Theoretical prediction for energy absorption properties of 3D lattice structures

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL Thin-Walled Structures Pub Date : 2025-02-06 DOI:10.1016/j.tws.2025.113043

Hanfeng Yin , Ning Wang , Lijia Wu , Guilin Wen , Jie Liu

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Abstract

Due to the development of additive manufacturing technology, a lot of complex 3D cellular structures can be manufactured. Therefore, there has been a significant growing interest in 3D printing cellular structures due to their excellent mechanical properties. As one type of periodic 3D cellular structure, triply periodic minimal surface (TPMS) lattice structure is investigated widely because it is found to have higher energy absorption capacity than the traditional 3D cellular structure. However, the previous investigation on TPMS structure was mainly implemented by simulation or experiment study. There is little theoretical prediction about the energy absorption properties of the TPMS structure. Hence, the theoretical prediction for TPMS structure is carried out in this study using the folding element theory together with the principle of conservation of energy. Three TPMS structures under axial crushing loading are theoretically analyzed. According to the comparison results, it is found that the theoretical prediction of mean crushing stress is in good agreement with both experimental and numerical simulation results. The theoretical prediction method can clearly reveal the influence rule of the structural parameters on the energy absorption of the TPMS structure. Moreover, the energy absorption of TPMS can be calculated conveniently by the theoretical prediction. Thus, the theoretical reference of TPMS cellular structures for its engineering application is provided.

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三维晶格结构能量吸收特性的理论预测

由于增材制造技术的发展，可以制造出许多复杂的三维细胞结构。因此，由于其优异的机械性能，人们对3D打印细胞结构的兴趣日益浓厚。三周期最小表面（TPMS）晶格结构作为一种周期三维元胞结构，由于具有比传统三维元胞结构更高的能量吸收能力而受到广泛的研究。然而，以往对TPMS结构的研究主要是通过仿真或实验研究来实现的。目前对TPMS结构的吸能性能的理论预测很少。因此，本研究采用折叠元理论结合能量守恒原理对TPMS结构进行理论预测。对三种TPMS结构在轴向破碎载荷下的受力进行了理论分析。对比结果表明，理论预测的平均破碎应力与实验和数值模拟结果吻合较好。理论预测方法可以清晰地揭示结构参数对TPMS结构吸能的影响规律。此外，通过理论预测可以方便地计算TPMS的能量吸收。从而为TPMS细胞结构的工程应用提供理论参考。

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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.