Accession Number : AD0721317

Title :   Elastic-Plastic Analysis of Axisymmetric Solids Using Isoparametric Finite Elements.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA UNIV BERKELEY DIV OF STRUCTURAL ENGINEERING AND STRUCTURAL MECHANICS

Personal Author(s) : Larsen,P. K. ; Popov,E. P.

Report Date : JAN 1971

Pagination or Media Count : 53

Abstract : Application of special isoparametric finite elements is presented for elastic-plastic analysis of shells of revolution. General isoparametric elements are selected which in the form of a layered system are capable of representing a solid of revolution. The customary Kirchhoff-Love hypothesis is not invoked and the solutions therefore apply both to thin and thick shells of revolution. Sharp discontinuities in geometry, circumferential ribs and/or grooves, as well as cellular walls, may be studied. A special feature is the development of an element permitting sliding at the element interfaces with or without friction. The illustrative examples include a pressure vessel with a circumferential crack in the wall thickness, a circular plate consisting of two discs which can slide along their interface, and shrink-fit of two thick-walled circular cylinders. The solutions are limited to axially symmetric problems. Flow theory of plasticity is used in the inelastic range.

Descriptors :   (*SHELLS(STRUCTURAL FORMS), MATHEMATICAL MODELS), BODIES OF REVOLUTION, ELASTIC PROPERTIES, PLASTIC PROPERTIES, FRICTION, STRESSES, COMPUTER PROGRAMMING

Subject Categories : Structural Engineering and Building Technology
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE