Constitutive model for wood based on continuum damage mechanics

Carmen Sandhaas, Jan Willem Van De Kuilen, Hans Joachim Blass

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

20 Scopus citations

Abstract

Based on the theory of continuum damage mechanics (CDM), a 3D constitutive model was developed that allows for a holistic approach for timber models. With one single material model, simultaneous ductile and brittle behaviour of wood can be simulated and the failure modes can be identified. To validate the model, tension, compression and embedment tests were modelled applying the developed constitutive model. Not only softwoods were used, but also European and tropical hardwoods. The predictive quality of the constitutive model was assessed by comparing load-slip curves and failure modes of the test specimens with the numerical results. Good agreements were found and brittle behaviour with stable crack growth could be predicted. The developed material model proved to be a valid approach to improve the prediction quality of numerical models and to identify failure modes.

Original languageEnglish
Title of host publicationWorld Conference on Timber Engineering 2012, WCTE 2012
Subtitle of host publicationTimber Engineering Challenges and Solutions
Pages159-167
Number of pages9
StatePublished - 2012
EventWorld Conference on Timber Engineering 2012: Timber Engineering Challenges and Solutions, WCTE 2012 - Auckland, New Zealand
Duration: 15 Jul 201219 Jul 2012

Publication series

NameWorld Conference on Timber Engineering 2012, WCTE 2012
Volume1

Conference

ConferenceWorld Conference on Timber Engineering 2012: Timber Engineering Challenges and Solutions, WCTE 2012
Country/TerritoryNew Zealand
CityAuckland
Period15/07/1219/07/12

Keywords

  • 3D constitutive model wood
  • Continuum damage mechanics (CDM)
  • Finite element method

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