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The effect of weak shear webs on the deformations of timber box type beams
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och -produktion.ORCID-id: 0000-0002-7191-5609
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.ORCID-id: 0000-0002-0336-6433
University of Europeenne Bretagne, Laboratory Genie Civil & Genie Mecan, Université Européenne de Bretagne, Mechanics Division, Department of Mathematics, University of Oslo, LIMATB, Université Européenne de Bretagne, University of South Brittany, Lorient.
Antal upphovsmän: 32015 (Engelska)Ingår i: Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing / [ed] J. Kruis; Y. Tsompanakis; B.H.V. Topping, Stirlingshire: Civil-Comp Press , 2015, artikel-id 259Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

This paper deals with deflection analysis of a deep composite box beam due to inplane shear deformations, especially the modelling of the shear deformations in the webs is considered. The beam is composed of three framing members with sheathings on both sides. The sheathings or webs between the framing members are modelled as shear media with equivalent slip moduli corresponding to the partially composite beam model with three separated layers and two interlayer slip areas. The minimum total potential energy principle is employed to obtain the governing equilibrium equations and corresponding boundary conditions. The coupled set of governing equations is recast into an uncoupled form and solved explicitly together with the corresponding boundary conditions. The closed-form solutions obtained are compared to those based on the conventional beam theories. It is shown that the model is capable of predicting accurately the deflections for a wide range of geometry and property parameters, especially for small shear stiffness (slip modulus) values for the webs. The formula for the deflection is reduced to the Timoshenko formula for full composite interaction when the shear slip modulus of the web approaches infinity. Comparative numerical results are presented to show the influence of bending deformations, shear deformations in the framing layers and the in-plane shear deformations in the sheathings

Ort, förlag, år, upplaga, sidor
Stirlingshire: Civil-Comp Press , 2015. artikel-id 259
Serie
Civil-Comp Proceedings, ISSN 1759-3433 ; 108
Nationell ämneskategori
Husbyggnad
Forskningsämne
Träbyggnad
Identifikatorer
URN: urn:nbn:se:ltu:diva-40069Scopus ID: 2-s2.0-85013361038Lokalt ID: f0cbceb4-5732-4866-babe-a45a27c5e238OAI: oai:DiVA.org:ltu-40069DiVA, id: diva2:1013592
Konferens
International Conference on Civil, Structural and Environmental Engineering Computing : 01/09/2015 - 04/09/2015
Anmärkning

Godkänd; 2015; 20160511 (andbra)

Tillgänglig från: 2016-10-03 Skapad: 2016-10-03 Senast uppdaterad: 2018-06-11Bibliografiskt granskad

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Atashipour, Seyed RasoulGirhammar, Ulf Arne

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