Consistent Stresses for the Finite Element Stiffness Method.

Abstract

Conjugate basis functions which are continuous throughout a model are used to approximate a stress field. This conjugate approximation has less mean error than approximations calculated using conventional finite element methods and is a better approximation at extreme values of stress. This thesis consists of two major parts. The appropriate analytic expressions for conjugate stress fields are set forth and applied to the constant strain triangle finite element. Analyses are then performed with these new stress calculations and the results compared to some previous stress calculations. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1972
Accession Number
AD0758675

Entities

People

  • William Henry Conley Jr

Organizations

  • Naval Postgraduate School

Tags

DTIC Thesaurus Topics

  • Finite Element Analysis
  • Flexural Properties
  • Geometry
  • Mathematical Analysis
  • Mathematics
  • Mechanical Properties
  • Stiffness
  • Triangles

Readers

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