Tests and Numerical Analyses of the Composite Casing Containment Under Hydrothermal Environment

ZHENG Jingbo; ZHANG Ying; JIANG Wenlong; WEI Lin; CHI Xue; YI Wenzhao; LIU Lulu; CHEN Wei

doi:10.21656/1000-0887.450289

Volume 46 Issue 5

May 2025

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Article Navigation > Applied Mathematics and Mechanics > 2025 > 46(5): 661-675

ZHENG Jingbo, ZHANG Ying, JIANG Wenlong, WEI Lin, CHI Xue, YI Wenzhao, LIU Lulu, CHEN Wei. Tests and Numerical Analyses of the Composite Casing Containment Under Hydrothermal Environment[J]. Applied Mathematics and Mechanics, 2025, 46(5): 661-675. doi: 10.21656/1000-0887.450289

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Tests and Numerical Analyses of the Composite Casing Containment Under Hydrothermal Environment

doi: 10.21656/1000-0887.450289

1. Aero-Engine Thermal Environment and Structure Key Laboratory of Ministry of Industry and Information Technology, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China;
2. AECC Sichuan Gas Turbine Establishment, Chengdu 610599, P.R.China;
3. Yangzhou Pinghang Aviation Power Technology Co., Ltd., Yangzhou, Jiangsu 225100, P.R.China

Funds:

The National Science Foundation of China(52375150)

Received Date: 2024-10-28
Rev Recd Date: 2024-11-23

Available Online: 2025-05-30

Abstract

Abstract

To obtain the inclusion characteristics of carbon fiber resin matrix composite casing in service environment, 2 high-speed impact ballistic tests were conducted before and after hygrothermal treatment, and the corresponding simulation model for the casing hygroscopicity partition hygrothermal test simulation model along with the finite element high-speed impact numerical simulation-analysis model, was established. The results show that, the hygrothermal treatment has significant effects on the impact resistance and energy absorption capacity of the carbon fiber resin matrix composite casing. Under the high-speed impact, the impact resistance and energy absorption capacity of the casing without hygrothermal treatment are better than those of the casing with hygrothermal treatment. The damage form of the casing under high-speed impact is dominated by the tensile failure of fiber and matrix, accompanied by a certain amount of fiber crush and in-plane shear failure, with little or no compression failure observed. The damage occurs in the vicinity of the impact area, and extends along the axial and circumferential direction of the casing. In addition, the tensile failure area of the matrix of the hygrothermally treated layer is significantly larger than that of the matrix of the untreated layer, which verifies the degradation of the mechanical properties of the matrix after hygrothermal treatment.
- aero-engine,
- impact behavior,
- composite casing,
- hygrothermal treatment,
- ballistic impact test

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References(22)

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