Accession Number : AD0751702


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


Descriptive Note : Final rept. Apr 1969-Jan 1972


Corporate Author : LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CA PALO ALTO RESEARCH LAB


Personal Author(s) : Almroth, B O ; Brogan, F A ; Marlowe, M B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/751702.pdf


Report Date : Aug 1972


Pagination or Media Count : 91


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.


Descriptors :   *SHELLS(STRUCTURAL FORMS) , STRUCTURAL PROPERTIES , COMPUTER PROGRAMMING , PLASTIC PROPERTIES , TENSOR ANALYSIS , FAILURE(MECHANICS) , BUCKLING , NUMERICAL ANALYSIS


Subject Categories : Structural Engineering and Building Technology
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE