Collapse Analysis for Shells of General Shape; Volume 1. Analysis

Abstract

F33615-69-C-1523, AF-1467146703, AFFDLTR-71-8-Vol-1(*shells(structural forms), failure(mechanics)), structural properties, numerical analysis, buckling, plastic properties, tensor analysis, computer programming newton- raphson method, collapse, plates(structural members), finite difference theory, stags computer program, structural analysis. The report presents a theory for nonlinear collapse analysis of shells with general shape. The theory combines energy principals and finite difference methods to obtain a system of nonlinear equations; these are solved by a modified Newton-Raphson technique. For greater economy and flexibility in the analysis a capability is provided for use of variable spacing finite difference grids. Inelastic material behavior, as predicted by the White-Besseling Theory, is incorporated into the analysis. A computer code, STAGS, based on the theory has been written and used to solve a number of sample problems. Results for these problems are presented.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1972
Accession Number
AD0751702

Entities

People

  • B. O. Almroth
  • F. A. Brogan
  • M. B. Marlowe

Organizations

  • Lockheed Martin Missiles and Space

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Air Force
  • Axial Loads
  • Birds
  • Collapse
  • Computer Programming
  • Computer Programs
  • Computers
  • Equations
  • Geometry
  • Materials
  • Mechanics
  • Numerical Analysis
  • Plastic Properties
  • Stress Strain Relations
  • Stresses
  • Two Dimensional
  • Yield Strength

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Structural Dynamics.

Technology Areas

  • Space