New damage-plastic model for concrete
Current implementation of plastic damage model for concrete (CPDM) is based on the formulation proposed by Lee and Fenves including modifications of plastic flow potential introduced then by Omidi and Lot and important modifications proposed by Truty. This model couples single surface elasto-plasticity with hardening and an enhanced scalar damage allowing for description of stiffness degradation and stiffness recovery in cyclic tension-compression tests.
The implemented model can also describe a visco-elastic aging creep phenomenon following the EC2 standard (EN 1992-1-1:2004+AC:2008). Nonlinear creep efects that may appear for larger compressive stresses are neglected and no distinction is made between creep in compression and tension.
See “ELASTIC-PLASTIC DAMAGE MODEL FOR CONCRETE” report for mode details.
References
J. Lee and G. Fenves.
Plastic-damage model for cyclic loading of concrete structures.
Journal of Engineering Mechanics, 124:892-900, 1998.
J. Lee and G. Fenves.
A return-mapping algorithm for plastic-damage models: 3-D and plane stress formulation.
International Journal for Numerical Methods in Engineering, 50:487-506, 2001.
O. Omidi and V. Lot .
Continuum large cracking in a rate-dependent plastic-damagemodel for cyclic-loaded concrete structures.
International Journal for Numerical and Analytical Methods in Geomechanics, 37:1363-1390, 2012.
Virtual geotechnical laboratory toolbox
Virtual Lab is a highly-interactive module which provides users with:
- assistance in selecting a relevant constitutive law with regards to the general behavior of the real material
- fi rst-guess parameter estimation based on eld test records
- automated parameter selection ( first-guess values of model parameters for soil for any incomplete or complete specimen data)
- user-engaged parameter selection (interactive parameter selection which involves browsing dif ferent parameter correlations including fi eld tests data)
- ranges of parameter values which can be considered in parametric studies
- automated parameter identifi cation from laboratory experimental data
- possibility of running numerical simulations of elementary laboratory tests in order to visualize the constitutive model response for the de fined model parameters
- possibility of comparing numerical simulations of elementary laboratory tests with curves obtained in the laboratory
See “VIRTUAL LAB” report for mode details.
Diaphragm/sheet pile wall template on PC platform
Prepare your complex data in a matter of minutes and get automaticaly generated report (click here to see typical report) in pdf format.
New user interface in postprocessing
New user friendly interface based on ribbon technology is compatible with pre-processing. Easy access to the most commonly used options.
Export results to Paraview (*.vtu format)
“ParaView is an open-source, multi-platform data analysis and visualization application.” See http://www.paraview.org/ for details.
Option is available in post-processing under Export menu.
Python scripting (mainly postprocessing and automatic reporting)
Open world for those who have a little talent to programming. Tutorials prepared in form of simple scripts that everybody can reuse or modify according to his wishes.