PETROS 3.5: New Developments and Program Manual for the Finite-Difference Calculation of Large Elastic-Plastic Transient Deformations of Multilayer Variable-Thickness Shells.
MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES RESEARCH LAB
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The governing equations for the arbitrarily-large-deformation elastic-plastic transient responses of variable-thickness, hard-bonded, multilayer, multi-material, thin, Kirchhoff shells of any initial shape are presented and solved by the finite-difference technique tow types of spatial finite-difference grids are available. The material is assumed to be initially isotropic and to exhibit elastic, strain-hardening, strain-rate-sensitive, and temperature-dependent behavior. The structure may be subjected to a variety of initial velocity distributions, transient mechanical loads, andor transient thermal loads. These capabilities and features are contained in a computer program PETROS 3.5 which has been applied to a variety of example problems this computer code provides improvements over previous PETROS codes with respect to the spatial finite-difference grid, improved and additional boundary conditions, improved pole treatment, and more user-oriented options.
- Computer Programming and Software