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14 PPR cohesive model implementation Explicit time integration scheme (Abaqus explicit) User element subroutine � Virtual work � Update displacement � Update acceleration � Update velocity Mesh generation � Meshing by Abaqus/CAE � Insert cohesive elements into the mesh
CZM for ductile materials �� Validate CZM for ductile material using coupon Test �� CZM using PPR PPR model (Park, 2009) 2009) for mixed mode fracture �� CZM elements are inserted in critical area �� Preliminary Preliminary CZM result shows good agreement with experiment CZM elements 15 (tests at UIUC) Force (KN) 60 50 40 30 20 10 0 Buck elements 1/4" Test Number 1 experiment analysis 0 10 20 30 40 50 60 Displacement (mm) Simulation vs. Experiment Exp
Page 1 and 2: A CZM-based Macro-model for Progres
Page 3 and 4: 3 Key elements of structural analys
Page 5 and 6: 5 Existing approaches for collapse
Page 7 and 8: 7 Existing approaches for collapse
Page 9 and 10: 9 Scope of research This research s
Page 11 and 12: 11 Cohesive law CZM schematics Intr
Page 13: 13 CZM: PPR cohesive model Based on
Page 17 and 18: N 17 A CZM-based macro-model 1 3 3
Page 19 and 20: Modified Multi-surface Kinematic Ha
Page 21: 21 Progressive collapse � Aim to

presentation - Northeastern University

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