An enriched cohesive zone model for numerical simulation of interfacial delamination in microsystems

2007 ◽  
Author(s):  
M. Samimi ◽  
B.A.E. van Hal ◽  
R.H.J. Peerlings ◽  
J.A.W. van Dommelen ◽  
M.G.D. Geers
Keyword(s):  
Numerical Simulation ◽  
Cohesive Zone ◽  
Cohesive Zone Model ◽  
Zone Model ◽  
Interfacial Delamination

Numerical Simulation of Crack Growth in Polyethylene Composites by Means of the Cohesive Zone Model

2012 ◽  
Vol 311 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Marian Janko ◽  
Werner Ecker ◽  
Gerald Pinter ◽  
Otmar Kolednik
Keyword(s):  
Numerical Simulation ◽  
Crack Growth ◽  
Cohesive Zone ◽  
Cohesive Zone Model ◽  
Zone Model ◽  
Polyethylene Composites

A cohesive zone model for predicting the initiation of Mode II delamination in composites under cyclic loading

2020 ◽  
pp. 073168442094966
Author(s):  
Roham Rafiee ◽  
Sina Sotoudeh
Keyword(s):  
Numerical Simulation ◽  
Cyclic Loading ◽  
Cohesive Zone ◽  
Cohesive Zone Model ◽  
Cohesive Zone Modeling ◽  
Zone Model ◽  
Cohesive Elements ◽  
Damage Criterion ◽  
Damage Initiation ◽  
Number Of Cycles

A new approach for simulating delamination initiation under cyclic loading is proposed. This approach is based on the hysteresis cohesive zone modeling and the gradual degradation of interface properties. The initiation of delamination is predicted based on the monotonic traction–separation law of the interface. A damage criterion is proposed that depends on the bilinear traction–separation law and interlaminar stiffness is degraded by defining a damage parameter as a function of number of cycles and bilinear traction–separation law parameters. Numerical simulation is accomplished by implementing 2D finite element modeling for the case of double-notched specimen. Four-node zero-thickness interfacial cohesive elements are defined to capture the delamination behavior of midplane in the specimen. The results of numerical simulation are compared with available experimental data and a good agreement is observed. The main novelty of this research lies on assuming a cycle-by-cycle irreversible decrease in interlaminar stiffness prior to damage initiation and applying a damage criterion based on the bilinear traction–separation law in order to predict the number of cycles for initiation of delamination.

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