Soyarslan, CelalBargmann, SwantjeHahner, Peter2023-01-112023-01-112017-08-24Çakan, B. G. vd. (2017). ''Experimental and computational study of ductile fracture in small punch tests''. Materials, 10(10).1996-1944https://doi.org/10.3390/ma10101185https://www.mdpi.com/1996-1944/10/10/1185http://hdl.handle.net/11452/30401A unified experimental-computational study on ductile fracture initiation and propagation during small punch testing is presented. Tests are carried out at room temperature with unnotched disks of different thicknesses where large-scale yielding prevails. In thinner specimens, the fracture occurs with severe necking under membrane tension, whereas for thicker ones a through thickness shearing mode prevails changing the crack orientation relative to the loading direction. Computational studies involve finite element simulations using a shear modified Gurson-Tvergaard-Needleman porous plasticity model with an integral-type nonlocal formulation. The predicted punch load-displacement curves and deformed profiles are in good agreement with the experimental results.eninfo:eu-repo/semantics/openAccessChemistryMaterials scienceMetallurgy & metallurgical engineeringPhysicsDuctile fractureGurson's plasticity modelNonlocal plasticityP91 steelSmall punch testScale yielding conditionsCrack-growthNonlocal damageVoid nucleationNeural-networksP91 weldmentDeformationToughnessFailureBone cementFinite element methodFractureFracture testingMaterials testingMetallic glassPlasticityDuctile fracture initiationFinite element simulationsLoad-displacement curveNon-local plasticityNonlocal formulationsDuctile fracturePlasticity modelShearArticle0004146390000802-s2.0-85031927259101029039748Chemistry, physicalMaterials science, multidisciplinaryMetallurgy & metallurgical engineeringPhysics, appliedPhysics, condensed matterPunches; Creep; Indentation