Improvement of crashworthiness behaviour for simplified structural models of aircraft fuselage

Meng, Fanhao; Zhou, Qingxiao; Jiang, Yang

doi:10.1080/13588260802517360

Cited by 41 publications

(13 citation statements)

References 4 publications

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“…Step [17] 6.80 Zheng et al [8] 7.00 Meng et al [10] 7.40 Fasanella et al [38] 7.74 Adams and Lankarani [39] 9.00 Adams et al [40] 9.15 Jackson et al [41] 9.45 Ren and Xiang [18] 24.5 Mean 9.75 Table 9: Points from mass -E a Pareto front.…”

Section: List Of Figuresmentioning

confidence: 96%

“…Many authors are drawing their efforts towards the optimization of this section, having tried several alternatives to improve its performance. The use of composite sine-wave beams in the sub-floor structure [7], evenly spaced blocks of crushable foam [8], and folded core [9] and honeycomb structures [10] have recently proved their remarkable capabilities ebbing away the abrupt deceleration peaks suffered by passengers.…”

Section: Introductionmentioning

confidence: 99%

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Size and shape optimization of aluminum tubes with GFRP honeycomb reinforcements for crashworthy aircraft structures

Paz

Díaz

Romera

et al. 2015

Composite Structures

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Please cite this article as: Paz, J., Díaz, J., Romera, L., Costas, M., Size and shape optimization of aluminum tubes with GFRP honeycomb reinforcements for crashworthy aircraft structures, Composite Structures (2015), doi: http:// dx. AbstractCrashworthiness optimization of aircraft and automotive structures has become one the main research targets for their respective leading industries. The following research proposes a new design of an aircraft's vertical strut. The design consists of a hollow aluminum square tube with a glass-fiber reinforced polymer honeycomb-shaped inner structure. Size and shape surrogate-based optimization techniques are used, with the thicknesses of both materials, cell size and cell shape as design variables. The objective function chosen for the single-objective optimization is the specific energy absorption, while the metrics for the multi-objective optimization are the peak force, mass, absorbed energy and the specific energy absorption. An improvement of 22% of the specific energy absorption with low peak force values is obtained from the single-objective optimization by significantly changing all design variables. Two Pareto fronts have been obtained from the multi-objective optimization confronting, the specific energy absorption against the peak force and the mass against the energy absorbed. When compared to the baseline model, the optimized models show substantial improvement, increasing the specific energy absorption by 65% or reducing the peak force by over 55%. It has been observed an important effect of the cell shape on the model's performance.

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Section: List Of Figuresmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Size and shape optimization of aluminum tubes with GFRP honeycomb reinforcements for crashworthy aircraft structures

Paz

Díaz

Romera

et al. 2015

Composite Structures

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“…Besides, a new bottom structure with honeycomb exhibits excellent impact performance as shown in Fig. 20 (17) . It has better impact dynamic performance than that of original structure.…”

Section: Available Bottom Structure Designmentioning

confidence: 96%

“…However, it is a very difficult work to apply them in TMCA. Except foam and sine-wave beam, honeycomb and thin-walled structures also are the important high efficiency energy absorption structures (17) . Among them, thin-walled structures including circular and square tube have various failure behaviours.…”

Section: Energy Absorption Structure In Aircraft Crashworthiness Designmentioning

confidence: 99%

Energy absorption structures design of civil aircraft to improve crashworthiness

Ren¹,

Xiang²

2014

Aeronaut. j. (1968)

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To improve the crashworthiness of civil aircraft, the design concept of energy absorption structure for civil aircraft is investigated. Two typical different design principles could be identified. The first category includes Helicopter and Light fixed-wing Aircraft (HLA), and Transport, Mid-size and Commuter type Aircraft (TMCA) are classified into the second group. Frame, strut and bottom structure are the three kinds of energy absorption structure for TMCA. The strut layout of conventional civil aircraft is studied and some energy absorption devices are adopted. High efficiency energy absorption structures such as the foam and sine-wave beam are employed as the bottom structure for both of HLA and LMCA. The finite element method is used to analyse and design energy absorption structure in aircraft crashworthiness problem. Results show that the crashworthiness of civil aircraft could be largely improved by using proper strut layout and excellent energy absorption device. The stiffness combination of frame and strut should be considered to get better global aircraft deformation. Supporting platform and failure model are the two core problems of bottom energy absorption structure design. Foam and sine-wave beam under the lifted frame could improve the crashworthiness of civil aircraft.

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“…A lot of research was conducted with respect to composite sine wave beams in the subfloor structure that are crushed under vertical crash loads [4][5][6][7][8][9]. Further concepts are based on foam [10] or honeycomb absorbers [11,12] in the subfloor structure. Illustration of aircraft fuselage drop test for crashworthiness evaluation.…”

Section: Introductionmentioning

confidence: 99%

Composite crash absorber for aircraft fuselage applications

Heimbs¹,

Strobl²,

Middendorf³

et al. 2010

WIT Transactions on the Built Environment

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A composite crash absorber element for potential use in z-struts of commercial aircraft fuselage structures was developed, which absorbs energy under crash loads by cutting the composite strut into stripes and crushing the material under bending. The design concept of this absorber element is described and the performance is evaluated experimentally in static, crash and fatigue test series on component and structural level under normal and oblique impact conditions. The physics of the energy absorption by high rate material fragmentation and delamination interactions are explained and numerical modelling methods in explicit finite element codes for the simulation of the crash absorber are assessed.

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Improvement of crashworthiness behaviour for simplified structural models of aircraft fuselage

Cited by 41 publications

References 4 publications

Size and shape optimization of aluminum tubes with GFRP honeycomb reinforcements for crashworthy aircraft structures

Size and shape optimization of aluminum tubes with GFRP honeycomb reinforcements for crashworthy aircraft structures

Energy absorption structures design of civil aircraft to improve crashworthiness

Composite crash absorber for aircraft fuselage applications

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