Performance evaluation of NCDOT w-beam guardrails under MASH TL-2 conditions.

Fang, Howie; Gutowski, Matthew; Li, Ning; DiSogra, Matthew; University of North Carolina at Charlotte. Dept. of Mechanical Engineering and Engineering Science

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Performance evaluation of NCDOT w-beam guardrails under MASH TL-2 conditions.

2013-11-01
By Fang, Howie ; Gutowski, Matthew ; Li, Ning ; ...

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Details:

Creators:

Fang, Howie ; Gutowski, Matthew ; Li, Ning ; DiSogra, Matthew

Fang, Howie ; Gutowski, Matthew ; Li, Ning ; DiSogra, Matthew Less -
Corporate Creators:

University of North Carolina at Charlotte. Dept. of Mechanical Engineering and Engineering Science
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Finite Element Method Guardrails Height Highway Safety Impact Tests Literature Reviews Median Barriers Simulation
Publication/ Report Number:

FHWA/NC/2012-11
Resource Type:

Tech Report
Geographical Coverage:

North Carolina
Corporate Publisher:

North Carolina. Dept. of Transportation
Abstract:

This report summarizes the research efforts of using finite element modeling and simulations to evaluate the performance

of W-beam guardrails for different heights under MASH Test Level 2 (TL-2) and Test Level 3 (TL-3) impact conditions. A

literature review is included on performance evaluation of W-beam guardrails as well as applications of finite element

modeling and simulations in roadside safety research.

The modeling and simulation work was conducted on W-beam guardrails placed at a height of 27, 29 and 31 inches with

vehicular impacts of a 1996 Dodge Neon and a 2006 Ford F250. All three W-beam guardrail placement heights were

evaluated and compared to MASH TL-2 conditions, i.e., both vehicles were tested at an impact speed of 44 mph (70

km/hour) and a 25 impact angle. The 29- and 31-inch W-beam guardrails were also evaluated under MASH TL-3

conditions, i.e., both vehicles were tested at an impact speed of 62 mph (100 km/hour) and a 25 impact angle.

The simulation results demonstrated the effectiveness of the 27-, 29- and 31-inch guardrails under MASH TL-2

conditions. They also showed the effects of guardrail heights on the vehicles’ post-impact responses such as redirection,

snagging and large exit angles. The use of finite element simulations was shown to be both effective and efficient because

they were nondestructive, repeatable, modifiable, and inexpensive. Furthermore, finite element simulations can be used to

study crash scenarios that are difficult and/or extremely expensive to conduct with physical crash testing. Finite element

modeling and simulations are recommended for future investigations of other research issues.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:f7eed12fe84a27f77cf031e47050ae4296ad304faed6a13ef09ad019546fb55c
Download URL:

https://rosap.ntl.bts.gov/view/dot/26828/dot_26828_DS1.pdf
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Performance evaluation of NCDOT w-beam guardrails under MASH TL-2 conditions.

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