带有功能分级多孔晶格核心的 3D 打印夹层结构的弯曲行为

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2024-10-31 DOI:10.1016/j.tws.2024.112655

Meiling Fan , Tao Zeng , Rina Wu , Yuhua Cui , Guodong Xu , Xiaohong Wang , Su Cheng , Jue Zhao

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引用次数: 0

摘要

本文提出了一种新型分级多孔格核夹层结构，以实现材料轻量化和高机械性能之间的平衡。通过使用均质化和去均质化方法，提出了一个分析模型来研究分级多孔晶格夹芯结构的弯曲响应。为了设计和优化这些材料，对分级晶格夹芯结构的力学行为进行了全面的参数化研究。本研究利用三维打印技术实现了对孔隙率的精确控制。使用三维打印样品进行的实验验证了理论结果。研究发现，通过优化晶格核心中的孔隙梯度分布，可以在保持夹层结构轻质的同时提高机械性能。这些发现为设计适用于各种工程应用的定制夹层结构提供了宝贵的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Bending behaviors of 3D printed sandwich structures with functionally graded porous lattice cores

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Bending behaviors of 3D printed sandwich structures with functionally graded porous lattice cores

A novel graded porous lattice core sandwich structure is presented to achieve a balance between lightweight and high mechanical performance for materials. An analytical model is proposed to investigate the bending responses of graded porous lattice core sandwich structures by utilizing the homogenization and dehomogenization method. A comprehensive parametric investigation on the mechanical behaviors of the graded lattice sandwich structures is conducted in order to design and optimize these materials. The precise control of porosity is implemented utilizing 3D printing techniques in this study. The theoretical results are validated by the experiments using 3D printed samples. It is found that mechanical properties can be improved through optimization of pore gradient distribution in the lattice core while maintaining a light weight of the sandwich structures. These findings offer valuable insights for designing tailored sandwich structures that are suitable for a diverse range of engineering applications.

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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.