The OpenSees Community

All the examples in the Washington.edu site have been moved to:

http://opensees.berkeley.edu/wiki/index.php/Examples

The Manzari Dafalias model implemented in OpenSees requires the definition of several integration parameters. These parameters have to do with the numerical implementation, not with the model response. Although these parameters provide increase capabilities and flexibility, they can not be chosen ar...

To generate appropriate initial stresses (including Ko type conditions) you must first run the analysis forcing a drained condition. Moreover, since gravity is applied everywhere it is common to assume during this stage the material behaves elastic.

At this moment the Manzari-Dafalias models is under development and therefore not operational.
We plan to complete its implementation in the next couple of months.