Ciofoaia, Vasile

Gálfi, Botond-Pál

Popa, Sorin Codrel

Procop, Miron

Roşca, Ioan Călin

Száva, Ioan

Tutunea, Remus

English

DSpace at VSB Technical University of Ostrava

I I ·t v:.··: ei w � � :L:.f ,_ Sborník vědeckj1ch prací Vysoké školy báňské - Technické un;:iv:e:rz:-;i:;t):;-' ;:0;:s;tr�a::,:,a:-.:::_�__;� číslo 3, rok 2009, ročník Ul, řada hutnická, článek č. 1558 Miron PROCOP1, Botond-Pál GÁLFI 1, loan SZÁ V A 1, loan Ciilin RO�CA 1, Vasile CIOFOAIA„ Sorin Codrel POPA 1 , Remus TUTUNEA2 • EXPERIMENT AL RES UL TS ON ELASTIC BEHA VlORS OF COUPLING SYSTEM'S COMPONENTS EXPERIMENTÁLNÍ VÝSLEDKY ELASTICKÉHO CHOVÁNÍ SPOJENÝCH KOMPONENT Transilvania University of Brusov Abstract The authors conceived and reaHzed an original testing <levice destined to anaiyze the elastic elements from a special (patented) coupling system. This coupling system allows the changing of the deteriorated elastic elements without taking to pieces of the whole coupling syslem. The analyzed elastic elements are paralelipiped shape rubber, respectively Polyurethane part. These elements' elastic properties determine the whole coupling syslem's behaviors. The original testing <levice main components are an electric strain gage transducer for force (load) evaluation, respectively a number of elastic steel lamellas, foreseen with electric strain gages, for displacement evaluation. Using this original testing <levice, the authors established the eiastic behaviors of the above mentioned elements parts. Key words: coupling syslem, rubber, elastic elements 1. IntroductionThe rubber components used in machine design are selected, between others, after theirelasticity, fatigue strength, respectively their hysteretic behaviours. ln the first few number cycles, the rubber specimens have a large bysteretic area, but after their interna!, irreversible structural cbanging, will present a reduced hysteretic area. ln the calculus are taken into consideration only these last properties. Due to the fact that up to 400 % strain their volume is practically constant, the Poisson ratio will be taken v = 0.5, and the elastic modules will be connected by relation E = 3 · G.ln conclusion, in cases of the relatively small defonnations, the rubber stiffness will depend on a single elastic constant ( E ) and the condition of the constant volume wiJt be described by 6_,. +&_,.+&z =O. (l)When we intend to detennine the value of E, first we'II establish the value corresponding to the static toading conditions Es,atic, and only after then the adequate dynamical one Edyn .ln case ofdeformations over I 0% of the specimen 's height, will be used the large deformations ' hypothesis. ln this case, for the compressed specimens will be used the relation F = J_ _ E ·A·(_!_-AJ,3 ,12 (2) 185 

Experimentální výsledky elastického chování spojených komponent

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Experimentální výsledky elastického chování spojených komponent

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