Crash analysis and evaluation of a new separate W-beam guardrail on highways using the finite element method

撞车 梁(结构) 碰撞 结构工程 工程类 LS-DYNA系列 有限元法 加速度 汽车工程 计算机科学 物理 计算机安全 经典力学 程序设计语言
作者
Hanfeng Yin,Lizhou Zhang,Zhipeng Liu,Wei Fan,X. Wu,Guilin Wen
出处
期刊:Engineering Structures [Elsevier BV]
卷期号:278: 115551-115551
标识
DOI:10.1016/j.engstruct.2022.115551
摘要

In terms of highway traffic safety, the W-beam guardrail plays an essential role in absorbing impact energy, reducing occupant acceleration peaks, and redirecting the vehicle in the correct direction. In this study, a new separate W-beam guardrail named “SWG” composed of separate posts connected by bolts was invented to improve the safety performance of the guardrail. The new W-beam guardrail was compared with the traditional W-beam guardrail (TWG) by the finite element simulation method. The exit box criteria, occupant impact velocity (OIV), and occupant ride down acceleration (ORA) are utilized to evaluate occupant safety and injury risk. The collision results reveal that the new W-beam guardrail performs better than the TWG and can effectively reduce the injury of the occupants and correct the driving direction of the out-of-control vehicle during the crash with a 1996 Dodge Neon and a 2007 Chevy Silverado, respectively. Additionally, it is found that the strength and installation of the bolts and the working width significantly affect the safety performance of the new W-beam guardrail. After conducting multiple sets of simulation tests, the optimal guardrail design meeting the requirements of the Neon and the Silverado is obtained. In this design, the values of OIVmax and ORAmax are 6.27 m/s and 50.3 m/s2 for Neon, and 4.57 m/s and 66.3 m/s2 for Silverado, respectively. Both vehicles can be guided out of the guardrail in the exit box criteria to avoid snagging.

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
yx_cheng应助lilila666采纳,获得30
刚刚
2秒前
2秒前
3秒前
5秒前
Xiaoyang完成签到,获得积分10
5秒前
loski发布了新的文献求助10
5秒前
6秒前
虚心月饼发布了新的文献求助10
7秒前
8秒前
Lucas应助123采纳,获得10
10秒前
香蕉觅云应助KIORking采纳,获得10
11秒前
11秒前
Liufgui应助执着又蓝采纳,获得20
12秒前
12秒前
正直水池完成签到 ,获得积分10
12秒前
12秒前
阿克完成签到,获得积分10
12秒前
一方通行发布了新的文献求助10
13秒前
perovskite完成签到,获得积分10
13秒前
如梦如幻91完成签到,获得积分10
13秒前
13秒前
13秒前
妮露的修狗完成签到,获得积分10
14秒前
15秒前
16秒前
文献发布了新的文献求助30
18秒前
无花果应助我不吃胡萝卜采纳,获得10
19秒前
19秒前
20秒前
自信的电灯胆完成签到,获得积分20
20秒前
量子星尘发布了新的文献求助10
21秒前
22秒前
23秒前
清辉夜凝发布了新的文献求助10
23秒前
25秒前
少敏敏发布了新的文献求助10
26秒前
27秒前
嘻哈发布了新的文献求助10
29秒前
苏y发布了新的文献求助10
29秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
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 3989378
求助须知:如何正确求助?哪些是违规求助? 3531442
关于积分的说明 11254002
捐赠科研通 3270126
什么是DOI,文献DOI怎么找? 1804887
邀请新用户注册赠送积分活动 882087
科研通“疑难数据库(出版商)”最低求助积分说明 809173