Research on centrifugal compressor disk containment of auxiliary power unit

被引：8

作者：

Bai, Conger ^{[1
,3
]}

Xuan, Haijun ^{[1
,3
]}

He, Zekan ^{[1
,3
]}

Zou, Yushen ^{[1
,3
]}

Tang, Guang ^{[2
]}

Tang, Jin ^{[2
]}

机构：

[1] Zhejiang Univ, Coll Energy Engn, High Speed Rotating Machinery Lab, Hangzhou 310027, Zhejiang, Peoples R China

[2] China Aviat Powerplant Res Inst, Zhuzhou 412002, Peoples R China

[3] Collaborat Innovat Ctr Adv Aeroengine, Beijing 100083, Peoples R China

来源：

AEROSPACE SCIENCE AND TECHNOLOGY | 2017年 / 68卷

关键词：

Auxiliary power unit; Disk containment; Connecting bolt; Numerical simulation; Containment test;

D O I：

10.1016/j.ast.2017.05.002

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

To investigate the centrifugal compressor disk containment of auxiliary power unit (APU) in gas turbine, research on specific compressor is conducted in combination of simulations and tests. Nonlinear explicit finite element analysis of tri-hub fragments impacting containment assembly is carried out using LS-DYNA. Impacting characteristics in each period are discussed. Strength of the outer cover, the back shroud and the connecting bolts between them is further studied through simulation. The results show that the fragments interact with the outer cover and the back shroud both in rotating plane and axial direction. The internal energy is mostly composed of the strain energy of the impeller. Insufficient strength of each component leads to an uncontained result. Potential failure modes are discussed. Verification tests on high-speed spin tester revealing both contained and uncontained cases have been conducted and showed that the outer cover, the back shroud and the connecting bolts between them all play a significant role to containment. Adequate strength of these components is essential. Otherwise the outer cover will detach away and the back shroud will be damaged. (C) 2017 Elsevier Masson SAS. All rights reserved.

引用

页码：37 / 45

页数：9

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