Force Method Optimization II. Volume I. Theoretical Development.

Abstract

The document investigates the utilization of the force method of finite element analysis for the automatic iterative design of aircraft structures with stress, displacements, maximum and minimum size and dynamic constraints. It develops a rapid reanalysis method based on the force method for damage assessment. Research has resulted in a computer code named OPTFORCE II an expansion of code OPTFORCE I. Multiple loading capabilities and four finite elements have been included. These are: membrane triangle, membrane quadrilateral, shear panel and bar (axial force). Examples of problems solved by the OPTFORCE II code are presented and compared to the optimization code OPTIM III for purposes of establishing the efficiency of the force method vs. the 'displacement' method of analysis. A technical discussion of the research conducted is presented wherein conclusions and recommendations for future research topics are given.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1982
Accession Number
ADA127073

Entities

People

  • James R. Batt
  • R. A. Gellatly
  • S. Gellin

Organizations

  • Bell Aircraft Corporation

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Aerodynamic Configurations
  • Air Force
  • Aircrafts
  • Airframes
  • Computer Programming
  • Damage Assessment
  • Dynamic Response
  • Finite Element Analysis
  • Linear Programming
  • Materials
  • Mechanics
  • New York
  • Spars
  • Standards
  • Structural Components
  • Two Dimensional
  • Wing Boxes

Fields of Study

  • Engineering

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Systems Analysis and Design