Crashworthiness Optimization Design of Regional Airliner’s Fuselage Section Through Topometry Optimization

An, Weigang; Wang, Shigen; Han, Xu

doi:10.2514/1.j060049

Cited by 6 publications

(2 citation statements)

References 17 publications

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“…The desired FD response is achieved; several crashworthiness indicators are improved simultaneously such as peak force, mean force, specific energy absorption, and crash load efficiency. Nowadays, the TFD method is applied to crashworthiness optimization design of automobile front structures [30] and regional airliner's fuselage section [31] successfully. Although the idea of optimizing the thicknesses of each (shell) finite element of the structure gets good optimization results, this idea led to poor manufacturability of the designed structure.…”

Section: Introductionmentioning

confidence: 99%

Topometry Optimization of Energy Absorbing Structure through Targeting Force-Displacement Method considering Tailor Rolled Blank Process

Wang

Lin

et al. 2022

International Journal of Aerospace Engineering

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Inspired by topometry optimization, this work proposed a new design approach that mixed of targeting force-displacement (TFD) method and tailor rolled blank (TRB) process for thin-walled energy absorption structures, which has vast applied prospects in the aerospace and automotive industries. This method not only overcomes manufacturing difficulty caused by the TFD method based on topometry optimization but also provides a new idea for TRB energy absorption structure. The optimized results can be transferred to the computer aided design environment without additional postprocessing. Firstly, a uniform thickness constraint is introduced to make the designed structure have constant thickness distribution along desired direction; topometry optimization is carried out to use TFD method. Secondly, a method that can automatically divide the design domain is developed. The adjacent elements with smaller thickness differences are merged to form TRB subdomains based on the optimization results of forestep, and the TFD method is used again. Finally, TRB finite element modeling codes is developed. According to the second step, modeling of the transition zone is added to finally form the TRB structure that meets the requirements of manufacturing. This method is used to optimize the crashworthiness of the thin-walled tube under axial and oblique loading. Numerical results demonstrate the effectiveness of this method. Therefore, this method can be used to design high-efficiency energy absorber on aircraft or automobile, such as the strut of aircraft and energy absorption box of automobile.

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Section: Introductionmentioning

confidence: 99%

Topometry Optimization of Energy Absorbing Structure through Targeting Force-Displacement Method considering Tailor Rolled Blank Process

Wang

Lin

et al. 2022

International Journal of Aerospace Engineering

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“…This method is employed in a variety of sheet metal constructions to improve the mechanical properties. [30][31][32][33] In the authors' previous study, [34] free-size optimization-based graded lattice generation (FOGLG) is applied successfully for the first time to surface-based DG lattice structure. The performance of the proposed method is compared with HMTO in terms of modal response to demonstrate its effectiveness.…”

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confidence: 99%

Experimental and Numerical Modal Characterization for Additively Manufactured Triply Periodic Minimal Surface Lattice Structures: Comparison between Free‐Size and Homogenization‐Based Optimization Methods

Ozdemir

Şimşek²,

Kuser

et al. 2023

Adv Eng Mater

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Additive manufacturing (AM), a substantial breakthrough over traditional manufacturing processes, has evolved significantly over the last few decades to meet industry demand. [1,2] It enables designers to utilize nature-inspired complex structures such as triply periodic minimal surface (TPMS) lattice structures. [3][4][5] The TPMS structures are desired and topologically ordered in many design applications due to their attractive properties, such as being lightweight and enhanced mechanical properties. [6,7] Another advantage of these structures is that their mechanical performance and functionality can be further improved by altering the thickness of given structures. [8][9][10] The quest for the ideal structure prompts new optimization proposals in the literature. Topology optimization (TO), which defines the best material distribution within the design domain, is one of the most extensively utilized optimization methods in the literature. [11][12][13] Among the various mathematical methods for TO, the solid isotropic material with penalization (SIMP), proposed by Rozvany et al., [14] gained significant attention due to its simplicity in implementation for the TO. The application of this approach to generate multiclass microstructures made of truss elements is available in the literature. For example, surrogate models for different truss-based structures are used in TO to minimize the compliance of the structure for a given volume ratio. The methodology was demonstrated on 2D and 3D case studies. [15] In another study, [16]

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Crashworthiness optimization of thin-walled tube structures with tailor-welded blank using targeting force–displacement method

Wang

Lin

et al. 2022

Struct Multidisc Optim

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Crashworthiness Optimization Design of Regional Airliner’s Fuselage Section Through Topometry Optimization

Cited by 6 publications

References 17 publications

Topometry Optimization of Energy Absorbing Structure through Targeting Force-Displacement Method considering Tailor Rolled Blank Process

Topometry Optimization of Energy Absorbing Structure through Targeting Force-Displacement Method considering Tailor Rolled Blank Process

Experimental and Numerical Modal Characterization for Additively Manufactured Triply Periodic Minimal Surface Lattice Structures: Comparison between Free‐Size and Homogenization‐Based Optimization Methods

Crashworthiness optimization of thin-walled tube structures with tailor-welded blank using targeting force–displacement method

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