A User's Manual for the REPSIL Code
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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REPSIL is a finite difference computer program which calculates the large deflection, transient motion of thin Kirchhoff shells. The program marches out the solution by cyclically solving an explicit, centered time difference formula for displacements. The formulation handles elastic-plastic behavior, including strain hardening and strain rate effects, and permits the modeling of a variety of initial shell configurations and impulsivepressure loadings. The manual gives instructions for correctly setting up problems and estimating machine time and storage requirements. Two illustrative problems are set up and the resulting solutions given. The numerical algorithm employed by REPSIL is outlined and instructions for programming additional initial geometries and loadings are given. The REPSIL plotting program, which produces isometric and cross-sectional displays and time histories of energies, deflections and strains, is also described. Listings of both the REPSIL program and the REPSIL plotting program are included.
- Computer Programming and Software