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http://dx.doi.org/10.7855/IJHE.2013.15.1.065

Occupant Risk Analysis of Safety Roller Guardrail with Energy Absorption Capability  

Lee, Dong Woo (영남대학교 건설시스템공학과)
Woo, Kwang Sung (영남대학교 공과대학 건설시스템공학과)
Chae, Jong Sool ((주)금성산업)
Publication Information
International Journal of Highway Engineering / v.15, no.1, 2013 , pp. 65-73 More about this Journal
Abstract
PURPOSES: This paper presents the results of computer simulations of roadside safety barrier, called by safety roller guardrail, consisting of rotational roller, rotation control plate, post and subsidiary members. The rotation roller and rotation control plate are made by EVA(ethylene vinyl acetate), and PE(polyester), respectively. METHODS: The occupant risk analysis has been carried out under vehicle crash condition for high containment level of SB-4 for the purpose of local road. Simulations are performed with the finite element code LS/DYNA-3D. RESULTS: The numerical results obtained by LS/DYNA-3D software from the viewpoints of vehicle stability, vehicle trajectory, occupant risk, etc. CONCLUSIONS: It is noted that not only impact severity is drastically reduced but also vehicle trajectory is improved due to the characteristics of energy absorption and rotation pattern of EVA rollers connected by control plates.
Keywords
safety roller guardrail; LS-DYNA-3D; occupant risk; crash test; energy absorption;
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