An optimized bio-inspired thin-walled structure with controllable crashworthiness based on magnetorheological fluid

Cheng, Xiangyu; Bai, Zhonghao; Zhu, Feng; Chou, Clifford C.; Jiang, Binhui; Xu, S.W.

doi:10.1080/15376494.2022.2146240

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…In particularly, the grooves on the tubular scaffold with circular cross-section were observed to behave with the definition of "corcentina mode" (Wang et al, 2018;Gong et al, 2020;Cheng et al, 2022;). In axial loading, it is desirable to provide the deformation as collapse without bending of scaffold in the same direction.…”

Section: Geometry Of Bio-hybrid Designmentioning

confidence: 95%

“…However, the optimum design parameters were determined by numerical simulations. Bamboo, plant stem, pomelo peel and horsetail-inspired structures provides an advantageous structure which is prepared with the definition of bionic energy absorber under axial loads (Zou et al, 2016;Zhang et al, 2019;Qin et al, 2022;Cheng et al, 2022). The design parameters such as multi-cell number and structural hierarchy, outer and inner diameter of the circular structure that was designed by bioinspired crashworthiness were more effectively in the SEA (specific energy absorption) (Zhang et al, 2018;Gong et al, 2020;Zhang et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biyo-Hibrit Çarpışma Kutusu Tasarımının Sayısal Analizi ve Eğik Darbe Altında Enerji Sönümleme Performanslarının İncelenmesi

ERDOĞUŞ

2023

UMAG

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Designs inspired by nature are used in several areas as automotive, aerospace and defence industry. In studies on the axial crushing analysis of thin-walled structures such as crashworthiness, a critical role of developments of design aspects have been achieved by the bioinspired perspective. The energy absorption performance of the crashworthiness which shapes the basis of the crushing analysis is the main aspects of the numerical and experimental solution methods. In order to verification of finite element model, the energy absorption characteristic specifications were performed the square tube under axial loads. Using the proposed of lotus-inspired design performances of axial load condition, the newly design was prepared square tube included lotus bifurcation as called "bio-hybrid". To compare the axial and oblique loads performances of the L (lotus) and BH (bio-hybrid) structures, force-deformation curves was evaluated with characteristic properties as EA, CFE, SEA, MCF and PCF. The numerical analysis showed that the square outer frame included lotus bifurcation of crashworthiness is less suitable than natural circular lotus configuration under oblique loads. However, the lotus-inspired configuration is advantageous under axial loads

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Section: Geometry Of Bio-hybrid Designmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Biyo-Hibrit Çarpışma Kutusu Tasarımının Sayısal Analizi ve Eğik Darbe Altında Enerji Sönümleme Performanslarının İncelenmesi

ERDOĞUŞ

2023

UMAG

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“…In the last decade, researchers have tried to apply MREAs to absorb impact energy adaptively and protect personnel, structures and equipment in high-speed impact conditions, such as helicopter seat suspensions (Choi and Wereley 2005), automobile seat suspensions (Mao 2011, Bai andYang 2019), planetary lander (Maeda et al 2019), automobile longitudinal impact energy absorbing device (Woo et al 2007), artillery/machine gun recoil system (Ahmadian and Poynor 2001, Ahmadian et al 2003, Li et al 2019 and emergency collision buffer devices for elevators, etc (Cheng et al 2022, Shen et al 2022, Zheng et al 2022, Christie et al 2023. According to the form of excitations, Shou (2020) defined shock and vibration conditions.…”

Section: Mreasmentioning

confidence: 99%

Adaptive magnetorheological fluid energy absorption systems: a review

Bai,

Zhang,

Choi

et al. 2024

Smart Mater. Struct.

