Da pa ne boste mislili, da je National Geographic naredil oddajo kar tako, v "tri dni", je potrebno povedati, da poteka po svetu kar nekaj raziskav s področja znanosti o trkih vlakov...nič kaj dosti manj kot o trkih v cestnem prometu...
Za primer ena raziskava na Japonskem:
Numerične metode za analizo trkov vlakov z uporabo končnih elementov in simulacijo sistema večih teles...
Numerical method for train crash analysis using FEM and MBS simulation
Author; UJITA YASUSHI (Railw. Tech. Res. Inst.) OKINO TOMOHIRO (Railw. Tech. Res. Inst.) KATO YUKIO (Railw. Tech. Res. Inst.) FUNATSU KOJI (Railw. Tech. Res. Inst.) MATSUI JUN (Aruteaenjiniaringu)
Journal Title;Nihon Kikai Gakkai Kanto Shibu Sokai Koen Ronbunshu
Journal Code:L3954A
ISSN:
VOL.12th;NO.;PAGE.261-262(2006)
Figure&Table&Reference;FIG.7, REF.3
Pub. Country;Japan
Language;Japanese
Abstract;Real size carbodies of railway vehicles were tested under static compression load in order to evaluate crush behavior at train collision accidents. A light weight stainless steel carbody structure was the target of this study. The FE analysis was carried out to validate the compression tests. These results provided the compression load versus deformation characteristics of the end structures of rail-car bodies. The multi-body system (MBS) model was also used to simulate the train crash behavior. The load versus deformation curve by the compression tests and FE analysis was introduced to the non-linear spring characteristics. The result by the MBS simulation shows the typical behavior of rakes at accidents, i.e. overriding phenomena of the vehicles involved in the collision. (author abst.)
Z zgornjim člankom si ne moremo pomagati, ker je v japonščini. Tisti, ki hoče kaj več zvedeti o teh raziskavah, mora poiskati gradiva kongresov, kamor pridejo predavat tudi Japonci v angleščini. Takšni članki so plačljivi (okoli 15 €).
Hotel sem samo povdariti, da raziskave potekajo po celem svetu in ne samo v Evropi...
FEM (Finite element method) ...metoda končnih elementov
link do wikipedije:
http://en.wikipedia.org/wiki/Finite_element_method
MBS (multi-body system)...sistem večih teles
link do wikipedije:
http://en.wikipedia.org/wiki/Multibody_system
tale zadnja MBS simulacija je za parni loby: Tono & Co.
