Crashworthiness design of crash box filled with negative Poisson's ratio based on horn structure

耐撞性 撞车 结构工程 工程类 计算机科学 有限元法 程序设计语言
作者
Fengxiang Xu,Kejiong Yu,Lin Hua,Xiaoqiang Niu
出处
期刊:Mechanics of Advanced Materials and Structures [Taylor & Francis]
卷期号:29 (27): 6403-6420 被引量:14
标识
DOI:10.1080/15376494.2021.1978594
摘要

In order to improve the crashworthiness of the crash box, the cattle horn is selected as a bionic object. A crash box filled with negative Poisson's ratio honeycomb based on horn structure was designed by extracting its excellent structural characteristics of impact resistance. The axial deformation modes and energy absorption characteristics of bionic crash box are investigated by means of finite element method, and compared with square crash box, diagonal crash box and side-to-side crash box. Under axial impact, the horn-bionic crash box shows significantly better load-carrying and energy-absorbing capacity than the square crash box and the diagonal crash box. On this basis, the thickness parameters, multi-objective optimization design and structure improvement design of horn-bionic crash box are studied successively in this work. The results show that the improved bionic crash box based on horn structure has a typical progressive shrinkage deformation mode. Its SEA reaches 29.9 kJ/kg, which is 2.5 times that of the square crash box, and its PCF is also greatly reduced from 542.4 kN to 391.1 kN. Therefore, the methods of structural improvement such as pre-deformed treatment, constraint beam adjustment and shortening the NPR core can effectively reduce the PCF of the crash box, and improve its energy absorption capacity, so as to obtain better comprehensive crashworthiness. Introducing the key characteristics of the horn structure into the design of the car crash box can effectively improve structural crashworthiness and provide new design guidance for the other energy-absorption components of vehicle.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
wjx发布了新的文献求助30
刚刚
muzi发布了新的文献求助10
刚刚
我是老大应助lagom采纳,获得10
2秒前
烟花应助时柚采纳,获得10
2秒前
3秒前
西西完成签到,获得积分10
4秒前
8564523完成签到,获得积分10
4秒前
4秒前
周周发布了新的文献求助10
4秒前
今后应助cyw采纳,获得10
5秒前
6秒前
6秒前
cc完成签到,获得积分10
7秒前
苏灿应助jiajia采纳,获得10
7秒前
SciGPT应助阔达的萤采纳,获得10
9秒前
黄晓发布了新的文献求助10
10秒前
musejie应助臭学医的采纳,获得10
10秒前
菲菲发布了新的文献求助10
10秒前
10秒前
贪玩凝荷发布了新的文献求助10
10秒前
XXXX发布了新的文献求助10
10秒前
GG发布了新的文献求助30
10秒前
10秒前
平淡的天宇完成签到,获得积分10
11秒前
chenalong完成签到,获得积分10
11秒前
WeiBao发布了新的文献求助30
11秒前
勤奋的热狗完成签到 ,获得积分10
12秒前
13秒前
14秒前
14秒前
FashionBoy应助爱啃大虾采纳,获得10
15秒前
muzi完成签到,获得积分10
15秒前
593完成签到,获得积分10
16秒前
16秒前
Wanghongwei发布了新的文献求助30
17秒前
贪玩凝荷完成签到,获得积分10
17秒前
cindy完成签到,获得积分10
17秒前
疚祠发布了新的文献求助10
17秒前
17秒前
Masetti1完成签到 ,获得积分10
18秒前
高分求助中
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Effective Learning and Mental Wellbeing 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3974856
求助须知:如何正确求助?哪些是违规求助? 3519400
关于积分的说明 11198085
捐赠科研通 3255563
什么是DOI,文献DOI怎么找? 1797860
邀请新用户注册赠送积分活动 877208
科研通“疑难数据库(出版商)”最低求助积分说明 806219