Application of GRASP (General Rotorcraft Aeromechanical Stability Program) to Nonlinear Analysis of a Cantilever Beam,

Abstract

The General Rotorcraft Aeromechanical Stability Program (GRASP) was developed to analyse the steady-state and linearized dynamic behavior of rotorcraft in hovering and axial flight conditions. Because of the nature of problems GRASP was created to solve, the geometrically nonlinear behavior of beams is one area in which the program must perform well in order to be of any value. Numerical results obtained from GRASP are compared to both static and dynamic experimental data obtained for a cantilever beam undergoing large displacements and rotations caused by deformation. The correlation is excellent in all cases.

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Document Details

Document Type
Technical Report
Publication Date
Apr 10, 1987
Accession Number
ADA178786

Entities

People

  • Dewey H. Hodges
  • Howard E. Hinnant

Organizations

  • Ames Research Center

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • California
  • Cantilever Beams
  • Equations
  • Experimental Data
  • Frequency
  • Geometry
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • New York
  • Nonlinear Analysis
  • Polynomials
  • Resonant Frequency
  • Rotary Wing Aircraft
  • Standards
  • Steady State
  • Stiffness

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Educational Psychology
  • Structural Dynamics.