Experimental and numerical study on the dynamical crushing behaviour of sandwich structures with various cell cores under impact load

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-09-16 DOI:10.1016/j.tws.2025.114004

Tao Wang , Ming Cai Xu , Jin Pan

{"title":"Experimental and numerical study on the dynamical crushing behaviour of sandwich structures with various cell cores under impact load","authors":"Tao Wang , Ming Cai Xu , Jin Pan","doi":"10.1016/j.tws.2025.114004","DOIUrl":null,"url":null,"abstract":"<div><div>The present paper aims to figure out the dimensional combination of the core type and gradient distribution of honeycomb shape structure, which could be adopted for the potential applications considering capacity of energy absorption. The sandwich structures with uniform hexagonal, re-entrant hexagonal and gradient hexagonal cell cores are designed and manufactured via 3D-printing technology. The lateral impact tests are conducted to analyze the dynamical responses and damage evolution process of the sandwich structures by using the developed electromagnetic loading (EML) system. The corresponding experimental results are used to validate the numerical modelling approach loading and EML system. The comparative analysis of various design variables, including core type, impact energy, and gradient direction of cellular structures, on the deformation modes, structural compression strength and energy absorption are carried out. Under the same impact energy, the specific energy absorption (SEA) of the gradient hexagonal cell core is 13 % and 46 % larger than that from the uniform hexagonal cell core and re-entrant hexagonal cell core. The findings provide valuable insights into the selection of cellular core configurations for potential protection applications against impact load.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"218 ","pages":"Article 114004"},"PeriodicalIF":6.6000,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thin-Walled Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263823125010936","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 0

Abstract

The present paper aims to figure out the dimensional combination of the core type and gradient distribution of honeycomb shape structure, which could be adopted for the potential applications considering capacity of energy absorption. The sandwich structures with uniform hexagonal, re-entrant hexagonal and gradient hexagonal cell cores are designed and manufactured via 3D-printing technology. The lateral impact tests are conducted to analyze the dynamical responses and damage evolution process of the sandwich structures by using the developed electromagnetic loading (EML) system. The corresponding experimental results are used to validate the numerical modelling approach loading and EML system. The comparative analysis of various design variables, including core type, impact energy, and gradient direction of cellular structures, on the deformation modes, structural compression strength and energy absorption are carried out. Under the same impact energy, the specific energy absorption (SEA) of the gradient hexagonal cell core is 13 % and 46 % larger than that from the uniform hexagonal cell core and re-entrant hexagonal cell core. The findings provide valuable insights into the selection of cellular core configurations for potential protection applications against impact load.

查看原文本刊更多论文

冲击载荷作用下不同芯层夹层结构动态破碎特性的实验与数值研究

本文旨在找出蜂窝形状结构的芯型和梯度分布的尺寸组合，为考虑吸能能力的潜在应用提供参考。采用3d打印技术设计和制造了均匀六边形、重入六边形和梯度六边形芯芯的夹层结构。采用研制的电磁加载系统进行横向冲击试验，分析夹层结构的动力响应和损伤演化过程。实验结果验证了加载和EML系统的数值模拟方法。对比分析了蜂窝结构的芯型、冲击能、梯度方向等设计变量对变形模式、结构抗压强度和吸能的影响。在相同的冲击能量下，梯度六角形芯比均匀六角形芯和重入式六角形芯的比能量吸收（SEA）分别大13%和46%。这些发现为蜂窝芯配置的选择提供了有价值的见解，以防止潜在的冲击载荷保护应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.