I am designing a triaxial campaing in order to calibrate a a CDP model (Barcelona model 1989 modified by Fenves and Lee 1998).
I need to clarify the role of this different parameters:
- wc and wt
- Kc
- fb0/fc0 (biaxial compression resistence over simple compression strenght resistence)
- dilatation angle ψ and the eccentricity ε of Drucker-Prager hyperbolic potential function
In particular is non that clare to me what is a biaxial compression resistence or a the tensile meridian and compressive meridian ultimate resistence.
I would be gratefull if anybody could help me.
Eugenio Doglione
Hello Eugenio.
You can find useful information about the parameters used in Abaqus for the CDP option in the following publications (you will find these papers online):
1. Tomasz JANKOWIAK, Tomasz LODYGOWSKI, "Identification of parameters of concrete damage plasticity constitutive model", Foundations of civil and environmental engineering, No.6, 2005
2. Richard Malm, "Predicting shear type crack initiation and growth in concrete with non-linear finite element method"
In these papers you will also find some examples to guide you to through proper values for these parameters.
Best regards.
Article Identification of parameters of concrete damage plasticity c...
I have already red the first but I am missing the second. Thank you!
I have already red the first but I am missing the second. Thank you!
You can download the second paper from the attached link.
http://www.diva-portal.org/smash/get/diva2:209582/fulltext01
I am sorry to disturb you again. I have been trough the paper 1 (Identification ... ), I am really missign the point, specially Table 1 page 60, the values of pi and qi disattend the formulas of previous page and also the values of s1, s2 and s3 do not match with Fig. 1 2 3 from where they are supposed to be taken. Maybe I am missing some theoretical background or some obvious consideration but I can no really hit the point. Can you help me?
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