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Titolo:
Nonlinear collision analysis of heavy trucks onto steel highway guard fences
Autore:
Itoh, Y; Liu, CL; Usami, K;
Indirizzi:
Nagoya Univ, Ctr Integrated Res Sci & Engn, Nagoya, Aichi 4648603, Japan Nagoya Univ Nagoya Aichi Japan 4648603 Engn, Nagoya, Aichi 4648603, Japan Nagoya Univ, Dept Civil Engn, Nagoya, Aichi 4648603, Japan Nagoya Univ Nagoya Aichi Japan 4648603 Engn, Nagoya, Aichi 4648603, Japan
Titolo Testata:
STRUCTURAL ENGINEERING AND MECHANICS
fascicolo: 5, volume: 12, anno: 2001,
pagine: 541 - 558
SICI:
1225-4568(200111)12:5<541:NCAOHT>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
SIMULATION;
Keywords:
dynamic analysis; energy absorption; finite element method; guard fence; heavy truck; non-linear analysis; vehicle collision impact;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Itoh, Y Nagoya Univ, Ctr Integrated Res Sci & Engn, Nagoya, Aichi 4648603,Japan Nagoya Univ Nagoya Aichi Japan 4648603 goya, Aichi 4648603, Japan
Citazione:
Y. Itoh et al., "Nonlinear collision analysis of heavy trucks onto steel highway guard fences", STRUC ENG M, 12(5), 2001, pp. 541-558

Abstract

The design specifications of guard fences in Japan were reexamined and therevised specifications were implemented from April 1999. Because of the huge consumption in time and cost to test the performances of full-scale guard fences in the field, some assumptions are adopted while modifying the design specifications, and numerical analyses are necessary to confirm the impact performance and safety level of new types of steel highway guard fences. In this study, the finite element models are developed for the heavy trucks and steel highway guard fences to reenact their behaviors, and the solution approach is carried out using nonlinear dynamic analysis software of structures in three dimensions (LS-DYNA). The numerical simulation results are compared with the full-scale on-site testing results to verify the proposed analysis procedure. The collision process is simulated and it is also made possible to visualize the movement of the truck and the performances of guard fences. In addition, the energy shift of the truck kinetic energy to the truck and guard fence Internal energy, and the energy absorption of each guard fence component are studied for the development of a new design methodology of steel highway guard fences based on the energy absorption capacity.

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Documento generato il 26/09/20 alle ore 09:45:32