Mechanics and Control of Nonlinear Structures.

Abstract

This report documents results of analytical, computational, and experimental research on nonlinear structural analysis. In particular, a novel inverse dynamics method is presented whereby exact solutions for nonlinear dynamical response can be determined near a given approximate numerical solution. This method is useful for validation and tuning of dynamic response simulations. Also, novel results are reported for parameterization of NxN proper orthogonal matrices and applications in mechanics and control are explored. A novel quasi-coordinate method is developed for nonlinear flexible multi-body structural systems having a configuration variable mass matrix. This approach avoids the necessity of inverting the mass matrix through the derivation of differential equations which generate an instantaneously diagonalizing transformation. Finally, experimental results of maneuvers of the ASTREX Test Article are presented.

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Document Details

Document Type
Technical Report
Publication Date
Nov 22, 1996
Accession Number
ADA320235

Entities

People

  • John L. Junkins

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Autonomous Systems
  • Closed Loop Systems
  • Computational Fluid Dynamics
  • Computational Science
  • Control Systems
  • Differential Equations
  • Engineers
  • Geometric Forms
  • Joints (Anatomy)
  • Mathematical Filters
  • Mechanics
  • Modulus Of Elasticity
  • Molecular Mechanics Methods
  • Plastic Explosives
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Control Systems Engineering.
  • Linear Algebra
  • Robotics and Automation.