Trends and developments in timber engineering

1992 ◽  
Vol 6 (3) ◽  
pp. 131-132
Author(s):  
J. Marcroft
Keyword(s):  
2017 ◽  
Vol 7 (3) ◽  
pp. 10
Author(s):  
PAGE TOM ◽  
THORSTEINSSON GISLI ◽  
◽  

Holzforschung ◽  
2019 ◽  
Vol 73 (8) ◽  
pp. 715-725 ◽  
Author(s):  
Francesco Mirko Massaro ◽  
Kjell Arne Malo

AbstractThe effects of variation in humidity coupled with long-term loading give rise to dimensional changes and creep effects in wooden elements. Many wooden products such as cross-laminated timber (CLT) plates as well as many common structural details used in timber engineering are vulnerable to variations in moisture content (MC) as well as to creep effects. This paper addresses the long-term effects in the material modelling of timber by the finite element method (FEM), also considering the viscoelastic and mechanosorptive effects in wood. The model was calibrated using both relaxation tests and creep tests. The results from both long-term compression perpendicular- to-grain tests (relaxation and creep) performed on glulam (GL30c) from Norway spruce (Picea abies) with moisture control are presented in this paper. The material model considers the effect of loading and moisture changes. For realistic comparison, the pith location of each lamella was specified in the numerical analyses. Ultimately, a comparison between the numerical results and the experimental results has been provided, exhibiting an overall good estimation of timber response.


1989 ◽  
Vol 23 (4) ◽  
pp. 289-293
Author(s):  
R. O. Foschi
Keyword(s):  

2005 ◽  
Vol 40 (4) ◽  
pp. 275-290 ◽  
Author(s):  
Jean-Luc Coureau ◽  
Per Johan Gustafsson ◽  
Kent Persson

2016 ◽  
Vol 67 ◽  
pp. 121-127 ◽  
Author(s):  
Michael Adam ◽  
Andreas Lühring ◽  
Matthias Popp ◽  
Simon Fecht ◽  
Till Vallée

1987 ◽  
Vol 14 (5) ◽  
pp. 621-630 ◽  
Author(s):  
Erol Karacabeyli ◽  
Ricardo O. Foschi

Results from theoretical and experimental studies on the strength of glulam rivet connections under eccentric loading are presented. Two failure modes are studied: (1) rivet yielding in bending with simultaneous bearing failure of the wood under the rivet's shank and (2) wood failure around the rivet cluster. The latter is studied using brittle fracture theory and a finite element analysis of the stress distribution in the wood around the rivets.Experimental results are shown to compare well with theoretical predictions for failure loads and type of failure, and design guidelines are proposed. Key words: fasteners, wood connectors, glued-laminated, nails, timber engineering.


1985 ◽  
Vol 12 (4) ◽  
pp. 731-744 ◽  
Author(s):  
Andrew H. Buchanan ◽  
Kenneth C. Johns ◽  
Borg Madsen

Combined bending and axial loading is often encountered in lumber and timber members. Existing design methods are based on studies carried out many years ago, and are no longer appropriate because they do not recognize that wood with defects behaves in compression as a nonlinear ductile material and in tension as an elastic brittle material subject to size effects.This paper summarizes the findings of a comprehensive investigation into the behaviour of lumber subjected to eccentric axial loading, which was carried out at two Canadian universities. The study included analytical modelling and an extensive experimental program using full-size lumber.The results of the investigation have been used in this paper to propose improved design methods, using design charts and approximate formulae for in-plane behaviour. The discussion is extended to general loading cases and biaxial behaviour. Input information required for the design process is also discussed.


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