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A simplified model for predicting the behavior of metal-clad, wood-framed diaphragms
When horizontal loads act on a building, the roof and/or ceiling can transfer some of the loads to supporting walls through in-plane shear. This phenomenon is called diaphragm action. A simplified finite element model, FEM, of a metal-clad, wood-framed diaphragm panel was investigated. The simplified FEM results were compared with test results and comprehensive FEM results. The average measured design shear stiffness and strength for the diaphragm panels were 2.48 kN/mm and 1.88 kN/m (14170 lb/in. and 128.8 lb/ft), respectively. The simplified FEM, based on the Davies (1977) model, predicted the diaphragm shear stiffness to within 20 % of experimental values while the comprehensive FEM, developed by Wright (1992), predicted the diaphragm shear stiffness to within 28 % of experimental values. The simplified FEM predicted the diaphragm shear strength to within 51 % while Wright's comprehensive FEM and the analytical method of Bryan and Davies (1982) both predicted the diaphragm shear strength to within 4 % of experimental values. Thus, the simplified model was suitable for predicting the load-deflection behavior in the linear region, but was not suitable in the nonlinear region.
A simplified model for predicting the behavior of metal-clad, wood-framed diaphragms
When horizontal loads act on a building, the roof and/or ceiling can transfer some of the loads to supporting walls through in-plane shear. This phenomenon is called diaphragm action. A simplified finite element model, FEM, of a metal-clad, wood-framed diaphragm panel was investigated. The simplified FEM results were compared with test results and comprehensive FEM results. The average measured design shear stiffness and strength for the diaphragm panels were 2.48 kN/mm and 1.88 kN/m (14170 lb/in. and 128.8 lb/ft), respectively. The simplified FEM, based on the Davies (1977) model, predicted the diaphragm shear stiffness to within 20 % of experimental values while the comprehensive FEM, developed by Wright (1992), predicted the diaphragm shear stiffness to within 28 % of experimental values. The simplified FEM predicted the diaphragm shear strength to within 51 % while Wright's comprehensive FEM and the analytical method of Bryan and Davies (1982) both predicted the diaphragm shear strength to within 4 % of experimental values. Thus, the simplified model was suitable for predicting the load-deflection behavior in the linear region, but was not suitable in the nonlinear region.
A simplified model for predicting the behavior of metal-clad, wood-framed diaphragms
Ein vereinfachtes Modell zur Vorhersage des Verhaltens von metallbeschlagenen Trennwänden mit Holzrahmen
Keener, J.D. (author) / Manbeck, H.B. (author)
Transactions of the ASAE ; 39 ; 1113-1122
1996
10 Seiten, 16 Bilder, 3 Tabellen, 16 Quellen
Article (Journal)
English
Lateral Load Sharing by Diaphragms in Wood-Framed Buildings.
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