航空发动机叶片冲击耗散能对机匣包容能力的影响研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (12) : 322-330.

航空航天

航空发动机叶片冲击耗散能对机匣包容能力的影响研究

曹铁男1，杨治中1，王靖元1，燕吉强2，张代军2

作者信息 +

Effects of impact dissipated energy of aero-engine blades on casing containment capacity

CAO Tienan1, YANG Zhizhong1, WANG Jingyuan1, YAN Jiqiang2, ZHANG Daijun2

Author information +

文章历史 +

摘要

面向航空发动机机匣包容精细设计需求，研究飞失过程中叶片耗散能对机匣包容性的影响规律。结合打靶试验及有限元数值仿真，对以TC4靶板为对象的机匣包容原理模拟件进行研究，揭示了机匣包容能力对叶片冲击耗散能的敏感性，验证了数值分析方法的准确性和合理性。基于建立的简化风扇模型，明确了机匣包容不同阶段中叶片—机匣能量转化机制，分析了叶片与机匣碰撞过程中机匣包容能力对叶片材料主要参数的敏感性。结果表明：叶片在冲击、碰撞过程产生的耗散能对机匣包容能力有着明显的影响，在工程设计中可考虑通过改善叶片材料延伸率和硬化系数以及降低弹性模量等途径提升机匣的包容能力。

Abstract

For the requirements of fine design of aero-engine casing, the influence of blade dissipated energy on casing containment in the process of blade loss was studied. Combined with ballistic impact test and finite element numerical simulation, the TC4 target plate, regarded as principle simulated component of casing containment, was researched. The sensitivity of casing containment capacity to blade impact dissipated energy was revealed, and the accuracy and rationality of the numerical analysis method were verified. Based on the established simplified fan model, the energy conversion mechanism of blade-casing in different stages of casing containment was clarified, and the sensitivity of casing containment capacity to the major parameters of blade material during the collision between blades and casing was analyzed. The results show that the blade dissipated energy during impact and collision has a significant effect on the containment capacity of the casing, and it can be considered to improve the containment capacity of casing by enhancing the elongation, improving the hardening coefficient, and reducing the elastic modulus of blade material in engineering design.

导出引用

曹铁男1, 杨治中1, 王靖元1, 燕吉强2, 张代军2. 航空发动机叶片冲击耗散能对机匣包容能力的影响研究[J]. 振动与冲击, 2024, 43(12): 322-330

CAO Tienan1, YANG Zhizhong1, WANG Jingyuan1, YAN Jiqiang2, ZHANG Daijun2. Effects of impact dissipated energy of aero-engine blades on casing containment capacity[J]. Journal of Vibration and Shock, 2024, 43(12): 322-330

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