金属球壳填充网管轴向冲击吸能特性研究  

RESEARCH ON AXIAL IMPACT ENERGY ABSORPTION CHARACTERISTICS OF METAL SPHERICAL SHELL FILLED RETICULATED TUBE

作　　者：郑氏韦 吴菲 章争荣[1,2] ZHENG ShiWei;WU Fei;ZHANG ZhengRong(School of Material and Energy,Guangdong University of Technology,Guangzhou 510006,China;Guangdong Provincial Key Laboratory of Metal Forming Processing and Forging Equipment Technology,Foshan 528399,China)

机构地区：[1]广东工业大学材料与能源学院,广州510006 [2]广东省金属成形加工与锻压装备技术重点实验室,佛山528399

出　　处：《机械强度》2023年第6期1493-1497,共5页Journal of Mechanical Strength

基　　金：国家自然科学基金项目(52175294)资助。

摘　　要：将运输领域中金属管的吸能避碰概念与建筑领域中具有优异吸震抗冲击性能的球形网壳结构理论相结合。提出了新型吸能结构———网管(RT)、赤道球(ES)、桁架球(TR)、表面孔球(TSH)填充球形网管。为了与传统的吸能结构进行比较,将铝合金薄壁圆管(T)进行填充并作为研究对象。通过落锤冲击实验,研究其吸能特性,发现TSH、ES和TR填充的网管对比铝合金薄壁圆管具有更显著的填充效果,承载能力、能量吸收、载荷效率和比吸能显著提高。与填充铝合金管相比,填充网管不仅能显著降低冲击效应,使初始冲击峰值基本保持不变,还能显著提高单位质量的能量吸收。因此,TSH、ES和TR填充网管可以成为满足轻量化、高能量吸收、低冲击效果要求的新型轻量化结构。In this study,the concept of energy absorption and collision avoidance of metal tubes in the transportation field is combined with a spherical reticulated shell structure with excellent vibration absorption and impact resistance in the construction field.New energy absorption structures—reticulated tubes(RT),equator skeleton spherical reticulated shells(ES),truss spherical reticulated shells(TR),and thin-walled sphere with round holes(TSH),and sphere-filled RTs—are proposed.In order to compare with the traditional energy absorption structure,aluminium alloy thin-walled tubes are also included in the study.The energy absorption characteristics were studied by drop-hammer impact test,the TSH,ES and TR-filled RTs can produce more prominent filling effect than the corresponding aluminium alloy tubes and significantly improve the carrying capacity,energy absorption,crushing forceefficiency,and specific energy absorption.Compared with the filled aluminum alloy tubes,spherefilled RTs can not only significantly reduce the impact effect,keep the initial impact peak basically unchanged,but also significantly improve the energy absorption per unit mass.Thus,the TSH,ES,and TR-filled RTs can be new types of lightweight structures which can meet the requirements of lightweight,high energy absorption,and low impact effect.

关 键 词：新型吸能结构 铝合金填充管 冲击 能量吸收 轻量化 

分 类 号：TG142.71[一般工业技术—材料科学与工程]