Zhen Zou^1,2, Fengxiang Xu^1,2,*, Yifan Zhu^1,2, Hao Luo^1,2, Xiao Geng^1,2

The International Conference on Computational & Experimental Engineering and Sciences, Vol.33, No.2, pp. 1-1, 2025, DOI:10.32604/icces.2025.010659

Abstract Although the arched structures inspired by biomaterials have been extensively applied in construction for load bearing, they remain a relatively new component for absorbing energy in impact scenarios. The hierarchical re-entrant honeycomb (RH) with horizontal and vertical arched units (namely, horizontally and vertically arched hierarchical RH (AHRH) – HAHRH and VAHRH) are constructed, and their metallic specimens are fabricated for compression testing. Compared to well-known circular units, the horizontal and vertical arched units exhibit an increase in plateau stress (PS) by 16.8% and 23.8%, and an enhancement in specific energy absorption (SEA) by 10.8% and… More >

Zhen Zou^1,2, Fengxiang Xu^1,2,*, Yifan Zhu^1,2, Xiaoqiang Niu^1,2, Xiao Geng^1,2

The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.1, pp. 1-1, 2024, DOI:10.32604/icces.2024.011093

Abstract Honeycomb cored sandwich structures have been attracted extensive attentions attributed to outstanding explosion and impact protection capability. Herein, in order to improve the anti-blast performance of re-entrant honeycombs (RH) cored sandwich panel, the conventional RH is reinforced by introducing catenary in the form of connecting both ends of horizontal cell walls and catenary. The results show that the deformation mode of the reinforced RHs (RRH) becomes more stable and regular compared to RHs, and the energy absorption of classic RHs can be enhanced because the reinforced structures and the improved auxetic deformation are employed simultaneously.… More >

Yiyuan Li¹, Yongjing Li^1,2, Shilin Yan^1,2,*, Pin Wen^1,2,*

CMES-Computer Modeling in Engineering & Sciences, Vol.140, No.3, pp. 3105-3119, 2024, DOI:10.32604/cmes.2024.051375 - 08 July 2024

Abstract Based on the traditional re-entrant honeycomb, a novel re-entrant octagon honeycomb (ROH) is proposed. The deformation mode of the honeycomb under quasi-static compression is analyzed by numerical simulation, and the results are in good agreement with the experimental ones. The deformation modes, mechanical properties, and energy absorption characteristics of ROH along the impact and perpendicular directions gradient design are investigated under different velocities. The results indicated that the deformation mode of ROH is affected by gradient design along the direction of impact and impact speed. In addition, gradient design along the direction of impact can… More >

Yuanxun Ou^1,2, Shilin Yan^1,2, Pin Wen^1,2,*

CMES-Computer Modeling in Engineering & Sciences, Vol.127, No.1, pp. 209-222, 2021, DOI:10.32604/cmes.2021.014828 - 30 March 2021

Abstract Due to the unique deformation characteristics of auxetic materials (Poisson’s ratio ), they have better shock resistance and energy absorption properties than traditional materials. Inspired by the concept of variable cross-section design, a new auxetic re-entrant honeycomb structure is designed in this study. The detailed design method of re-entrant honeycomb with variable cross-section (VCRH) is provided, and five VCRH structures with the same relative density and different cross-section change rates are proposed. The in-plane impact resistance and energy absorption abilities of VCRH under constant velocity are investigated by ABAQUS/EXPLICIT. The results show that the introduction… More >