A method to model wood by using ABAQUS finite element software. Part 2. Application to dowel type connections

Florian Mirianon, Stefania Fortino, Tomi Toratti

Research output: Book/ReportReport

Abstract

This report presents numerical analyses of dowel connections modeled in ABAQUS using a rheological model for wood taking into account loading time, moisture content of wood and the load case. Some experimental tests under constant moisture content have been modeled as well and the numerical results are in good agreement with the experiments. Variable relative humidity conditions have been applied to some connections. The results show that the variations of moisture content in wood can strongly increase the stresses in wood, especially in the direction perpendicular to the grain. The same connection has been modeled with and without reinforcement based on glued-in rods. It appears that the presence of glued-in rods affects the stresses around the holes and most of the tension stresses are converted into compression stresses. A one dowel connection has been modeled to study the influence of the friction coefficient between wood and steel on the crack appearance. The results have showed that the higher the friction coefficient is, the smaller the strains perpendicular to grain are.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages68
ISBN (Electronic)978-951-38-7112-3
Publication statusPublished - 2008
MoE publication typeD4 Published development or research report or study

Publication series

SeriesVTT Publications
Number690
ISSN1235-0621

Fingerprint

ABAQUS
Wood
Moisture
Friction
Atmospheric humidity
Reinforcement
Cracks
Steel
Experiments

Keywords

  • timber
  • gluelam
  • moisture transfer
  • stress analysis
  • FEM
  • ABAQUS
  • creep
  • mechano-sorption
  • dowel
  • connections

Cite this

Mirianon, F., Fortino, S., & Toratti, T. (2008). A method to model wood by using ABAQUS finite element software. Part 2. Application to dowel type connections. Espoo: VTT Technical Research Centre of Finland. VTT Publications, No. 690
Mirianon, Florian ; Fortino, Stefania ; Toratti, Tomi. / A method to model wood by using ABAQUS finite element software. Part 2. Application to dowel type connections. Espoo : VTT Technical Research Centre of Finland, 2008. 68 p. (VTT Publications; No. 690).
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abstract = "This report presents numerical analyses of dowel connections modeled in ABAQUS using a rheological model for wood taking into account loading time, moisture content of wood and the load case. Some experimental tests under constant moisture content have been modeled as well and the numerical results are in good agreement with the experiments. Variable relative humidity conditions have been applied to some connections. The results show that the variations of moisture content in wood can strongly increase the stresses in wood, especially in the direction perpendicular to the grain. The same connection has been modeled with and without reinforcement based on glued-in rods. It appears that the presence of glued-in rods affects the stresses around the holes and most of the tension stresses are converted into compression stresses. A one dowel connection has been modeled to study the influence of the friction coefficient between wood and steel on the crack appearance. The results have showed that the higher the friction coefficient is, the smaller the strains perpendicular to grain are.",
keywords = "timber, gluelam, moisture transfer, stress analysis, FEM, ABAQUS, creep, mechano-sorption, dowel, connections",
author = "Florian Mirianon and Stefania Fortino and Tomi Toratti",
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language = "English",
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Mirianon, F, Fortino, S & Toratti, T 2008, A method to model wood by using ABAQUS finite element software. Part 2. Application to dowel type connections. VTT Publications, no. 690, VTT Technical Research Centre of Finland, Espoo.

A method to model wood by using ABAQUS finite element software. Part 2. Application to dowel type connections. / Mirianon, Florian; Fortino, Stefania; Toratti, Tomi.

Espoo : VTT Technical Research Centre of Finland, 2008. 68 p. (VTT Publications; No. 690).

Research output: Book/ReportReport

TY - BOOK

T1 - A method to model wood by using ABAQUS finite element software. Part 2. Application to dowel type connections

AU - Mirianon, Florian

AU - Fortino, Stefania

AU - Toratti, Tomi

PY - 2008

Y1 - 2008

N2 - This report presents numerical analyses of dowel connections modeled in ABAQUS using a rheological model for wood taking into account loading time, moisture content of wood and the load case. Some experimental tests under constant moisture content have been modeled as well and the numerical results are in good agreement with the experiments. Variable relative humidity conditions have been applied to some connections. The results show that the variations of moisture content in wood can strongly increase the stresses in wood, especially in the direction perpendicular to the grain. The same connection has been modeled with and without reinforcement based on glued-in rods. It appears that the presence of glued-in rods affects the stresses around the holes and most of the tension stresses are converted into compression stresses. A one dowel connection has been modeled to study the influence of the friction coefficient between wood and steel on the crack appearance. The results have showed that the higher the friction coefficient is, the smaller the strains perpendicular to grain are.

AB - This report presents numerical analyses of dowel connections modeled in ABAQUS using a rheological model for wood taking into account loading time, moisture content of wood and the load case. Some experimental tests under constant moisture content have been modeled as well and the numerical results are in good agreement with the experiments. Variable relative humidity conditions have been applied to some connections. The results show that the variations of moisture content in wood can strongly increase the stresses in wood, especially in the direction perpendicular to the grain. The same connection has been modeled with and without reinforcement based on glued-in rods. It appears that the presence of glued-in rods affects the stresses around the holes and most of the tension stresses are converted into compression stresses. A one dowel connection has been modeled to study the influence of the friction coefficient between wood and steel on the crack appearance. The results have showed that the higher the friction coefficient is, the smaller the strains perpendicular to grain are.

KW - timber

KW - gluelam

KW - moisture transfer

KW - stress analysis

KW - FEM

KW - ABAQUS

KW - creep

KW - mechano-sorption

KW - dowel

KW - connections

M3 - Report

T3 - VTT Publications

BT - A method to model wood by using ABAQUS finite element software. Part 2. Application to dowel type connections

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Mirianon F, Fortino S, Toratti T. A method to model wood by using ABAQUS finite element software. Part 2. Application to dowel type connections. Espoo: VTT Technical Research Centre of Finland, 2008. 68 p. (VTT Publications; No. 690).