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

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (12) : 322-330.

AERONAUTICS AND ASTRONAUTICS

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

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

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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.

Key words

casing containment / blade dissipated energy / mode of damage / constitutive parameter

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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

References

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