Simulacija naleta tovornega vozila ob cestno varnostno ograjo

Matej Borovinšek (Author), Matej Vesenjak (Author), Miran Ulbin (Author), Zoran Ren (Author)

Abstract

Cestno varnost lahko izboljšamo s postavitvijo cestnih varnostnih ograj, ki preprečujejo udeležencem cestnega prometa vstop v nevarna območja. Za dvig stopnje varnosti morajo biti cestne varnostne ograje oblikovane tako, da pri naletu vozila le-to preusmerijo nazaj na cestišče. Med preusmerjanjem vozila morajo s svojo deformacijo absorbirati čim večjo količino kinetične energije, da se zmanjšajo pojemki potnikov v vozilu. V prispevku je predstavljena računalniška simulacija naleta tovornega vozila ob cestno varnostno ograjo. Izvedene so bile parametrične računalniške analize za oceno primernosti različnih dodatnih elementov varnostne ograje. Za izvajanje eksplicitnih dinamičnih analiz je bil uporabljen program LS-DYNA. Računalniske simulacije dokazujejo, da je nosilnost analizirane ograje dovolj velika, da tovornjak zadrži in preusmeri nazaj na cestišče. Hkrati pa se pokaze tudi ustrezno visoka stopnja akumulacije kinetične energije vozila v obliki deformacije cestne varnostne ograje, kar zmanjša pojemke vozila in se kaže v povečani stopnji varnosti za potnike v vozilu.

Keywords

analize trkov;LS-DYNA;ograje varnostne;prometna varnost;prometne nesreče;simuliranje dinamično;trki vozil;varnost na cestah;varnostne ograje

Data

Language:	Slovenian
Year of publishing:	2006
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
Publisher:	Association of Mechanical Engineers and Technicians of Slovenia et al.
UDC:	625.745.5:656.08
COBISS:	9188635
ISSN:	0039-2480
Parent publication:	Strojniški vestnik
Views:	506
Downloads:	39
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Simulating the impact of a truck on a road-safety barrier
Secondary abstract:	Road safety can be improved by applying appropriate road-safety barriers that prevent road-traffic participants from entering dangerous areas. In terms of preventing vehicles from veering off the road, a road-safety barrier should redirect the impacting vehicle back onto the road. In the process of doing so it should absorb as much of the vehicle's kinetic energy as possible through its deformation, so reducing the deceleration of the vehiclećs occupants. This paper considers a computer simulation of a truck's impact on a steel road-safety barrier. Parametric computer simulations were used to evaluate the different additional safety elements of the road-safety barrier. The dynamic finite-element explicit code LS-DYNA was used for this purpose. The computer simulations prove that the analyzed road-safety barrier design is strong enough to retain and redirect the truck back onto the roadway. Appropriately, the high absorption of the impacting vehicle's kinetic energy through the safety-barrier deformation is observed at the same time, which indicates a reduction in a vehicle's deceleration, and with that, a higher safety level for the vehicle's occupants.
Secondary keywords:	road safety;road safety barrier;impact simulations;dynamic simulations;LS-DYNA;varnost na cestah;ograje varnostne;analize trkov;simuliranje dinamično;
URN:	URN:NBN:SI
Type (COBISS):	Not categorized
Pages:	str. 101-111
Volume:	ǂLetn. ǂ52
Issue:	ǂšt. ǂ2
Chronology:	2006
ID:	1741419