THE DYNAMICS OF SLENDER BEAMS. HELICOPTER ROTOR STUDY I,

Abstract

The purpose of the study is to formulate a non-linear exact theory for large amplitude flap-wise vibration of helicopter rotors. Previous linear beam theories, employing the assumption of small displacement, are limited in their treatment of the rotor problem. Some nonlinear theories have been developed. But these investigations, in one way or another, suffer from questionable assumptions and the true nature of the dynamics of a slender beam is not clearly understood. Beam equations for large amplitude vibration are formulated to include axial forces, shear deformation and rotatory inertia effects. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1970
Accession Number
AD0702934

Entities

People

  • Shiang-yu Lee

Organizations

  • University of Iowa

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Amplitude
  • Differential Equations
  • Displacement
  • Dynamics
  • Equations
  • Helicopter Rotors
  • Helicopters
  • Mathematics
  • Rotary Wing Aircraft
  • Vehicles
  • Vibration

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Structural Dynamics.
  • Systems Analysis and Design