Crushing analysis and multi-objective optimization design for bionic thin-walled structure

Yin, Hanfeng; Xiao, Youye; Wen, Guilin; Qing, Qixiang; Wu, Xin

doi:10.1016/j.matdes.2015.08.095

Cited by 111 publications

(27 citation statements)

References 45 publications

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“…To simulate the contact between the two plates and the hierarchical honeycombs, two "automatic_nodes_to_surface" contacts with static and dynamic friction coefficients of 0.3 and 0.2 were used, respectively. Moreover, an "automatic_single_surface" contact was defined to simulate the contact within the hierarchical honeycomb itself during collapse [28]. Fig.…”

Section: Finite Element Modelingmentioning

confidence: 99%

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In-plane crashworthiness of bio-inspired hierarchical honeycombs

Yin

Huang

Scarpa

et al. 2018

Composite Structures

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110

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Biological tissues like bone, wood, and sponge possess hierarchical cellular topologies, which are lightweight and feature an excellent energy absorption capability. Here we present a system of bio-inspired hierarchical honeycomb structures based on hexagonal, Kagome, and triangular tessellations. The hierarchical designs and a reference regular honeycomb configuration are subjected to simulated in-plane impact using the nonlinear finite element code LS-DYNA. The numerical simulation results show that the triangular hierarchical honeycomb provides the best performance compared to the other two hierarchical honeycombs, and features more than twice the energy absorbed by the regular honeycomb under similar loading conditions. We also propose a parametric study correlating the microstructure parameters (hierarchical length ratio r and the number of sub cells N) to the energy absorption capacity of these hierarchical honeycombs. The triangular hierarchical honeycomb with N = 2 and r = 1/8 shows the highest energy absorption capacity among all the investigated cases, and this configuration could be employed as a benchmark for the design of future safety protective systems.

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Section: Finite Element Modelingmentioning

confidence: 99%

“…Comparison of the deformations obtained from the finite element analysis and the experiment[28] related to a regular hexagonal honeycomb (Here ε denotes the nominal compressive strain).…”

mentioning

confidence: 99%

In-plane crashworthiness of bio-inspired hierarchical honeycombs

Yin

Huang

Scarpa

et al. 2018

Composite Structures

Self Cite

110

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“…Thin-walled structures are fundamental to a range of microfeatures required in various work materials [ 1 ]. The growing need for thin-walled structures is due to their capability for high heat dissipation and their light weight ratios [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

High Aspect Ratio Thin-Walled Structures in D2 Steel through Wire Electric Discharge Machining (EDM)

et al. 2020

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Thin structures are often required for several engineering applications. Although thick sections are relatively easy to produce, the cutting of thin sections poses greater challenges, particularly in the case of thermal machining processes. The level of difficulty is increased if the thin sections are of larger lengths and heights. In this study, high-aspect-ratio thin structures of micrometer thickness (117–500 µm) were fabricated from D2 steel through wire electrical discharge machining. Machining conditions were kept constant, whereas the structure (fins) sizes were varied in terms of fin thickness (FT), fin height (FH), and fin length (FL). The effects of variation in FT, FH, and FL were assessed over the machining errors (FT and FL errors) and structure formation and its quality. Experiments were conducted in a phased manner (four phases) to determine the minimum possible FT and maximum possible FL that could be achieved without compromising the shape of the structure (straight and uniform cross-section). Thin structures of smaller lengths (1–2 mm long) can be fabricated easily, but, as the length exceeds 2 mm, the structure formation loses its shape integrity and the structure becomes broken, deflected, or deflected and merged at the apex point of the fins.

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“…Aktay et al [17] proposed several different numerical simulation methods of quasi-static compression and made experimental studies on honeycomb structures. Certain researchers also focused their studies on other topological honeycombs [18][19][20]. Zhang et al [21] performed design optimization for the energy absorption of bitubal hexagonal columns with honeycomb core under dynamic axial crushing.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Crushing Response for Metal Hexagonal Honeycomb under Quasi‐Static Loading

Geng

Liu

Wei

et al. 2018

Shock and Vibration

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To provide a theoretical basis for metal honeycombs used for buffering and crashworthy structures, this study investigated the out-of-plane crushing of metal hexagonal honeycombs with various cell specifications. The mathematical models of mean crushing stress and peak crushing stress for metal hexagonal honeycombs were predicted on the basis of simplified super element theory. The experimental study was carried out to check the accuracy of mathematical models and verify the effectiveness of the proposed approach. The presented theoretical models were compared with the results obtained from experiments on nine types of honeycombs under quasi-static compression loading in the out-of-plane direction. Excellent correlation has been observed between the theoretical and experimental results.

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Crushing analysis and multi-objective optimization design for bionic thin-walled structure

Cited by 111 publications

References 45 publications

In-plane crashworthiness of bio-inspired hierarchical honeycombs

In-plane crashworthiness of bio-inspired hierarchical honeycombs

High Aspect Ratio Thin-Walled Structures in D2 Steel through Wire Electric Discharge Machining (EDM)

Prediction of Crushing Response for Metal Hexagonal Honeycomb under Quasi‐Static Loading

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