I would like to consider corrosion in a column in my numerical simulation in ABAQUS? Can I just decrease the stiffness to simulate the corrosion? or any change in mechanical properties?
Is there any reference or paper or guideline about numerical simulation of corrosion specially in the steel or RC columns?
I guess how exactly one should describe the medium or material depends on what results are to be obtained. I apologize, but from the question I did not understand what kind of simulation should be performed: it is obvious that the specified medium may be described in various ways, in electrodynamic or mechanical simulation.
Hi Hadi,
Thanks for your interesting question.
What type of corrosion are you dealing with? (stress corrosion cracking, pitting corrosion, etc).
A practical approach is to use the concept of continuum damage mechanics.
It is not just the stiffnesses of materials that are affected by the process of corrosion. You need to adjust the yield strength as well. Even the Posson's ratio is affected by corrosion.
It is also noted that the process of corrosion is time-dependent and could be very non-linear, and you may need to consider a time-dependent model for this purpose. I would recommend you to see the works by Prof. Rob Melchers and his team at UON in Australia.
Overall, corrosion is a complex Bio-Chemo-Physical coupled process and it is not simple to model the process of corrosion precisely.
Please also check the concepts of degradation damage models explained in related literature, such as:
L. Kachanov, Introduction to continuum damage mechanics
https://www.springer.com/gp/book/9789024733194
Cui et al, 2020, An improved continuum damage mechanics model for evaluating corrosion–fatigue life of high-strength steel wires in the real service environment
https://www.sciencedirect.com/science/article/pii/S0142112320300712?casa_token=FVh6Mii8bx0AAAAA:P5BanEMZCMFyIaSYHFqjfilXqRcFFdseHitRQ9kuGNZdy3AKj60G6oo7sK-PePnSJAZFcpF9zTsj
I hope you find these useful.
Best regards,
E. F Salmi
Dear Hadi,
FEM using 2D or 3D stochastic model could be numerical simulation studying the effect of corrosion on stress concentration.
Refer site: Article Numerical Simulation of Material Strength Deterioration due ...
This might be useful for you. Just check this article.
Ashish
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