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Title:Računalniško podprto konstruiranje cestne varnostne ograje
Authors:ID Vesenjak, Matej (Author)
ID Ren, Zoran (Author)
Files:URL http://www.dlib.si/details/URN:NBN:SI:doc-ZSRG5QG4
 
Language:Slovenian
Work type:Not categorized
Typology:1.04 - Professional Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:Cestne varnostne ograje na javnih cestah so namenjene za preprečitev zleta vozila s cestisča ali preboja na nasprotni vozni pas. Evropski standard SIST EN 1317 podaja merila, ki jih mora ograja izpolnjevati pod testno obremenitvijo Dosedanja praktična opažanja kažejo, da je sedanji distančnik cestne varnostne ograje, ki se uporablja v Republiki Sloveniji, pretog. To ima za posledico prevelike pojemke pri naletu osebnega vozila. Zato je določitev primerne oblike distančnika izrednega pomena za povečanje varnosti udeležencev v prometu. Namen raziskave je oblikovanje novega distančnika, ki se bo nadzorovano deformiral in bo zmozen povečati akumulacijo deformacijske energije pri naletu vozil. V ta namen so z uporabo metode končnih elementov analizirane različne oblike distančnikov. V začetni fazi razvoja je analizirana togost različnih oblik distančnikov z navidez statično elasto-plastično analizo trirazsežnega modela odseka varnostne ograje. Ugotovljeno je, da ima sedanji distančnik zelo veliko togost in da so distančniki novih oblik zmozni večje, nadzorovane elasto-plastične deformacije pri naletu vozil.
Publisher:Association of Mechanical Engineers and Technicians of Slovenia et al.
Year of publishing:2003
Number of pages:str. 509-519
Numbering:Letn. 49, št. 10
PID:20.500.12556/DKUM-53080 New window
UDC:004.94:625.746
ISSN on article:0039-2480
COBISS.SI-ID:6945051 New window
NUK URN:URN:SI:UM:DK:KWRB21S5
Publication date in DKUM:10.07.2015
Views:1854
Downloads:71
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
ISSN:0039-2480
COBISS.SI-ID:762116 New window

Secondary language

Language:English
Title:Computer-aided design of a road restraint barrier
Abstract:Road restraint barriers on public roads are used to prevent a vehicle from veering off the road or breaking through on to the opposite carriageway. The European standard SIST EN 1317 specifies the criteria that the road restraint barrier has to meet during testing. Practical observations have shown that thedistance spacer currently used in the road restraint barriers in Slovenia is too stiff. This results in too rapid decelerations during vehicle impact. Designing an improved distance spacer is therefore extremely important for increasing the safety of vehicle occupants. The purpose of this research was to design a new distance spacer that deforms in a controllable manner and has an increased capacity for strain-energy absorption during vehicle impact. The new designs were analyzed with the finite-element method. In the initial phaseof the research, the stiffness of various designs of distance spacer was analyzed using quasi-static elastic-plastic analyses of a three-dimensional road-restraint-barrier model. It was found that the currently used distance spacer is indeed much too stiff and that new distance-spacer designs are capable of larger, controllable elastic-plastic deformation during vehicle impact.
Keywords:roadside safety, road restraint barriers, computer aided design, numerical simulations, neolinear simulations


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