IMPROVED COHESIVE ZONE MODEL AND ITS APPLICATION IN INTERFACE CONTACT ANALYSIS
来源期刊：Acta Metallurgica Sinica2008年第4期
论文作者：H.B.Li J.Chen Y.Wang
Key words：Cohesive zone model; Mixed mode; Damage criterion; Contact stress;
Abstract: An improved interface cohesive zone model is developed for the simulation of inter-face contact,under mixed-mode loading.A new debonding initiation criterion and propagation of debonding law,taking into account the pressure stress influence on contact shear strength,is proposed.The model is implemented in a finite-element program using subroutine VUINTER of ABA QUS Explicit.An edge-notch four-point bending process and laminated vibration damping steel sheet punch forming test are simulated with the improved model in ABAQUS Explicit.The numerical predictions agree satisfactorily with the corresponding experimental results.
H.B.Li1，J.Chen1，Y.Wang1
(1.National Die & Mold CAD Engineering Research Center,Shanghai Jiaotong University,Shanghai 200030,China)
Abstract:An improved interface cohesive zone model is developed for the simulation of inter-face contact,under mixed-mode loading.A new debonding initiation criterion and propagation of debonding law,taking into account the pressure stress influence on contact shear strength,is proposed.The model is implemented in a finite-element program using subroutine VUINTER of ABA QUS Explicit.An edge-notch four-point bending process and laminated vibration damping steel sheet punch forming test are simulated with the improved model in ABAQUS Explicit.The numerical predictions agree satisfactorily with the corresponding experimental results.
Key words:Cohesive zone model; Mixed mode; Damage criterion; Contact stress;
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