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Simulation of composite laminates

Posted 21 juin 2013, 09:57 UTC−4 Materials, Mesh, Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers, Structural Mechanics Version 4.3, Version 4.3a, Version 4.3b, Version 5.2a 1 Reply

Tesfaye Tadesse Molla
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Hi all,

Do you have any idea of modeling (simulation) of laminates , e.g. bi-layer composites having layers with different elastic modulus avoiding the so called 'free edge effect' (a stress singularity at the free edge).

i am using Comsol 4.3b and having this problem while i try to work with modeling creep in bi-layers

thanks for your time
-Tesfaye
1 Reply Last Post 31 mars 2017, 03:18 UTC−4
COMSOL Moderator

Hello Tesfaye Tadesse Molla

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Tobias Krüger
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Posted: 7 years ago 31 mars 2017, 03:18 UTC−4
Hello Tesfaye,

Could you find a proper way of getting around the singularity? I'm dealing with the same problem. I'd like to set up a model to investigate in the thermomechanical behaviour of CMC's, but none of my approaches led to convergence of the interlaminar stresses.

I was thinking about smoothening the properties with a step-function within a "thin elastic layer", but I think I'm missing information within this approach since we're dealing with anisotropic materials.

Any help would be highly appreciated.
Thank you,

Tobias Krüger

Hello Tesfaye, Could you find a proper way of getting around the singularity? I'm dealing with the same problem. I'd like to set up a model to investigate in the thermomechanical behaviour of CMC's, but none of my approaches led to convergence of the interlaminar stresses. I was thinking about smoothening the properties with a step-function within a "thin elastic layer", but I think I'm missing information within this approach since we're dealing with anisotropic materials. Any help would be highly appreciated. Thank you, Tobias Krüger

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