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Journal of Applied Engineering Science
2012, vol. 10, br. 1, str. 1-8
jezik rada: engleski
vrsta rada: izvorni naučni članak
doi:10.5937/jaes10-1471
Metodologija za određivanje zavisnosti između sile i deformacije transportnih sredstava
Univerzitet u Beogradu, Saobraćajni fakultet

e-adresa: radomirm@sf.bg.ac.rs

Projekat

Razvoj modela upravljanja tehničkim stanjem drumskih vozila sa ciljem povećanja energetske efikasnosti i smanjenja emisije izduvnih gasova (MPNTR - 36010)

Sažetak

Softveri za analizu saobraćajnih nezgoda svoj rad baziraju na unapred poznatoj vrednosti koeficijenta restitucije. U praksi je uobičajeno da se numerička vrednost koeficijenta restitucije određuje na osnovu iskustva. Greška u njegovoj proceni uslovljava i nužnu pojavu grešaka u izlaznim rezultatima. Stoga je od izuzetne važnosti što preciznije odrediti njegovu numeričku vrednost. U tom cilju je u radu razvijena metodologija kojom se obezbeđuje analiza procesa sudara u kojoj koeficijent restitucije postaje rezultat, a ne kao što je uobičajeno ulazni podatak. U radu je predložena metodologija za matematičko modeliranje funkcije zavisnosti između sile i deformacije transportnih sredstava koja učestvuju u saobraćajnoj nezgodi. Proces kompresije je modeliran sa više, a proces restitucije sa jednom linearnom funkcijom. Krutost koja odgovara procesu restitucije je definisana u funkciji od maksimalne deformacije koja se javlja tokom procesa kompresije. Kvalitet dobijene funkcije je kvantifikovan preko sume kvadrata greške. Predložena metodologija je na kraju rada i praktično primenjena.

Ključne reči

metodologija; rekonstrukcija; vozila; koeficijent restitucije; greška

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