PISA
Category Numerical analysis (general)
Publisher  University of Alberta 
Platform Win3x, Win95/98, WinNT
Status Commercial
Description PISA (Program for Incremental Stress Analysis) is a 2D finite element solid deformation modeling program based on the displacement finite element method. The main features of the program include: Graphic input using the mouse, combined with key entry for accurate specification of coordinates; Generation of finite element mesh using element blocks; Graphic output showing finite element mesh, deformation of soil structures, contour of stresses, strains and displacements, displacement vectors, stress vectors and x-y plots of various quantities such as stress paths, settlement profiles, deformation history; Execution of finite element code within the program and continuous display of progress of analysis and convergence characteristics for nonlinear problems; Step modeling with complete flexibility of adding and deleting elements; Three elastic models (linear elastic, cross isotropic elastic and non-linear hyperbolic); Six plasticity models (von-Mises, Tresca, associated and non-associated Drucker-Prager, and associated and non-associated Mohr-Coulomb); Two critical state models (Modified Cam Clay and Double Yield Surface); Material models can be changed from one time step to another time step; Effective stress analysis for drained and undrained materials with user defined phreatic lines; Time dependent creep deformation; Interactive help facilities providing explanation of program commands and operations.
Data formats supported None stated
Supplier in Canada  University of Alberta 

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