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Finite element simulation of mechanical and moisture-related stresses in laterally loaded multi-dowel timber connections

Ormarsson, Sigurdur; Dahlblom, Ola LU and Nygaard, Michael Julsbo (2010) World Conference on Timber Engineering, 2010
Abstract
Numerical simulations of stress distribution within a moment stiff timber frame corner have been performed. The frame corner is a multi-dowel connection with two slotted-in steel plates. The interaction between the fasteners and the wood material is modelled as a full contact interaction based on penalty formulation. The wood material is assumed to be an orthotropic material in reference to elastic and shrinkage behaviours. Both mechanical loading (from snow and wind) and moisture loading have been studied. Model adaptivity was used to reduce the computer time and to find suitable coupling conditions between beam and solid elements. The simulation results have been compared with typical hand calculations. The conclusion is that the hand... (More)
Numerical simulations of stress distribution within a moment stiff timber frame corner have been performed. The frame corner is a multi-dowel connection with two slotted-in steel plates. The interaction between the fasteners and the wood material is modelled as a full contact interaction based on penalty formulation. The wood material is assumed to be an orthotropic material in reference to elastic and shrinkage behaviours. Both mechanical loading (from snow and wind) and moisture loading have been studied. Model adaptivity was used to reduce the computer time and to find suitable coupling conditions between beam and solid elements. The simulation results have been compared with typical hand calculations. The conclusion is that the hand calculations diverge quite a lot from the simulation results and relatively small moisture changes can cause significant stresses in areas adjoining the fasteners. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to conference
publication status
published
subject
keywords
wood, simulations, moisture, multi-dowels connection, slotted-in steel plates
conference name
World Conference on Timber Engineering, 2010
external identifiers
  • Scopus:84870436755
language
English
LU publication?
yes
id
c05d0bcd-9c99-42cb-ac01-535856c69d24 (old id 3217734)
date added to LUP
2012-12-04 17:18:05
date last changed
2016-10-13 05:01:59
@misc{c05d0bcd-9c99-42cb-ac01-535856c69d24,
  abstract     = {Numerical simulations of stress distribution within a moment stiff timber frame corner have been performed. The frame corner is a multi-dowel connection with two slotted-in steel plates. The interaction between the fasteners and the wood material is modelled as a full contact interaction based on penalty formulation. The wood material is assumed to be an orthotropic material in reference to elastic and shrinkage behaviours. Both mechanical loading (from snow and wind) and moisture loading have been studied. Model adaptivity was used to reduce the computer time and to find suitable coupling conditions between beam and solid elements. The simulation results have been compared with typical hand calculations. The conclusion is that the hand calculations diverge quite a lot from the simulation results and relatively small moisture changes can cause significant stresses in areas adjoining the fasteners.},
  author       = {Ormarsson, Sigurdur and Dahlblom, Ola and Nygaard, Michael Julsbo},
  keyword      = {wood,simulations,moisture,multi-dowels connection,slotted-in steel plates},
  language     = {eng},
  title        = {Finite element simulation of mechanical and moisture-related stresses in laterally loaded multi-dowel timber connections},
  year         = {2010},
}