Influence of Structural and Aerodynamic Modeling on Flutter Analysis and Structural Optimization

Abstract

The influences of structural and aerodynamic modeling on the flutter analysis and multidisciplinary optimization of fully built-up finite element wing models in an aeroelastic environment are not yet well understood. Therefore, the dynamic aeroelastic and optimization capabilities in the Automated Structural Optimization System (ASTROS) were used to evaluate the flutter behavior and the behavior of structural optimization with flutter constraints of various representative fully built-up finite element wing models in subsonic and supersonic flow. ASTROS was here used as a tool to calculate flutter speeds and frequencies and to minimize the weight of these wing models in subsonic and supersonic flow under given flutter and frequency constraints to determine the effect that these modeling factors have. Structures, ASTROS, Aeroelasticity, Modelling, Optimization.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1991
Accession Number
ADA248487

Entities

People

  • Alfred G. Striz

Organizations

  • University of Oklahoma

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Aeroelasticity
  • Aerospace Industry
  • Aircrafts
  • Aspect Ratio
  • Composite Materials
  • Environment
  • Flow
  • Frequency
  • Governments
  • Mach Number
  • Materials
  • Resonant Frequency
  • Spars
  • Supersonic Flow
  • Transonic Flow
  • Wing Boxes

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Aerodynamics.
  • Computer Science.

Technology Areas

  • Hypersonics