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Modelling of Finger-Joint Failure in Glued : Laminated Timber Beams

Serrano, Erik LU orcid ; Gustafsson, Per-Johan LU and Larsen, Hans Jörgen LU (2000) In TVSM-3000
Abstract
This paper presents a novel approach to the modelling of failure
of finger-joints in glued-laminated beams. A nonlinear strain-softening model
with stochastic material parameters was used to characterise the failure zone
of the finger-joint. Monte Carlo simulations of the behaviour of finger-jointed
laminations and of laminated beams were performed using the finite element
method. Various lamination thicknesses and beam depths were investigated,
as well as the effect of varying the ductility of the finger-joint. Finally the use
of simplified finger-joint material models was also investigated. The results
show that the proposed approach can account for such phenomena as the size
effect and the laminating... (More)
This paper presents a novel approach to the modelling of failure
of finger-joints in glued-laminated beams. A nonlinear strain-softening model
with stochastic material parameters was used to characterise the failure zone
of the finger-joint. Monte Carlo simulations of the behaviour of finger-jointed
laminations and of laminated beams were performed using the finite element
method. Various lamination thicknesses and beam depths were investigated,
as well as the effect of varying the ductility of the finger-joint. Finally the use
of simplified finger-joint material models was also investigated. The results
show that the proposed approach can account for such phenomena as the size
effect and the laminating effect. Another observation is that the finger-joint
ductility has a major influence on the lamination and beam strength and that
a special case of the present modelling approach can be made to coincide with
the classic weakest link theory of Weibull. (Less)
Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Book/Report
publication status
published
subject
keywords
Laminated wood, Glued-laminated timber,, Finger-joint,, Laminating effect, Size effect, Tensile strength, Bending strength,, Finite Element Analysis
in
TVSM-3000
issue
TVSM-3040
pages
23 pages
publisher
Division of Structural Mechanics, LTH
ISSN
0281-6679
language
Swedish
LU publication?
yes
id
c2db0397-999f-41dc-a6eb-2a15487d0923
date added to LUP
2023-10-07 15:31:04
date last changed
2023-10-20 13:24:58
@techreport{c2db0397-999f-41dc-a6eb-2a15487d0923,
  abstract     = {{This paper presents a novel approach to the modelling of failure<br/>of finger-joints in glued-laminated beams. A nonlinear strain-softening model<br/>with stochastic material parameters was used to characterise the failure zone<br/>of the finger-joint. Monte Carlo simulations of the behaviour of finger-jointed<br/>laminations and of laminated beams were performed using the finite element<br/>method. Various lamination thicknesses and beam depths were investigated,<br/>as well as the effect of varying the ductility of the finger-joint. Finally the use<br/>of simplified finger-joint material models was also investigated. The results<br/>show that the proposed approach can account for such phenomena as the size<br/>effect and the laminating effect. Another observation is that the finger-joint<br/>ductility has a major influence on the lamination and beam strength and that<br/>a special case of the present modelling approach can be made to coincide with<br/>the classic weakest link theory of Weibull.}},
  author       = {{Serrano, Erik and Gustafsson, Per-Johan and Larsen, Hans Jörgen}},
  institution  = {{Division of Structural Mechanics, LTH}},
  issn         = {{0281-6679}},
  keywords     = {{Laminated wood; Glued-laminated timber,; Finger-joint,; Laminating effect; Size effect; Tensile strength; Bending strength,; Finite Element Analysis}},
  language     = {{swe}},
  number       = {{TVSM-3040}},
  series       = {{TVSM-3000}},
  title        = {{Modelling of Finger-Joint Failure in Glued : Laminated Timber Beams}},
  url          = {{https://lup.lub.lu.se/search/files/160548067/web3040.pdf}},
  year         = {{2000}},
}