Bojan Čas (Author)

Abstract

V članku analiziramo vpliv zdrsa med slojema na mehansko obnašanje dvoslojnih kompozitnih prostorskih nosilcev. Podrobno nas zanima predvsem vpliv podajnosti stika slojev na razporeditev in velikost strižnih napetosti v prečnih prerezih dvoslojnih lesenih nosilcev. Strižne napetosti v slojih izračunamo na tri načine: (i) z razvitim matematičnim modelom in pripadajočimi analitičnimi rešitvami, (ii) z računsko metodo, kot jo predlaga veljavna zakonodaja s področja lesenih konstrukcij, standard Evrokod 5 [SIST, 2005], ter (iii) s predlagano modificirano enačbo omenjenega standarda za izračun strižnih napetosti. Primerjava razporeditve in velikosti strižnih napetosti v slojih je pokazala dobro ujemanje med rezultati matematičnega modela ter rezultati ustrezno modificirane enačbe standarda Evrokod 5 [SIST, 2005].

Keywords

3D-nosilci;elastičnost;kompoziti;zdrs;les;analitična rešitev;strižne napetosti;

Data

Language: Slovenian
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
UDC: 624.011.1+624.042
COBISS: 41762819 Link will open in a new window
ISSN: 0017-2774
Parent publication: Gradbeni vestnik
Views: 2087
Downloads: 244
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Other data

Secondary language: English
Secondary title: Shear stresses in elastic timber composite two-layer beams with interlayer slips
Secondary abstract: This article focuses on three-dimensional two-layer composite beams with slips between the layers. The effect of contact stiffness on shear stresses in composite beam cross-section is studied in detail. Shear stresses are calculated by the application of: (i) a presented mathematical model with analytical solution, (ii) calculation method for layered timber beams with interlayer slips, as proposed by Eurocode 5 [SIST, 2005] and (iii) a suggested modified equation of the abovementioned standard for the calculation of shear stresses in timber composite beam cross-section. The comparison of the distribution and values of shear stresses in composite cross-section shows a good agreement of the results obtained by the presented mathematical model with the results calculated by the proposed modified Eurocode 5 [SIST, 2005] equation.
Secondary keywords: 3D beams;elasticity;composites;slip;timber;analytical solution;shear stress;
Type (COBISS): Article
Pages: str. 286-295
Issue: ǂLetn. ǂ69
Chronology: nov. 2020
ID: 12553457