Search Results - "Pack, Keunhwan"

New ductile fracture criterion for prediction of fracture forming limit diagrams of sheet metals by Lou, Yanshan, Huh, Hoon, Lim, Sungjun, Pack, Keunhwan

“…A ductile fracture criterion is newly proposed to model fracture behavior of sheet metals for nucleation, growth and shear coalescence of voids during plastic…”
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Combined necking & fracture model to predict ductile failure with shell finite elements by Pack, Keunhwan, Mohr, Dirk

“…•Developed model to predict ductile failure of sheet metal with shell elements.•New DSSE model accounts for necking retardation due to bending.•It accounts for…”
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Hosford-Coulomb ductile failure model for shell elements: Experimental identification and validation for DP980 steel and aluminum 6016-T4 by Pack, Keunhwan, Tancogne-Dejean, Thomas, Gorji, Maysam B., Mohr, Dirk

“…When using shell elements, the Domain of Shell-to-Solid Equivalence (DSSE) needs to be defined in addition to the Hosford-Coulomb (HC) fracture initiation…”
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Numerical failure analysis of three-point bending on martensitic hat assembly using advanced plasticity and fracture models for complex loading by Pack, Keunhwan, Marcadet, Stephane J.

“…A variety of phenomenological models have been developed and validated at a specimen level to simulate plasticity and fracture of metallic materials using…”
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Sandia Fracture Challenge: blind prediction and full calibration to enhance fracture predictability by Pack, Keunhwan, Luo, Meng, Wierzbicki, Tomasz

“…The Impact and Crashworthiness Lab at Massachusetts Institute of Technology participated in the Sandia Fracture Challenge and predicted the crack initiation…”
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Characterization of the cyclic loading in the tube expansion process by Zhu, Juner, Wierzbicki, Tomasz, Pack, Keunhwan, Roggeband, Serge

“…•Analytical model of tube expansion is developed, covering friction, stretching, and bending.•Loading history of tube material shows clear stress reversals…”
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The second Sandia Fracture Challenge: blind prediction of dynamic shear localization and full fracture characterization by Pack, Keunhwan, Roth, Christian C.

“…In the context of the second Sandia Fracture Challenge, dynamic tensile experiments performed on a Ti–6Al–4V alloy with a complex fracture specimen geometry…”
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The third Sandia Fracture Challenge: deterministic and probabilistic modeling of ductile fracture of additively-manufactured material by Tancogne-Dejean, Thomas, Gorji, Maysam B., Pack, Keunhwan, Roth, Christian C.

“…Within the scope of the third Sandia Fracture Challenge the plasticity and ductile fracture behavior of an additively manufactured 316L stainless steel tensile…”
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