RT info:eu-repo/semantics/article
T1 Damage modeling in Small Punch Test specimens
A1 Martínez Pañeda, Emilio
A1 Cuesta Segura, Isidoro Iván
A1 Peñuelas, I.
A1 Díaz Portugal, Andrés
A1 Alegre Calderón, Jesús Manuel
K1 Small Punch Test
K1 Fracture toughness
K1 Ductile damage
K1 Finite element method
K1 Resistencia de materiales
K1 Strength of materials
AB Ductile damage modeling within the Small Punch Test (SPT) is extensively investigated. The capabilities of the SPT to reliably estimate fracture and damage properties are thoroughly discussed and emphasis is placed on the use of notched specimens. First, different notch profiles are analyzed and constraint conditions quantified. The role of the notch shape is comprehensively examined from both triaxiality and notch fabrication perspectives. Afterwards, a methodology is presented to extract the micromechanical-based ductile damage parameters from the load-displacement curve of notched SPT samples. Furthermore, Gurson-Tvergaard-Needleman model predictions from a top-down approach are employed to gain insight into the mechanisms governing crack initiation and subsequent propagation in small punch experiments. An accurate assessment of micromechanical toughness parameters from the SPT is of tremendous relevance when little material is available.
PB Elsevier
SN 0167-8442
YR 2016
FD 2016-12
LK http://hdl.handle.net/10259/5663
UL http://hdl.handle.net/10259/5663
LA eng
NO Ministry of Economy and Competitiveness of Spain through grant MAT2014-58738-C3
DS Repositorio Institucional de la Universidad de Burgos
RD 24-nov-2024