Crashworthiness study of a keel beam structure

Xue, Pu; Qiao, C F; Yu, Tongxi

doi:10.1016/j.ijmecsci.2009.11.011

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…A first example of crashworthiness design has been attempt when the U.S. Army decided to improve its helicopters crash survivability during the conflict in Southeast Asia. The initial studies were focused only on the optimal design of specific energyabsorbing components [8][9][10][11][12], while the whole aircraft/helicopter structure crashworthiness investigation is still very limited nowadays. To understand the energy dissipation mechanism in a crash event and to obtain effective designs, specific and advanced numerical tools and methods are needed whose main aim is to correctly mimic the structural complex behaviour and to integrate the expensive experimental tests [13].…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study on Multi-Terrain Impacts of an Aeronautical Fuselage Section

Riccio

Saputo

Cristiano

et al. 2018

KEM

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This paper investigates the crashworthiness of a metallic fuselage section. Crashworthiness can be generally described as the ability of a structure to protect its occupants during an impact event. In this paper, the mechanical behaviour of metallic fuselage structures during the crash is simulated by means of the FE code ABAQUS/Explicit. Two different impact terrains have been considered: impact on a rigid surface and ditching on water. The numerical results, in terms of deformation, energy absorption, equivalent stress evolution, and damage onset and propagation have been assessed and compared.

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Section: Introductionmentioning

confidence: 99%

A Numerical Study on Multi-Terrain Impacts of an Aeronautical Fuselage Section

Riccio

Saputo

Cristiano

et al. 2018

KEM

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“…In fact, fully integrated crashworthy designs had been limited to a few agricultural aircrafts until the U.S. Army committed itself to improving the crash survivability of its helicopters during the conflict in Southeast Asia. Many of the former studies focused on the optimal design of energy-absorbing components (Jones, 2010;Ramakrishna, 1998;Taher, 2006;Xua 2009;Xue 2009), while crashworthiness study for whole aircraft structure is limited. Considering the complexity of the aircraft structure and its experiment cost, numerical simulation has become an effective tool in studying the crashworthiness of aircraft structures.…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness study of a civil aircraft fuselage section

Xue

Ding

Qiao

et al. 2014

Lat. Am. j. solids struct.

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This paper studies the crashworthiness characteristics of a fuselage section and its improvement. A full-scale three-dimensional finite element model of the fuselage section is developed using a nonlinear finite element code, PAM-CRASH. The simulation is implemented to determine the structural deformation and impact response in terms of peak loads and acceleration peaks at the floorlevel, deformation mode, energy absorption, and structural integrity, and then to assess the crashworthiness of the fuselage section. By partitioning the total energy dissipated, it is shown that the frames and the supports of the cargo floor play important roles in the process of energy dissipation. Based on the results, an effective approach to improve the crashworthiness of the fuselage section is presented. The paper also provides an in-depth analysis in the deformation mechanism of the fuselage section under a vertical crash, which will be helpful to effectively prevent the cabin floor from heavily damage and maintain the integrity of the fuselage section.

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“…Ren and Xiang [16,17] investigated the effects of physical and geometrical parameters of the cabin floor strut on the crashworthiness of civil aircraft fuselage. The cargo floor and the keel beam can also be designed to improve the crashworthiness [20,21].…”

Section: Introductionmentioning

confidence: 99%

Crash simulation of the fuselage section with central wing box for a regional jet

Wang

et al. 2013

International Journal of Crashworthiness

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2013) Crash simulation of the fuselage section with central wing box for a regional jetA 3-D model of a regional jet fuselage section with central wing box (CWB) was developed for vertical drop crash simulation. The two wings were modelled with a dynamically equivalent system comprising beam and lumped-mass element. Four crashes with differ falling velocity were simulated in the explicit transient-dynamics finite-element code MSC.Dytran, respectively. The acceleration at seat rail is greatly higher than that of the typical fuselage section of the same plane. At high falling velocity, the crash process consists of two impact events due to the involvement in the section bottom and CWB, respectively. The frame and keel beam underneath the CWB are completely crushed. The spanwise beams of CWB are buckled but not collapsed. The longitudinal rib was not appropriately distorted and thus prevented the spanwise beams' buckling. Energy analysis shows that the deformation energy is mainly attributed to the plastic deformation in high dropping velocity. Finally, some proposals on the improvement of crashworthiness are remarked.

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Crashworthiness study of a keel beam structure

Cited by 4 publications

References 5 publications

A Numerical Study on Multi-Terrain Impacts of an Aeronautical Fuselage Section

A Numerical Study on Multi-Terrain Impacts of an Aeronautical Fuselage Section

Crashworthiness study of a civil aircraft fuselage section

Crash simulation of the fuselage section with central wing box for a regional jet

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