Estudo experimental de ligações aparafusadas autoperfurantes de chapas finas a temperaturas elevadas

Parente, Armandino; Mesquita, L.M.R.

Publication

Estudo experimental de ligações aparafusadas autoperfurantes de chapas finas a temperaturas elevadas

2016Conference object

dc.contributor.author	Parente, Armandino
dc.contributor.author	Mesquita, L.M.R.
dc.date.accessioned	2018-04-09T08:29:24Z
dc.date.available	2018-04-09T08:29:24Z
dc.date.issued	2016
dc.description.abstract	Cold-formed steel structural members have been used widely in steel construction, mainly due to its high structural efficiency and constructions times. Because these elements are usually thin sheet profiles the structural connections by self-tapping screws and self-drilling screws are the most used. For the self-drilling screwed connections, considering that the steel sheets range between 0.5 and 3 [mm], the joint is made without the need of opening a hole. These connections behave differently than the conventional bolted connections. In the case of self-drilling screwed connections of thin steel sheets, the joint collapse load is usually determined by the bearing resistance of the plates, and only in thicker plates by the screw shear resistance. This distinction is even more noticeable in the case of structures under fire conditions. This work presents a numerical study of the behaviour of cold-formed thin steel sheeting screwed connections at room temperature and high temperatures. The study comprises a parametric analysis, considering: (i) different high temperature values; (ii) cold-formed steel grades; (iii) board effect of the screw position; (iv) and different steel sheet thicknesses. The structural model used in the numerical simulations, by the finite elements method, consider both implicit and explicit dynamics simulations of the connection behaviour. The simulations are performed in the Ansys® software considering geometric and material non-linear analysis and an Augmented Lagrange Formulation to model the frictional contact between surfaces. The numerical results are compared with the simplified calculation method presented in the European standards.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Parente, Armandino; Mesquita, L.M.R. (2016) -Estudo experimental de ligações aparafusadas autoperfurantes de chapas finas a temperaturas elevadas. In IV Encontro de Jovens Investigadores do Instituto Politécnico de Bragança. Bragança, Portugal	pt_PT
dc.identifier.uri	http://hdl.handle.net/10198/16755
dc.language.iso	por	pt_PT
dc.peerreviewed	yes	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Thin sheet connections	pt_PT
dc.subject	Self-drilling screws	pt_PT
dc.subject	Screwed connections	pt_PT
dc.subject	Finite element modelling	pt_PT
dc.subject	High temperatures	pt_PT
dc.title	Estudo experimental de ligações aparafusadas autoperfurantes de chapas finas a temperaturas elevadas	pt_PT
dc.type	conference object
dspace.entity.type	Publication
oaire.citation.conferencePlace	Bragança, Portugal	pt_PT
oaire.citation.title	IV Encontro de Jovens Investigadores do Instituto Politécnico de Bragança	pt_PT
person.familyName	Mesquita
person.givenName	Luís M.R.
person.identifier	1339117
person.identifier.ciencia-id	401E-2FEC-8303
person.identifier.orcid	0000-0002-2385-4282
person.identifier.rid	F-2269-2010
person.identifier.scopus-author-id	8585923500
rcaap.rights	openAccess	pt_PT
rcaap.type	conferenceObject	pt_PT
relation.isAuthorOfPublication	3d08baba-b032-42c4-8244-94672c4611a1
relation.isAuthorOfPublication.latestForDiscovery	3d08baba-b032-42c4-8244-94672c4611a1