Multiple Performance Evaluation of Bionic Thin-Walled Structures with Different Cross Sections considering Complex Conditions
TL;DR: Wang et al. as discussed by the authors proposed 12 kinds of bionic thin-walled energy absorption structures with different cross sections and bamboo of tubes, which is inspired by the structural characteristics of bamboo.
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Abstract: Bionic thin-walled structures, due to their excellent energy absorbing capacity, low manufacturing cost, and remarkable level of lightweight, have been widely applied in the field of traffic safety protection. Combinatorial structures that incorporate the prototypical characteristics of multiple organisms also turn into the hotspot of the research on safety protection structure, which can achieve more excellent overall performance. However, how to select the optimal alternative considering the performance of different attributes and different accident conditions has become an urgent problem to be solved. This paper proposes 12 kinds of bionic thin-walled energy absorption structures with different cross sections and bamboo of tubes, which is inspired by the structural characteristics of bamboo. A comprehensive performance analysis, including specific energy absorption, peak crushing force, and undulation of the load-carrying capacity under quasi-static and dynamic conditions, is carried out based on the finite element simulation. The gray relational analysis method is applied to select the optimal structure. In addition, sensitivity analysis of each structural variable is conducted. The result shows that the “+-3” bionic thin-walled structure has the best comprehensive performance, and the structural variable has great impact on the PCF. This study provides an effective decision-making support tool for performance evaluation of bionic thin-walled structures.
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Citations
Performance analysis and multi-objective optimization of bionic dendritic furcal energy-absorbing structures for trains
TL;DR: In this article , a hybrid multi-stage optimization decision system, i.e., multi-criteria decision-making (MCDM)- multi-objective optimization (MOP)- MCDM, which integrates the VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) method, the multiple objective particle swarm optimization-crowding distance evolutionary algorithm and repetitive VIKOR method, is proposed to find the optimal structure and obtain the optimal parameter alternative of the structure.
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Bionic design of thin-walled tubes inspired by the vascular structure of bamboo
TL;DR: In this paper , a design inspired by the vascular fiber sheath flap (VF) and central through-hole characteristics of bamboo vascular bundles is proposed to improve the crashworthiness and energy absorption of thin-walled tubes.
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Bio-inspired cellular thin-walled structures under impact loading: Modeling and multi-stage cooperative optimization algorithm
TL;DR: In this article , a multi-stage cooperative optimization algorithm was proposed for solving the selection and optimization problems of bio-inspired cellular thin-walled structures, which combines the theories of multi-objective optimization and multi-criteria decision making.
Multiscale Characterization and Biomimetic Design of Porcupine Quills for Enhanced Mechanical Performance
Lili Liu,Yurong Wang,Jianyong Zhao,Zhihao Cai,Ce Guo,Longhai Li +5 more
TL;DR: Multiscale characterization and biomimetic design of porcupine quills for enhanced mechanical performance explores the mechanical properties of porcupine quills and their utilization in biomimetic structures. The study revealed distinct variations in elastic moduli across different regions and cross sections of the quills, leading to the design of various porous structures. These structures exhibited enhanced mechanical performance in compression, torsion, and impact tests, with the biomimetic porous circular structure 3 showcasing exceptional energy absorption and specific energy absorption capabilities.
Literature review on thin-walled and cellular structure designs for energy absorption
T. Dabasa,Hirpa G. Lemu,Yohanes Regassa +2 more
- 01 Dec 2023
TL;DR: Bio-inspired thin-walled and cellular structures excel in energy absorption. Combining experimental research with FEA simulations enhances understanding of impact response and energy absorption mechanisms. Validations ensure alignment of experimental results with FEA predictions. Practical applications showcase the paradigm-shifting potential for boosting impact protection. Novel research avenues are proposed to further explore the potential of biomimetic architectures.
References
Engineered bamboo for structural applications
TL;DR: In this paper, the mechanical properties of two types of commercially available products (scrimber and laminated bamboo sheets) were investigated and compared to wood and engineered timber products, and it was shown that engineered bamboo products have properties comparable to or surpass that of timber and timber-based products.
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Design of bionic-bamboo thin-walled structures for energy absorption
TL;DR: In this paper, a bionic-bamboo tube (BBT) structure with six different cross-sectional configurations was devised with inspiration of bamboo microstructure and the effects of rib shape and rib number were analyzed by using the finite element code LS-DYNA.
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Dynamic crashing behavior of new extrudable multi-cell tubes with a functionally graded thickness
TL;DR: In this paper, a functionally graded thickness (FGT) was introduced to multi-cell tubes under dynamic impact, which can be fabricated by an extrusion process and a numerical model was established using the nonlinear finite element analysis code LS-DYNA and validated with experimental data.
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Crashworthiness design for bio-inspired multi-cell tubes with quadrilateral, hexagonal and octagonal sections
TL;DR: In this paper, a group of bionic multi-cell tubes (BMCTs) with quadrilateral, hexagonal and octagonal sections were proposed, and the results showed that the sixth type of BMCT with octagonal section (O-BMCT-6) has the best crashing performance.
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Energy absorption characteristics of bio-inspired honeycomb structure under axial impact loading
Jinwu Xiang,Jianxun Du +1 more
TL;DR: In this article, a new honeycomb structure named as bionic honeycomb thin-walled structure (BHTS) which filled the column in different way inspired by the internal structure of the ladybeetle is proposed.
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