Hello Everyone,
I am trying to validate my masonry model in abaqus using the paper " Choudhury, T., Milani, G., & Kaushik, H. B. (2015). Comprehensive numerical approaches for the design and safety assessment of masonry buildings retrofitted with steel bands in developing countries: The case of India. Construction and Building Materials, 85, 227-246.". For CDP model to give inelastic & cracking strain they have given graphs. I am unable to get the value from graph. if the value are directly given in the abaqus it is giving either wrong results or error. I attaching the images of both graph & obtained value. please help me with this.
Thank you for the Help.
I suggest using the equations which are related to the stress, strain, and damage by an authentic paper or Abaqus help.
To be able to draw the stress-strain curve for uni-axial compression or tension and obtain the corresponding values (inelastic strain, cracking displacement and damage variables), you need to use some relations which can be found in the literature. Alfarah et al. (2017) developed a method to determine the damage variables of the CPDM model without the need for an experimental calibration. The stress-stress relation can be divided into 3 phases. The first part of the graph for compression and tension is linearly elastic where the stress = Young's modulus*strain. The second ascending part after 40% of the compressive of the strength of concrete for compression (This value can defer depending on which relation you are using) and the third descending part can be defined using different equations which can be found in Alfarah et al. (2017) or any other resources.
What error is showing up?
From the image in the table I can see that the damage parameter in the compression of the first line is not consistent. You should start with zero after the yield point.
And I agree with Seyed Reza Jafari , see Abaqus help about Damage evolution.
- Badges
- Science topic