TY - GEN
T1 - Determination of mixed-mode cohesive zone failure parameters using digital volume correlation and the inverse finite element method
AU - Li-Mayer, J. Y.S.
AU - Martinez, M.
AU - Lambros, J.
AU - Charalambides, M. N.
N1 - Publisher Copyright:
© 2018 Trans Tech Publications, Switzerland.
PY - 2018
Y1 - 2018
N2 - The suitability of an optimisation workflow for the determination of the mixed-mode cohesive zone model parameters using digital volume correlation (DVC) data and the inverse finite element method was examined. A virtual compression experiment of a cylinder with a spherical inclusion was modelled using the finite element method. A bilinear traction separation law with a linear mixed-mode relationship was used to describe the interfacial behaviour. Known mode I and mode II fracture energies, = 20 J/m2 and = 40 J/m2 and damage initiation stress, = = 0.09 MPa, were used to generate a target composite debonding behaviour. An objective function, , determined based on the debonding behaviour measurable by DVC was chosen. A full factorial experiment was carried out for the four cohesive parameters and showed that correlation between fracture energies/ damage initiation stresses and is non-linear and discontinuous with multiple local minima. Optimisations initiated at the local minima identified from the full factorial experiment correctly determined the target cohesive fracture energies and damage initiation stresses.
AB - The suitability of an optimisation workflow for the determination of the mixed-mode cohesive zone model parameters using digital volume correlation (DVC) data and the inverse finite element method was examined. A virtual compression experiment of a cylinder with a spherical inclusion was modelled using the finite element method. A bilinear traction separation law with a linear mixed-mode relationship was used to describe the interfacial behaviour. Known mode I and mode II fracture energies, = 20 J/m2 and = 40 J/m2 and damage initiation stress, = = 0.09 MPa, were used to generate a target composite debonding behaviour. An objective function, , determined based on the debonding behaviour measurable by DVC was chosen. A full factorial experiment was carried out for the four cohesive parameters and showed that correlation between fracture energies/ damage initiation stresses and is non-linear and discontinuous with multiple local minima. Optimisations initiated at the local minima identified from the full factorial experiment correctly determined the target cohesive fracture energies and damage initiation stresses.
KW - Cohesive zone model
KW - Composite
KW - Mixed-mode
KW - Optimisation
UR - http://www.scopus.com/inward/record.url?scp=85053055234&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85053055234&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.774.72
DO - 10.4028/www.scientific.net/KEM.774.72
M3 - Conference contribution
AN - SCOPUS:85053055234
SN - 9783035713503
T3 - Key Engineering Materials
SP - 72
EP - 76
BT - Advances in Fracture and Damage Mechanics XVII
A2 - Rodriguez-Tembleque, Luis
A2 - Dominguez, Jaime
A2 - Aliabadi, Ferri M.H.
PB - Trans Tech Publications Ltd
T2 - 17th International Conference on Fracture and Damage Mechanics, FDM 2018
Y2 - 4 September 2018 through 6 September 2018
ER -