Dynamic compressive behaviour of multi-dimensional hybridized TPMS structure

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-04-11 DOI:10.1016/j.tws.2025.113304

Xiaonan Zhang, Xiangyu Xie, Shilin Yan, Yongjing Li, Yushuang Fang, Cheng Wang, Liang Ke

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引用次数: 0

Abstract

Triply periodic minimal surface (TPMS) lattices are widely used in aerospace, ballistic protection, and impact mitigation. Although numerous studies indicate that hybrid designs can improve the mechanical performance of TPMS structures, their effects on dynamic crushing and impact properties are still not well understood. This study integrates the mechanical characteristics of P and IWP unit cells to develop multi-dimensional (from 1D to 3D) hybrids using Sigmoid functions. Hybrid TPMS structures were produced from Al–Si10–Mg powder using the laser-based powder bed fusion (PBF–LB/M) technique. Their dynamic performance was evaluated through Split Hopkinson Pressure Bar (SHPB) tests, which validated finite element simulations within a 10 % strain range. The numerical simulations then provided dynamic response results over a broader range. The results demonstrate that hybrid designs significantly enhance energy absorption, with hybrid direction or plane aligned parallel to the compression direction achieving higher specific energy absorption (SEA), while the plateau stress increases under vertical alignment. Among these, the Hyb-1D IWP–P–IWP showed the best performance under high-strain-rate conditions. Additionally, the Gibson-Ashby theory was used to predict SEA and plateau stress across different relative densities, and stress-strain responses revealed notable sensitivity to loading rates. These findings highlight the potential of hybrid TPMS designs to optimize dynamic energy absorption, offering promising applications in military and impact protection systems.

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多维杂化TPMS结构的动态压缩特性

三周期最小表面（TPMS）晶格广泛应用于航空航天、弹道防护和冲击缓解。尽管大量研究表明混合设计可以改善TPMS结构的力学性能，但其对动态破碎和冲击性能的影响仍未得到很好的理解。本研究利用Sigmoid函数整合P和IWP单晶胞的力学特性，开发多维（从1D到3D）杂交体。采用激光粉末床熔融（PBF-LB /M）技术制备了Al-Si10-Mg粉末的杂化TPMS结构。通过分离式霍普金森压杆（SHPB）试验评估了它们的动态性能，该试验验证了10%应变范围内的有限元模拟。数值模拟提供了更大范围内的动态响应结果。结果表明，混合设计显著提高了材料的能量吸收，与压缩方向平行的混合方向或混合平面具有较高的比能吸收（SEA），而垂直方向下的平台应力增加。其中，Hyb-1D IWP-P-IWP在高应变速率条件下表现最佳。此外，采用Gibson-Ashby理论预测不同相对密度下的SEA和高原应力，应力-应变响应对加载速率具有显著的敏感性。这些发现突出了混合TPMS设计优化动态能量吸收的潜力，在军事和冲击防护系统中提供了有前途的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.