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Simulation of crack propagation using mixed mode intensity
Posted May 23, 2016, 3:00 p.m. EDT Fluid & Heat, Structural Mechanics Version 5.2 2 Replies
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Hi all,
I have read 2 following documents that related to crack propagation.
www.comsol.com/model/mixed-mode-debonding-of-a-laminated-composite-19961
www.comsol.com/model/single-edge-crack-988
The examples talk about the first mode of crack propagation and they based on symmetric plane. I am thinking that if we can implement a procedure by using mixed mode intensity (K1, K2) a crack propagate in an arbitrary direction. On this condition, do you think that it is possible to simulate a crack propagation in an arbitrary direction with COMSOL? If so, do you have any idea on how to implement the problem? In fact I want to solve a poroelasticity problem which I have a porous media and the pressure is supplying by fluid pumping. But I have some problem in my example and it does not show a proper result.
I have read 2 following documents that related to crack propagation.
www.comsol.com/model/mixed-mode-debonding-of-a-laminated-composite-19961
www.comsol.com/model/single-edge-crack-988
The examples talk about the first mode of crack propagation and they based on symmetric plane. I am thinking that if we can implement a procedure by using mixed mode intensity (K1, K2) a crack propagate in an arbitrary direction. On this condition, do you think that it is possible to simulate a crack propagation in an arbitrary direction with COMSOL? If so, do you have any idea on how to implement the problem? In fact I want to solve a poroelasticity problem which I have a porous media and the pressure is supplying by fluid pumping. But I have some problem in my example and it does not show a proper result.
2 Replies Last Post May 24, 2016, 12:34 p.m. EDT
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Posted:
9 years ago
Hi,
There is no easy way to do this with built-in features.
If you are going to model a crack path which is not known in advance, it will be rather difficult. You will need to take control over the whole process yourself, probably by using the Matlab API. That would mean generating new geometry and mesh, mapping results between solution steps etc.
Another idea could be to use level set or phase field appoaches in some way.
Regards,
Henrik
There is no easy way to do this with built-in features.
If you are going to model a crack path which is not known in advance, it will be rather difficult. You will need to take control over the whole process yourself, probably by using the Matlab API. That would mean generating new geometry and mesh, mapping results between solution steps etc.
Another idea could be to use level set or phase field appoaches in some way.
Regards,
Henrik
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Posted:
9 years ago
Thank you so much Henrik.