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Cohesive zone modeling(only mode1)

Posted Jan 10, 2023, 11:12 p.m. EST Modeling Tools & Definitions, Structural Mechanics Version 6.0 2 Replies

Lee Junghyun
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Hello,

I am modeling thin layer CZM (Cohesive zone modeling). I only know fracture distance and tensile strength in tension. There is no value in shear. So, I want to use only Mode1, not Mixed Mode. Does anyone have any suggestions/tips?

Thank you!

2 Replies Last Post Jan 25, 2023, 7:38 a.m. EST
Suganth V
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Posted: 2 years ago Jan 21, 2023, 1:44 p.m. EST

general steps: * * Create a 3D model of the structure in the COMSOL Model Builder, and define the geometry, material properties, and boundary conditions. * * Add the Solid Mechanics interface to the model to simulate the mechanical behavior of the structure. * * Add the Cohesive Zone Modeling interface to the model to simulate the fracture behavior of the thin layer. In this interface, you can define the fracture distance and tensile strength of the thin layer, and use these values to model the crack propagation. * * In the Cohesive Zone Modeling interface, you will have to set the "Mixed Mode" option to "Off", in order to use only Mode I. * * Apply a tensile loading condition to the structure, and solve the model. * * Post-process the results to analyze the crack propagation behavior of the thin layer.

general steps: * * Create a 3D model of the structure in the COMSOL Model Builder, and define the geometry, material properties, and boundary conditions. * * Add the Solid Mechanics interface to the model to simulate the mechanical behavior of the structure. * * Add the Cohesive Zone Modeling interface to the model to simulate the fracture behavior of the thin layer. In this interface, you can define the fracture distance and tensile strength of the thin layer, and use these values to model the crack propagation. * * In the Cohesive Zone Modeling interface, you will have to set the "Mixed Mode" option to "Off", in order to use only Mode I. * * Apply a tensile loading condition to the structure, and solve the model. * * Post-process the results to analyze the crack propagation behavior of the thin layer.
Lee Junghyun
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Posted: 2 years ago Jan 25, 2023, 7:38 a.m. EST

thank you so much for your answer

But there is a problem. How do I turn off Mixed Mode?

thank you so much for your answer But there is a problem. How do I turn off Mixed Mode?

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