Elastic-Plastic Analysis Using a Triangular Ring Element in NASTRAN

Abstract

An elastic-plastic triangular ring element is implemented in the NASTRAN computer program. The plane-strain problem of a partially-plastic thick- walled cylinder under internal pressure is solved and compared with the earlier finite-difference solution. A very good agreement has been reached. In order to demonstrate its application to more general problems, an overloaded thread problem for the British Standard Buttress is examined. The maximum axial and principal stresses are located and their values are determined as functions of loading.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1980
Accession Number
ADA094711

Entities

People

  • P. C. Chen

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Agreements
  • Axisymmetric
  • Computer Programs
  • Computers
  • Internal Pressure
  • Materials
  • Mechanical Properties
  • Mechanics
  • Military Research
  • Pressure Distribution
  • Screw Threads
  • Standards
  • Strain Hardening
  • Stress Concentration
  • Stress Strain Relations
  • Stresses
  • Test And Evaluation

Readers

  • Computer Science.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Mechanical Engineering/Mechanics of Materials.