Containment of aero-engine casing with bolted flanges

CAO Zhenzhong; ZHANG Fan; ZHANG Dingguo; YU Yi

doi:10.7527/S1000-6893.2020.24563

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2021 , Vol. 42 >Issue 9: 224563 - 224563

DOI: https://doi.org/10.7527/S1000-6893.2020.24563

Solid Mechanics and Vehicle Conceptual Design

Containment of aero-engine casing with bolted flanges

CAO Zhenzhong ,
ZHANG Fan ,
ZHANG Dingguo ,
YU Yi

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1. School of Science, Nanjing University of Science and Technology, Nanjing 210094, China;
2. AECC Shenyang Engine Research Institute, Shenyang 110015, China

Received date: 2020-07-22

Revised date: 2020-08-06

Online published: 2020-08-25

Supported by

National Natural Science Foundation of China (11772158, 11502113)

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Abstract

To investigate the blade containment of casings with bolted flanges, finite element simulations and impact tests are carried out with the bolted flange structure cut from the whole casing. LS-DYNA is used to create the finite element models to study the effects of the impact angle, impact position, sleeve and rabbet on the impact resistance of the bolted casing flange structure. The simulation results reveal that the impact angle and impact position have remarkable influence on the impact resistance of the bolted casing flange structure, which is the weakest when the blade impacts on one side of the flange. Adding sleeves or proper rabbets in the bolted casing flange structure increases the impact its resistance. The accuracy and reliability of the simulation results are then validated by the impact resistance tests of the bolted casing flange structure. Analyses of the fracture process of the bolts based on simulation and test results reveal the origin of tensile and shear fractures among the bolts.

Key words： casings; bolted joints; containment; finite element simulation; impact resistance test

Cite this article

CAO Zhenzhong , ZHANG Fan , ZHANG Dingguo , YU Yi . Containment of aero-engine casing with bolted flanges[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021 , 42(9) : 224563 -224563 . DOI: 10.7527/S1000-6893.2020.24563

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