Containment of soft wall casing wrapped with Kevlar fabric

He, Zekan; Hu, Xuan; Bai, Conger; Song, Manli; Zhu, Zhuoshen

doi:10.1016/j.cja.2019.01.008

Cited by 16 publications

(6 citation statements)

References 14 publications

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“…The J-C model parameters of the two components are listed in Table 7. The detail information for the values of J-C model parameters can be found in our previous work [29].…”

Section: Materials Modelmentioning

confidence: 99%

Neck Structure Optimal Design of the Turbine Wheel for Containment Design of the Air Turbine Starter

Chen,

Xuan,

Jia

et al. 2023

Aerospace

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The airworthiness standards of the transport category airplanes stipulate that the high energy rotor equipment must be of the sufficient containment capacity. It is of great importance to study the containment and weight reduction for the air turbine starter. In this paper, based on an OSF design, Kriging response surface model and MOGA algorithm, a neck structure optimal design method was proposed for the air turbine wheel. Using the optimal design method, the optimal structural parameters were suggested as the design parameters, and verified by the over-speed burst test. The maximum errors of the burst speeds between the experimental and design values are less than 2%, and the neck structure turbine wheel breaks in the neck as expected, validating the accuracy of the optimal design method. Then, the effects of turbine wheel burst modes on the containment were investigated quantitatively, and verified by the containment tests. Based on the experimental and simulation results, the containment design method was proposed for the neck structure turbine wheel. The results show that compared with the trisection wheel burst, the rim burst dramatically decrease the mass and initial kinetic energy of burst released fragments by 63.3% and 24.8%, thereby greatly reducing the thickness and the mass of the containment ring by 29.5% and 29.1%.

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“…The J-C model parameters of the two components are listed in Table 7. The detail information for the values of J-C model parameters can be found in our previous work [29].…”

Section: Materials Modelmentioning

confidence: 99%

Neck Structure Optimal Design of the Turbine Wheel for Containment Design of the Air Turbine Starter

Chen,

Xuan,

Jia

et al. 2023

Aerospace

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“…6 Composite materials are increasingly being used in engine casings due to their high specific strength and stiffness, as well as their ability to be tailored to specific design requirements. 7 The selection of materials for engine casings is critical to ensuring the safety and reliability of aviation operations. The design and materials must be able to withstand the complex loading conditions, especially in the case of Fan Blade Out (FBO) situation.…”

Section: Introductionmentioning

confidence: 99%

“…The aero‐engine case is typically constructed from a variety of high‐performance materials, such as titanium alloys, steel, and composite materials 6 . Composite materials are increasingly being used in engine casings due to their high specific strength and stiffness, as well as their ability to be tailored to specific design requirements 7 . The selection of materials for engine casings is critical to ensuring the safety and reliability of aviation operations.…”

Section: Introductionmentioning

confidence: 99%

High‐velocity impact resistance and energy absorption behavior of Carbon‐Kevlar hybrid composite laminates

Sun,

Wang,

Zhao

et al. 2023

Polymer Composites

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This study investigated the high‐velocity impact behavior of composite plates with different hybrid ratios and structural configurations through experimental and numerical simulation studies. The results showed that the critical penetration velocity of the composite plate generally increases with an increase in the volume fraction of aramid fibers. The high‐velocity impact finite element model developed in this study accurately simulated the high‐velocity impact behavior of laminated fiber composite plates with various hybrid ratios and different structures. The impact failure patterns of the plates were analyzed, and it was observed that the carbon fibers on the back face were prone to tensile fracture, followed by the gradual fracture of aramid fibers. The numerical simulation results show significant differences in residual impact velocity and energy absorption when impacted from different sides and the impact from the aramid side resulted in better energy absorption, which is contrary to the findings in many existing research papers. These findings provide valuable insights into the impact resistance of composite materials and can guide the design and development of high‐performance composite structures for aero‐engine case designing.Highlights The high‐velocity impact behavior of C/K fiber epoxy resin matrix composite laminates are studied. The critical penetration velocity increases with the increase of aramid fiber volume fraction. The laminate absorbs most of the impact energy during the instantaneous impact time. Energy absorption ability is better when the impact surface is aramid fibers. Carbon fibers on the back side of the laminate are more prone to tensile fracture.

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“…5 Among the simulations using finite elements are the so-called explicit dynamics simulations with large deformations, which can model two or more objects that can strike each other, considering the interaction of high energy levels and strain rates, such as the impact of a car against a wall, the impact between two cars, the detachment of material in a machining process, [6][7][8][9] the deformation and fracture of tensile test pieces, [10][11][12] impact tests, [13][14][15][16][17][18] and others. In the aeronautics industry, such simulations have enabled non-destructive tests to be performed on the new aircraft engine models that have been developed, such as the blade containment test [19][20][21][22][23][24][25] and the bird strike test. [26][27][28] There are different constitutive models to predict the viscoelastic behavior of materials.…”

Section: Introductionmentioning

confidence: 99%

Dynamic numerical prediction of plasticity and damage in a turbofan blade containment test

Sepúlveda

Valle

Pincheira

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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For the light designs of new aircraft engines, constitutive plasticity and fracture models sensitive to strain rate and temperature are essential for the accurate prediction of deformations and internal stresses of the components during simulations of impact and explosion events. The work described in this article consists of the development and numerical analysis by finite elements of the blade containment test of a commercial aircraft turbofan engine, conducted to evaluate the structural integrity of the casing after being impacted by a detached fan blade. Two simulation models of the test are proposed, in which the resistance behavior of the strain rate-dependent material is described by isotropic laws of strain hardening and Johnson–Cook damage. The strength analysis is based on the numerical field results of equivalent stresses and deformations, along with the internal damage rates of the casing. The first simplified model considers half of the casing impacted by a blade at different speeds and angles of impact. The second model consists of a complete discretization of casing and rotating turbofan, with the initial detached condition of a blade simulated at different rotating speeds of the fan. The material used in this study is the Ti-6Al-4V alloy. The results analysis and advances obtained make it possible to approach an efficient computational tool with more accurate calculations to study a casing redesign with a safe reduction in mass and that fulfills the certification requirements using the blade containment test.

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Containment of soft wall casing wrapped with Kevlar fabric

Cited by 16 publications

References 14 publications

Neck Structure Optimal Design of the Turbine Wheel for Containment Design of the Air Turbine Starter

Neck Structure Optimal Design of the Turbine Wheel for Containment Design of the Air Turbine Starter

High‐velocity impact resistance and energy absorption behavior of Carbon‐Kevlar hybrid composite laminates

Dynamic numerical prediction of plasticity and damage in a turbofan blade containment test

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