TY - JOUR
T1 - Plastic, viscoplastic and creep fracture problems with the boundary element method
AU - Pineda-León, E.
AU - Rodríguez-Castellanos, A.
AU - Basaldúa-Sánchez, J. E.
AU - Flores-Méndez, E.
AU - Aliabadi, M. H.
N1 - Publisher Copyright:
© 2014 Wiley Publishing Ltd.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - The present paper shows the applicability of the dual boundary element method to analyse plastic, viscoplastic and creep behaviours in fracture mechanics problems. Several models with a crack, including a square plate, a holed plate and a notched plate, are analysed. Special attention is taken when the discretization of the domain is performed. In fact, for the plasticity and viscoplasticity cases, only the region susceptible to yielding was discretized, whereas the creep case required the discretization of the whole domain. The proposed formulation is presented as an alternative technique to study these kinds of nonlinear problems. Results from the present formulation are compared to those of the well-established finite element technique, and they are in good agreement. Important fracture mechanic parameters like KI, KII, J-integrals and C-integrals are also included. In general, the results, for the plastic, viscoplastic and creep cases, exhibit that the highest stress concentrations are in the vicinity of the crack tip and they decrease as the distance from the crack tip is increased.
AB - The present paper shows the applicability of the dual boundary element method to analyse plastic, viscoplastic and creep behaviours in fracture mechanics problems. Several models with a crack, including a square plate, a holed plate and a notched plate, are analysed. Special attention is taken when the discretization of the domain is performed. In fact, for the plasticity and viscoplasticity cases, only the region susceptible to yielding was discretized, whereas the creep case required the discretization of the whole domain. The proposed formulation is presented as an alternative technique to study these kinds of nonlinear problems. Results from the present formulation are compared to those of the well-established finite element technique, and they are in good agreement. Important fracture mechanic parameters like KI, KII, J-integrals and C-integrals are also included. In general, the results, for the plastic, viscoplastic and creep cases, exhibit that the highest stress concentrations are in the vicinity of the crack tip and they decrease as the distance from the crack tip is increased.
KW - Creep
KW - Dual boundary element method
KW - Fracture mechanics
KW - Plasticity
KW - Time dependent analysis
KW - Viscoplasticity
UR - http://www.scopus.com/inward/record.url?scp=84916942615&partnerID=8YFLogxK
U2 - 10.1111/ffe.12207
DO - 10.1111/ffe.12207
M3 - Artículo
SN - 8756-758X
VL - 38
SP - 40
EP - 55
JO - Fatigue and Fracture of Engineering Materials and Structures
JF - Fatigue and Fracture of Engineering Materials and Structures
IS - 1
ER -