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Since last two decades, magnetorheological (MR) fluids have attracted attention extensively since they can rapidly and continuously control their rheological characteristics by adjusting an external magnetic field. Because of this feature, MR fluids have been applied to various engineering systems. This paper specifically investigates the application of MR fluids in shock mitigation control systems from the aspects of three key technical components: the basic structural design of MR fluid-based energy absorbers (MREAs), the analytical and dynamical model of MREAs, and the control method of adaptive MR shock mitigation control systems. The current status of MR technology in shock mitigation control is presented and analyzed. Firstly, the fundamental mechanical analysis of MREAs is carried out, followed by the introduction of typical MREA configurations. Based on the mechanical analysis of MREAs, the structural optimization of MREAs used in shock mitigation control is discussed. The optimization methods are given from perspectives of the design of piston structures, the layout of electromagnetic coil, and the MR fluid gap. Secondly, the methods of damper modeling for MREAs are introduced with and without the consideration of inertia effect, respectively. Then both the modeling methods and their characteristics are introduced for representative parametric dynamic models, semi-empirical dynamic models, and non-parametric dynamic models. Finally, the control objectives and requirements of the shock mitigation control systems are analyzed, and the current competitive methods for the ideal “soft-landing” control objectives are reviewed. The typical control methods of the MR shock mitigation control systems are discussed, and based on this the evaluation indicators of the control performance are summarized in MR shock mitigation control systems.

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“…Various energy-absorbing devices installed at the front of the vehicle are the main means of improving its crashworthiness [ 1 , 2 , 3 , 4 , 5 ]. Over the past few decades, various types of thin-walled metal tubes have been used in the design and manufacture of energy-absorbing devices, such as circular, square, and gradient tubes [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. Extensive research has demonstrated that an excellent energy absorber should have a long plateau stage, a large platform force, and a low peak force.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Out-of-Plane Deformation Mechanisms of Vertex-Based Hierarchical Structures for Crashworthiness

et al. 2023

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This study examines a hierarchical vertex-based structure that improves the crashworthiness of the conventional multi-cell square, a biological hierarchy of natural origin with exceptional mechanical properties. The vertex-based hierarchical square structure (VHS) is explored for its geometric properties, including infinite repetition and self-similarity. The cut-and-patch method is used to derive an equation for the material thicknesses of different orders of the VHS based on the principle of the same weight. A thorough parametric study of VHS was conducted using LS-DYNA, which examined the effects of material thickness, orders, and various structural ratios. The results were evaluated based on common crashworthiness criteria and demonstrated that the total energy absorption (TEA), specific energy absorption (SEA), and mean crushing force (Pm) of VHS exhibited similar monotonicity concerning the orders. SEA of the first-order VHS with λ1=0.3 and the second-order VHS with λ1=0.3 and λ2=0.1 are improved by at most 59.9% and 102.4% respectively; the second-order VHS with 0.2≤λ1≤0.4 and 0.1≤λ2≤0.15 have the better overall performance of crashworthiness. Then, the half-wavelength equation of VHS and Pm of each fold was established based on the Super-Folding Element method. Meanwhile, a comparative analysis with the simulation results reveals three different out-of-plane deformation mechanisms of VHS. The study indicated that material thickness had a greater impact on crashworthiness. Finally, the comparison with conventional honeycombs demonstrated that VHS holds great promise as a structure for crashworthiness. These results provide a solid foundation for further research and development of new bionic energy-absorbing devices.

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An optimized bio-inspired thin-walled structure with controllable crashworthiness based on magnetorheological fluid

Cited by 6 publications

References 18 publications

Biyo-Hibrit Çarpışma Kutusu Tasarımının Sayısal Analizi ve Eğik Darbe Altında Enerji Sönümleme Performanslarının İncelenmesi

Biyo-Hibrit Çarpışma Kutusu Tasarımının Sayısal Analizi ve Eğik Darbe Altında Enerji Sönümleme Performanslarının İncelenmesi

Adaptive magnetorheological fluid energy absorption systems: a review

Comparative Analysis of Out-of-Plane Deformation Mechanisms of Vertex-Based Hierarchical Structures for Crashworthiness

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