Response of multi-grid obstruction block guardrail system under impact loading

XU Ting; MIAO Fuxing; ZHOU Fenghua; YANG Liming

doi:10.11883/bzycj-2016-0354

Volume 38 Issue 4

May 2018

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2018 > 38(4): 820-826

XU Ting, MIAO Fuxing, ZHOU Fenghua, YANG Liming. Response of multi-grid obstruction block guardrail system under impact loading[J]. Explosion And Shock Waves, 2018, 38(4): 820-826. doi: 10.11883/bzycj-2016-0354

Citation:

XU Ting, MIAO Fuxing, ZHOU Fenghua, YANG Liming. Response of multi-grid obstruction block guardrail system under impact loading[J]. Explosion And Shock Waves, 2018, 38(4): 820-826. doi: 10.11883/bzycj-2016-0354

Citation:

PDF( 3625 KB)

Response of multi-grid obstruction block guardrail system under impact loading

doi: 10.11883/bzycj-2016-0354

School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, Zhejiang, China

Received Date: 2016-11-23
Rev Recd Date: 2017-01-06
Publish Date: 2018-07-25

Abstract

Abstract

The thin-wall obstruction block structure plays a significant role in energy absorbing guardrail systems. Research on the methods to improve the guardrail protection capability and minimize the passenger injury becomes increasingly more important. In this paper, using the commercial finite element software ABAQUS, we investigated the response of the single-span multi-grid obstruction block guardrail systems with three different wall thicknesses crashed by a mass block. The simulation results prove that the two-grid obstruction block with a gauge of 2 mm exhibits the best final internal energy mass ratio and energy absorbing density. In addition, the resultant acceleration peak of the 2 mm two-grid model is about 47.6% smaller than that of the 3 mm one-grid model, indicating a better passenger safety performance. According to the Wayne state tolerance curve (WSTC), the deceleration of a human's head is within the safety range for simulation cases. This study provides design guidelines for enhancing a guardrail system's impact resistant ability and safety grade.
- impact response,
- finite element analysis,
- multi-grid obstruction block,
- guardrail system

FullText(HTML)

References(13)

References

[1]	雷正保.大力开展半刚性护栏防撞新机理的研究[J].振动与冲击, 2002, 21(1):1-6. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zdycj200201001 LEI Zhengbao. Research on the new mechanism of collision protection for semi-rigid fences[J]. Journal of Vibration and Shock, 2002, 21(1):1-6. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zdycj200201001
[2]	余同希.利用金属塑性变形原理的碰撞能量吸收装置[J].力学进展, 1986, 16(1):28-39. http://www.oalib.com/paper/4294389 YU Tongxi. Impact energy absorbing devices based upon the plastic deformation of metallic elements[J]. Advances in Mechanics, 1986, 16(1):28-39. http://www.oalib.com/paper/4294389
[3]	余同希.结构的耐撞性和能量吸收装置[J].力学与实践, 1985, 7(3):2-9. http://www.oalib.com/paper/1689907 YU Tongxi. Structural crashworthiness and energy absorber[J]. Mechanics in Engineering, 1985, 7(3):2-9. http://www.oalib.com/paper/1689907
[4]	YU Tongxi, XIANG Yanfei, WANG Min, et al. Key performance indicators of tubes used as energy absorbers[C]//AEPA2014. Gaoxiong, Taiwan, 2014. http://www.scientific.net/KEM.626.155
[5]	沈新普, 杨璐, 郭丽丽, 等.半刚性护栏受冲击载荷时力学行为数值模拟[J].安全与环境学报, 2008, 8(1):134-137. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=aqyhjxb200801037 SHEN Xinpu, YANG Lu, GUO Lili, et al. Numerical simulation of effect of impact on mechanical behavior of strong guardrail system[J]. Journal of Safety and Environment, 2008, 8(1):134-137. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=aqyhjxb200801037
[6]	杜洋, 黄小清, 汤立群.半刚性护栏系统模型冲击实验研究[J].华南理工大学学报(自然科学版), 2003, 31(12):66-70. doi: 10.3321/j.issn:1000-565X.2003.12.017 DU Yang, HUANG Xiaoqing, TANG Liqun. Impact experiment of semi-rigid guardrail system model[J]. Journal of South China University of Technology (Natural Science Edition), 2003, 31(12):66-70. doi: 10.3321/j.issn:1000-565X.2003.12.017
[7]	张科, 唐志平.TiNi柱壳在不同约束下的横向冲击实验[J].爆炸与冲击, 2015, 35(3):296-303. doi: 10.11883/1001-1455-(2015)03-0296-08 ZHANG Ke, TANG Zhiping. Experimental study of TiNi tubes under radial impact with and without lateral constraint[J]. Explosion and Shock Waves, 2015, 35(3):296-303. doi: 10.11883/1001-1455-(2015)03-0296-08
[8]	张晓晴, 黄小清, 汤立群.三跨缩比护栏系统冲击动力响应的有限元分析[J].华南理工大学学报(自然科学版), 2005, 33(10):67-71. doi: 10.3321/j.issn:1000-565X.2005.10.015 ZHANG Xiaoqing, HUANG Xiaoqing, TANG Liqun. Finite element analysis of dynamic response of three-span scaled-down guardrail system under impact loading[J]. Journal of South China University of Technology (Nature Science Edition), 2005, 33(10):67-71. doi: 10.3321/j.issn:1000-565X.2005.10.015
[9]	付锐, 魏朗.汽车碰撞数值模拟中应变率效应问题的讨论[J].中国公路学报, 1999(3):117-121. http://www.cqvip.com/QK/96141X/1999003/3772256.html FU Rui, WEI Lang. Discussion on strain rate effect in numerical simulation of vehicle crash[J]. China Journal of Highway and Transport, 1999(3):117-121. http://www.cqvip.com/QK/96141X/1999003/3772256.html
[10]	BAROUTAJI A, GILCHRIST M D, OLABI A G. Quasi-static, impact and energy absorption of internally nested tubes subjected to lateral loading[J]. Thin-Walled Structures, 2016, 98:337-350. doi: 10.1016/j.tws.2015.10.001
[11]	ROUZEGAR J, ASSAEE H, NIKNEJAD A, et al. Geometrical discontinuities effects on lateral crushing and energy absorption of tubular structures[J]. Materials and Design, 2015, 65(65):343-359. http://www.sciencedirect.com/science/article/pii/S0261306914007432
[12]	交通部公路科学研究所. JTJ074—94高速公路交通安全设施设计及施工技术规范[S]. 北京: 人民交通出版社, 1994.
[13]	MELLANDER H. HIC: the head injury criterion[J]. Acta Neurochirurgica Supplement (Wien), 1986, 36:18-20. doi: 10.1007%2F978-3-7091-8859-0_6