Browse > Article
http://dx.doi.org/10.5762/KAIS.2015.16.12.8966

Impact Performance of Crashworthy Post Utilizing Conservation of Linear Momentum  

Ko, Man-Gi (Department of Civil & Environmental Engineering, Kongju National University)
Kim, Kee-Dong (Department of Civil & Environmental Engineering, Kongju National University)
No, Min-Hyung (Department of Civil & Environmental Engineering, Kongju National University)
Yun, Duk-Geun (Highway and Transportation Research Institute, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.16, no.12, 2015 , pp. 8966-8976 More about this Journal
Abstract
Unshielded posts on roadside are a critical hazard to the safety of impact vehicle to the posts. A crashworthy post is developed. In the first phase, it dissipates the impact energy by the linear momentum conservation principle while the plastic impact between the post and vehicle takes place, then, the second phase dissipation follows by the deformation of the energy absorbing modules embedded in the guide trough of the foundation. Simulations of impacts to a rigidly connected post and crashworthy post were made using LS-DYNA program, which demonstrated the danger of unshielded rigidly connected post and the effectiveness of the proposed crashworthy post to the 0.9ton-80km/h impact.
Keywords
Crashworthy Post; Energy Dissipation; Impact; Momentum Conservation; Simulation;
Citations & Related Records
연도 인용수 순위
  • Reference
1 KOROD, "2005 Traffic Accident Statistics", 2005
2 American Association of State Highway and Transportation Officials, "Roadside Design Guide", Washington, D.C., 2011
3 Department of Infrastructure, Energy and Resources, "Road Hazard Management Guide" RO-96-SC.204, Autralia, Tasmania, 1996
4 "Roadside Design Guide" Alberta Infrastructure and Transportation, Edmonton, AB, 2013
5 RISER D07 - Summary of Maintenance and Operational Procedures for Roadside Infrastructure, European Community R&TD Project, 5th Framework Programme "Growth", Project "RISER" GRD2/2001/50088, 2006
6 EN12767 : 2007, "Passive Safety of Support Structure for Road Equipment-Requirements, Classification and Test Methods," CEN, 2007
7 MOLIT, "Roadside Design and Management", 2014
8 MOLIT, "Statistics, Integrated Management Center for Road Signs", 2015
9 Hallquist, J.O., "LS-DYNA Theoretical Manual", Livermore Software Technology Corporation, Livermore, CA, 2001.
10 LSTC, "LS-DYNA Keyword User's Manual", Livemore Software Techonology Corporation, 2001
11 FHWA/NHTSA National Crash Analysis Center, "Finite Element Model of Dodge Neon", 1996
12 NCAC Public Finite Element Model Archive, "FHWA/NHTSA National Crash Analysis Center website page(www.ncac.gwu.edu)", Washington, D.C., 2000
13 Engineering Mechanics-Dynamics, A. Bedford, W. Fowler, Addison-Wesley Company, Inc., pp186-208, 1995
14 Engineering Mechanics-Dynamics, W.F. Riley, L. D. Sturges, John Wiley & Sons, Inc., pp429-453, 1996