A User's Manual for the REPSIL Code

Abstract

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 impulsive/pressure 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.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1974
Accession Number
ADA003176

Entities

People

  • H. L. Wisniewski
  • J. M. Santiago
  • N. J. Huffington Jr.

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Cartesian Coordinates
  • Computer Programming
  • Computer Programs
  • Computers
  • Difference Equations
  • Differential Equations
  • Equations Of Motion
  • Geometry
  • Hardening
  • Materials
  • Pressure Distribution
  • Strain Gages
  • Strain Hardening
  • Strain Rate
  • Stress Strain Relations
  • Three Dimensional
  • Two Dimensional

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Instructional Design and Training Evaluation.
  • Structural Dynamics.