Crashworthy design and energy absorption mechanisms for helicopter structures: A systematic literature review

Yang, Xianfeng; Ma, Jingxuan; Wen, Dongsheng; Yang, Jinling

doi:10.1016/j.paerosci.2020.100618

Cited by 67 publications

(19 citation statements)

References 219 publications

(224 reference statements)

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“…Among them, the thin-wall energy absorber must convert the kinetic energy in the collision process into other forms of energy in a controllable and predictable way. [1,2] Therefore, it is of great significance to explore the crashworthiness thin-walled energy-absorbing structures for passive safety of vehicles. In addition, in order to further improve the level of structural lightweight, reduce fuel consumption, reduce environmental pollution, lightweight and high strength carbon fiber reinforced plastic composites (CFRP) are more and more used in the automotive industry and aircraft industry.…”

Section: Introductionmentioning

confidence: 99%

Study on the axial impact of Al‐CFRP thin‐walled tubes with induced design

Zha

Wang

et al. 2022

Polymer Composites

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Metal-composite hybrid thin-walled tube has been widely studied due to its excellent lightweight characteristics and crashworthiness. In particular, there are few reports on the research and design of induced metal-composite thinwalled tubes under axial impact. Therefore, the crashworthiness of different induced Al-CFRP tubes was studied in this article by combining experimental and numerical simulation subjected to axial impact. The experimental results showed that the reasonable induced design is helpful to improve the crashworthiness of Al-CFRP hybrid tubes. Based upon the experimental tests and numerical modeling, the crashworthiness of the induced Al/CFRP tube was explored. Thereafter, the influence of structural parameters (CFRP fiber winding Angle, ratio of aluminum tube thickness to CFRP tube thickness) on the crashworthiness of induced Al-CFRP tube was investigated numerally, and the structural parameters were optimized by multi-objective design to obtain the optimal structural design parameters. And then the parametric study was carried out for exploring the effects of the hole diameter and hole number on the crushing behaviors of Al-CFRP hybrid tubes. Finally, a new multi-row induced structure was proposed. All multi-row induced configurations were evaluated by Complex Proportional Assessment Method (COPRAS), and the best induced configuration (C20 tube) was determined. Compared with the single-row induced structure with the best crashworthiness, the SEA, F mean , and CFE of the C20 tube increased by 4.41%, 5.24%, and 10.94%, respectively, and the F max of the C20 tube decreased by 6.59%.

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Section: Introductionmentioning

confidence: 99%

Study on the axial impact of Al‐CFRP thin‐walled tubes with induced design

Zha

Wang

et al. 2022

Polymer Composites

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“…Similar to the water landing scenarios of amphibian aircraft, ditching events of conventional aircrafts show the same fluid dynamics phenomena, and have been numerically studied widely. The effects of initial pitching angle and velocity (Xiao et al, 2021b;Guo et al, 2013;Qu et al, 2016;Zheng et al, 2021), fluid-structure interaction (Hughes et al, 2013;Yang et al, 2020), wave conditions (Woodgate et al, 2019;Xiao et al, 2021a) and various numerical strategies (Bisagni and Pigazzini, 2017;Siemann and Langrand, 2017;Xiao et al, 2017) on the kinematic characteristics and fluid dynamics phenomena have attracted most of the attention. The vertical acceleration, and its peak value in particular, is even more relevant than other kinematic characteristics as it may be responsible for possible comfort and safety problems occur on crew members, besides, of course, the effects in terms of structural integrity of the fuselage once it strikes the water (Neuberg and Drimer, 2017).…”

Section: Introductionmentioning

confidence: 99%

On applicability of von Karman's momentum theory in predicting the water entry load of V-shaped structures with varying initial velocity

Lu¹,

Buono²,

Xiao³

et al. 2022

Preprint

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“…Crashes of helicopters can be reduced by using energy-absorbing materials or structures [ 9 , 10 ]. Several articles are available on the topic of crashworthy design and energy absorption mechanisms for helicopter structures [ 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Optimization of a Totally Fiber-Reinforced Plastic Composite Sandwich Construction of Helicopter Floor for Weight Saving, Fuel Saving and Higher Safety

2021

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The application of fiber-reinforced plastic (FRP) composites as structural elements of air vehicles provides weight saving, which results in a reduction in fuel consumption, fuel cost, and air pollution, and a higher speed. The goal of this research was to elaborate a new optimization method for a totally FRP composite construction for helicopter floors. During the optimization, 46 different layer combinations of 4 different FRP layers (woven glass fibers with phenolic resin; woven glass fibers with epoxy resin; woven carbon fibers with epoxy resin; hybrid composite) and FRP honeycomb core structural elements were investigated. The face sheets were composed of a different number of layers with cross-ply, angle-ply, and multidirectional fiber orientations. During the optimization, nine design constraints were considered: deflection; face sheet stress (bending load, end loading); stiffness; buckling; core shear stress; skin wrinkling; intracell buckling; and shear crimping. The single-objective weight optimization was solved by applying the Interior Point Algorithm of the Matlab software, the Generalized Reduced Gradient (GRG) Nonlinear Algorithm of the Excel Solver software, and the Laminator software. The Digimat-HC software solved the numerical models for the optimum sandwich plates of helicopter floors. The main contribution is developing a new method for optimizing a totally FRP composite sandwich structure—due to its material constituents and construction—that is more advantageous than traditional helicopter floors. A case study validated this fact.

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Crashworthy design and energy absorption mechanisms for helicopter structures: A systematic literature review

Abstract: This is a repository copy of Crashworthy design and energy absorption mechanisms for helicopter structures: A systematic literature review.

Cited by 67 publications

References 219 publications

Study on the axial impact of Al‐CFRP thin‐walled tubes with induced design

Study on the axial impact of Al‐CFRP thin‐walled tubes with induced design

On applicability of von Karman's momentum theory in predicting the water entry load of V-shaped structures with varying initial velocity

Optimization of a Totally Fiber-Reinforced Plastic Composite Sandwich Construction of Helicopter Floor for Weight Saving, Fuel Saving and Higher Safety

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