TY - GEN
T1 - Constitutive model for wood based on continuum damage mechanics
AU - Sandhaas, Carmen
AU - Van De Kuilen, Jan Willem
AU - Blass, Hans Joachim
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
KW - 3D constitutive model wood
KW - Continuum damage mechanics (CDM)
KW - Finite element method
UR - http://www.scopus.com/inward/record.url?scp=84871990598&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84871990598
SN - 9781622763054
T3 - World Conference on Timber Engineering 2012, WCTE 2012
SP - 159
EP - 167
BT - World Conference on Timber Engineering 2012, WCTE 2012
T2 - World Conference on Timber Engineering 2012: Timber Engineering Challenges and Solutions, WCTE 2012
Y2 - 15 July 2012 through 19 July 2012
ER -