料工程与机械制造

动密封用Ni基合金斜圈弹簧的变形行为及回弹力模拟

余煜玺 ,
张伟彬 ,
孙轶 ,
丛明辉 ,
朱建 ,
宋经远

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1. 厦门大学材料学院, 厦门 361005;
2. 中国航发沈阳发动机研究所, 沈阳 110015

收稿日期: 2021-03-18

修回日期: 2021-05-20

网络出版日期: 2021-05-20

基金资助

国家自然科学基金(51675452);装备预研与航天科技联合基金(6141B061012)

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Simulation analysis of deformation behavior and resilience of Ni-based alloy canted coil spring for dynamic seal

YU Yuxi ,
ZHANG Weibin ,
SUN Yi ,
CONG Minghui ,
ZHU Jian ,
SONG Jingyuan

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1. College of Materials, Xiamen University, Xiamen 361005, China;
2. AECC Shenyang Engine Research Institute, Shenyang 110015, China

Received date: 2021-03-18

Revised date: 2021-05-20

Online published: 2021-05-20

Supported by

National Natural Science Foundation of China (51675452); Joint Fund for Equipment Pre-Research and Aerospace Science and Technology (6141B061012)

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摘要

再入式飞行器控制面及冲压发动机主要运用动密封结构进行密封,斜圈弹簧作为动密封结构的回弹性元件,采用Inconel X-750时效强化的Ni基合金制成,为动密封结构提供回弹力以补偿间隙变化,是影响动密封性能的一项重要因素。为研究斜圈弹簧的变形行为及回弹力,先通过参数方程对斜圈弹簧进行参数化建模,而后基于ANSYS有限元分析软件对斜圈弹簧进行结构静力学的模拟计算,讨论斜圈弹簧各结构参数对斜圈弹簧回弹力的影响。通过有限元模拟分析的结果与常温测试实验结果进行对比,两者之间回弹力-压缩量曲线基本一致,证明有限元模拟分析是可靠的。模拟结果表明,斜圈弹簧在压缩弹簧高度50%的压缩过程中,增加斜圈弹簧的高度、宽度及倾斜程度,斜圈弹簧的回弹力表现出降低的趋势;增加节距和线径可使回弹力增加,且线径与回弹力表现为高阶非线性关系;温度通过影响Inconel X-750的弹性模量从而影响斜圈弹簧的回弹力。

关键词： 斜圈弹簧; 有限元分析; 参数化建模; Inconel X-750; 回弹力

本文引用格式

余煜玺 , 张伟彬 , 孙轶 , 丛明辉 , 朱建 , 宋经远 . 动密封用Ni基合金斜圈弹簧的变形行为及回弹力模拟[J]. 航空学报, 2022 , 43(7) : 425527 -425527 . DOI: 10.7527/S1000-6893.2021.25527

Abstract

The sealing section of the reentry aircraft control surface and ramjet is mainly sealed by the dynamic sealing structure. As an important factor affecting the dynamic sealing performance of the sealing structure, the canted coil spring is used as the resilient element of the dynamic sealing structure to provide resilience to compensate for gap changes, and is made of the age-strengthened Ni-based alloy Inconel X-750. To study the force and deformation behavior of the canted coil spring, a parametric modeling of the spring was established by the parametric equation. The structural static simulation of the spring was carried out by the finite element analysis software ANSYS, and the influence of the structural parameters of the spring on the spring's force was discussed. A comparison of the results of the simulation analysis with the test results at room temperature shows that the force-compression curve between them is almost the same, proving the reliability of the finite element simulation analysis. In compressing the canted coil spring to 50% of its height, The simulation results show that, the force of the canted coil spring tends to decrease with the increase of the height, width and cant amplitude, while the force increases with the increase of the pitch and wire diameter. The relationship between the force and wire diameter shows a high-order nonlinear relationship. The temperature affects the resilience of the spring by affecting the elasticity modulus of Inconel X-750.

Key words： canted coil spring; finite element analysis; parametric modeling; Inconel X-750; resiliencehttp

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