Accession Number : AD0825573

Title :   ELASTIC-PLASTIC DISCRETE-ELEMENT ANALYSIS OF ASYMMETRICALLY-LOADED SHELLS OF REVOLUTION.

Descriptive Note : Technical rept.,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES RESEARCH LAB

Personal Author(s) : Fowler, John N.

Report Date : JUL 1967

Pagination or Media Count : 321

Abstract : A discrete-element matrix-displacement method is developed for the elastic-plastic small-deflection analysis of meridionally-curved shells of revolution subjected to asymmetric loading. Fourier series is used to describe the circumferential variations of loads, pressures, displacements, stresses, etc. The 'initial strain' approach in conjunction with the Mises-Hencky yield criterion and the plastic flow rule in accordance with the theory of plastic potential is used to determine the effects of plasticity. This method has been implemented as a digital computer program, and the computer solutions are compared to experimental results for two example shells. (Author)

Descriptors :   (*BODIES OF REVOLUTION, DEFORMATION), (*SHELLS(STRUCTURAL FORMS), LOADS(FORCES)), STRESSES, PLASTIC PROPERTIES, STRAIN(MECHANICS), FOURIER ANALYSIS, PRESSURE, DIGITAL COMPUTERS, COMPUTER PROGRAMS, EXPERIMENTAL DATA, INPUT OUTPUT DEVICES, NONLINEAR SYSTEMS, APPROXIMATION(MATHEMATICS), MATRICES(MATHEMATICS), FLAT PLATE MODELS, GUIDED MISSILES, SPACECRAFT, CREEP, ELASTIC PROPERTIES, AERODYNAMIC LOADING.

Subject Categories : Guided Missiles
      Mechanics
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE