Structure design and multi-objective optimization of a novel crash box based on biomimetic structure

Wang, Chunyan; Li, Yan; Zhao, Wanzhong; Zou, Songchun; Guan, Zailin; Wang, YuanLong

doi:10.1016/j.ijmecsci.2018.01.032

Cited by 175 publications

(37 citation statements)

References 39 publications

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“…Compared with the ordinary structure, the negative Poisson's ratio (NPR) structure exhibits better mechanical property, such as lower mass, higher energy absorption, and impact resistance. [19][20][21] Wang et al 22 proposed a crash box composed of a concave structure shell and an inner core filled with the NPR structure, and a multi-objective optimization design is conducted for the crash box. The results showed that the energy absorption characteristics of the crash box were improved effectively.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective crashworthiness optimization of vehicle body with negative Poisson’s ratio structure based on factorial analysis

Zou

Dai

Zhao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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To improve vehicle side crashworthiness, this paper first introduces the negative Poisson’s ratio structure to the traditional B-pillar and proposes a negative Poisson’s ratio B-pillar. Then, the performance of the negative Poisson’s ratio B-pillar is studied in detail by comparison with a traditional B-pillar and honeycomb B-pillar. Aiming at the problem that the side crashworthiness is also significantly affected by the side structure parameters of vehicle body, the factorial analysis theory is adopted to screen out the side structure parameters with significant effect. Based on this, by combining the optimal Latin hypercube design and response surface model, a multi-objective optimization design is conducted for those structure parameters based on non-dominated sorting genetic algorithm II. Finally, the normal boundary intersection method is adopted to seek the Pareto optimal solution, and the simulation results show that compared with the traditional B-pillar, the negative Poisson’s ratio B-pillar optimized by non-dominated sorting genetic algorithm II has better comprehensive crashworthiness. The results of this paper can provide some basis for the design and optimization of vehicle side crashworthiness.

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Section: Introductionmentioning

confidence: 99%

Multi-objective crashworthiness optimization of vehicle body with negative Poisson’s ratio structure based on factorial analysis

Zou

Dai

Zhao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…30 In recent years, some micro-topology structure with negative Poisson's ratio (NPR) has attracted many interests because of the excellent mechanical properties compared with hexagonal structure (HS), such as re-entrant structure (RS), [31][32][33] double arrowhead structure (DAS), [34][35][36] and starshaped structure (SSS). 37 Wang et al 38,39 proposed a novel crash box filled with a three dimensional NPR inner core based on RS and introduced the structural bionics to the structural design to investigate the crashworthiness performance of crash box under the axial impact. The simulation results showed that the 3-D NPR crash box could generate smooth deformation and further improve the energy absorption performance compared with the initial design and the 2-D NPR crash box.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of crash box filled with three-dimensional cellular structure under multi-angle impact loading

Liang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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Oblique impact loading conditions are common in automobile collision accidents, which strongly influence the energy absorption performance of thin-walled structures. In this paper, a novel three-dimensional (3-D) hexagonal structure-filled crash box with better comprehensive crashworthiness under multiple working conditions is proposed. First, the finite element models of four 3-D typical cellular structures (hexagon structure, re-entrant hexagon structure, star-shape structure, double arrow structure) are established. The dynamic responses of four structures under different impact angles (from 0° to 30°) and impact velocities (from 5 to 15 m/s) are discussed. The results reveal that the 3-D hexagonal structure has great advantages in terms of the energy absorption at varying inclination angles. Second, the 3-D hexagonal structure is filled in the crash box in the form of gradient distribution. The multi-island genetic algorithm (MIGA) based on the response surface model (RSM) is utilized to explore the optimal design of crash box. Compared with the traditional crash box, the optimal 3-D hexagonal structure-filled crash box increases 18.9% in specific energy absorption and decreases 21.7% in maximum peak force, which demonstrates great potential for applications in impact engineering.

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“…If a certain bio-structure has a function of impact resistance for protection, we can intuitively expect a good energy absorption capability of the structure toward the common scenarios. It is not uncommon, for example, for cellular structures in plants and animals that are known to support great weights, like bone [5], to contain a strong outer wall and a low density or entirely vacant central chamber such as grass [6]. Although these evolutions are not the same, they perform similar purposes, and as such much can be gleaned from their relationships.…”

Section: Introductionmentioning

confidence: 99%

Energy Absorption Performance of Bio-inspired Honeycombs: Numerical and Theoretical Analysis

Sherman

Zhang

2021

Acta Mech. Solida Sin.

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Energy absorption performance has been a long-pursued research topic in designing desired materials and structures subject to external dynamic loading. Inspired by natural bio-structures, herein, we develop both numerical and theoretical models to analyze the energy absorption behaviors of Weaire, Floret, and Kagome-shaped thin-walled structures. We demonstrate that these bio-inspired structures possess superior energy absorption capabilities compared to the traditional thin-walled structures, with the specific energy absorption about 44% higher than the traditional honeycomb. The developed mechanical model captures the fundamental characteristics of the bio-inspired honeycomb, and the mean crushing force in all three structures is accurately predicted. Results indicate that although the basic energy absorption and deformation mode remain the same, varied geometry design and the corresponding material distribution can further boost the energy absorption of the structure, providing a much broader design space for the next-generation impact energy absorption structures and systems.

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Structure design and multi-objective optimization of a novel crash box based on biomimetic structure

Cited by 175 publications

References 39 publications

Multi-objective crashworthiness optimization of vehicle body with negative Poisson’s ratio structure based on factorial analysis

Multi-objective crashworthiness optimization of vehicle body with negative Poisson’s ratio structure based on factorial analysis

Multi-objective optimization of crash box filled with three-dimensional cellular structure under multi-angle impact loading

Energy Absorption Performance of Bio-inspired Honeycombs: Numerical and Theoretical Analysis

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