Numerical simulation of roadside safety barrier for crashworthiness assessment

Nowadays, even with modern traffic safety regulations, some high risk accidents still occur. Many fatal injuries or even death accidents occur to road users. The research of safety levels for all road users has been developed over the years. Roadside safety barrier is one of the systems that have b...

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Main Author:	Rahmad Paruhum, Nasution
Format:	Thesis
Language:	English
Subjects:	Roadside safety barrier Safety barrier Accidents > Prevention Numerical simulation Simulation test
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/40571/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/40571/2/Full%20text.pdf
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id	my-unimap-40571
record_format	uketd_dc
spelling	my-unimap-405712015-11-09T06:52:19Z Numerical simulation of roadside safety barrier for crashworthiness assessment Rahmad Paruhum, Nasution Nowadays, even with modern traffic safety regulations, some high risk accidents still occur. Many fatal injuries or even death accidents occur to road users. The research of safety levels for all road users has been developed over the years. Roadside safety barrier is one of the systems that have been developed to reduce number of fatal injuries. In order to employ the suitable safety barrier at a referred location several test must be perform. Many of these tests only focused in a high velocity impact because it is considered that high speed impact can cause major injury to the occupant, damage to the safety barrier structure and also vehicle. Because of this consideration minor research has been perform for low vehicle velocity. However low velocity impact can also cause injuries to the occupants and damage to the vehicle and safety barrier structure. The objective of this study is to perform impact simulation on low vehicle velocity and analyze the occupant injury risks, safety barrier structure and concrete foundation failure criteria. The crash simulation is between W-beam type safety barrier to a light vehicle applied with three types of impact velocities (40, 60 and 80 m/hour). The situation model of the crash refers to a real road profile located at Jamin Ginting Street, Medan, Indonesia. The simulation models consist of four main parts that are roadside safety barrier, concrete foundation, light vehicle and the road. American Association of State Highway and Transportation Officials (AASHTO) specification was used to develop the safety barrier models. All the main parts were developed from CAD software then exported to Finite Element Analysis (FEA) software. The simulations are carried out using LS DYNA, commercial FEA software. The foundation of the W–Beam barrier and the occupant injury risks were analyzed. During the impact the maximum load that occurred at the foundation was below the allowable load. The Acceleration Severity Index (ASI) value of all impact velocities was still at the acceptable range. Universiti Malaysia Perlis (UniMAP) 2011 Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/40571 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/40571/1/Page%201-24.pdf 0172091dfccaf7146713e3c09769472f http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/40571/2/Full%20text.pdf 30b17b2e9a4d56fce8f890149a6a6a5a http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/40571/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Roadside safety barrier Safety barrier Accidents -- Prevention Numerical simulation Simulation test School of Mechatronic Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
topic	Roadside safety barrier Safety barrier Accidents -- Prevention Numerical simulation Simulation test
spellingShingle	Roadside safety barrier Safety barrier Accidents -- Prevention Numerical simulation Simulation test Rahmad Paruhum, Nasution Numerical simulation of roadside safety barrier for crashworthiness assessment
description	Nowadays, even with modern traffic safety regulations, some high risk accidents still occur. Many fatal injuries or even death accidents occur to road users. The research of safety levels for all road users has been developed over the years. Roadside safety barrier is one of the systems that have been developed to reduce number of fatal injuries. In order to employ the suitable safety barrier at a referred location several test must be perform. Many of these tests only focused in a high velocity impact because it is considered that high speed impact can cause major injury to the occupant, damage to the safety barrier structure and also vehicle. Because of this consideration minor research has been perform for low vehicle velocity. However low velocity impact can also cause injuries to the occupants and damage to the vehicle and safety barrier structure. The objective of this study is to perform impact simulation on low vehicle velocity and analyze the occupant injury risks, safety barrier structure and concrete foundation failure criteria. The crash simulation is between W-beam type safety barrier to a light vehicle applied with three types of impact velocities (40, 60 and 80 m/hour). The situation model of the crash refers to a real road profile located at Jamin Ginting Street, Medan, Indonesia. The simulation models consist of four main parts that are roadside safety barrier, concrete foundation, light vehicle and the road. American Association of State Highway and Transportation Officials (AASHTO) specification was used to develop the safety barrier models. All the main parts were developed from CAD software then exported to Finite Element Analysis (FEA) software. The simulations are carried out using LS DYNA, commercial FEA software. The foundation of the W–Beam barrier and the occupant injury risks were analyzed. During the impact the maximum load that occurred at the foundation was below the allowable load. The Acceleration Severity Index (ASI) value of all impact velocities was still at the acceptable range.
format	Thesis
author	Rahmad Paruhum, Nasution
author_facet	Rahmad Paruhum, Nasution
author_sort	Rahmad Paruhum, Nasution
title	Numerical simulation of roadside safety barrier for crashworthiness assessment
title_short	Numerical simulation of roadside safety barrier for crashworthiness assessment
title_full	Numerical simulation of roadside safety barrier for crashworthiness assessment
title_fullStr	Numerical simulation of roadside safety barrier for crashworthiness assessment
title_full_unstemmed	Numerical simulation of roadside safety barrier for crashworthiness assessment
title_sort	numerical simulation of roadside safety barrier for crashworthiness assessment
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Mechatronic Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/40571/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/40571/2/Full%20text.pdf
_version_	1747836808792637440

Numerical simulation of roadside safety barrier for crashworthiness assessment

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