Large-Amplitude Plate Vibration in an Elevated Thermal Environment

Abstract

At elevated temperatures the dynamics of vibrating plate (or shell) must include the three thermal effects: (1) the global expansion that is due to uniform plate temperature, (2) the local expansion by temperature variation over the plate, and (3) the thermal moment induced by temperature gradient across the plate thickness. Using the single-mode model of Galerkin representation, we have shown that (1) and (2) give rise to the combined stiffness responsible for thermal buckling, whereas (3) contributes to the combined forcing of thermal and mechanical excitations. Anticipating the high-temperature sonic fatigue test facility being fabricated at the structural dynamics Branch (WL/FIBG) in support of NASP program, the present study attempts to estimate the mean square displacement and root-mean-square stress and strain components by using the equivalent linearization technique of stochastic dynamics.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1992
Accession Number
ADA254411

Entities

People

  • Jon Lee

Organizations

  • Wright Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Aspect Ratio
  • Bending Stress
  • Computational Science
  • Differential Equations
  • Dynamic Response
  • Energy Transfer
  • Fatigue Tests (Mechanics)
  • Frequency
  • Gaussian Processes
  • High Temperature
  • Mechanics
  • Partial Differential Equations
  • Standards
  • Temperature Gradients
  • Test And Evaluation
  • Test Facilities
  • Vibration

Readers

  • Computational Modeling and Simulation
  • Structural Dynamics.
  • Thermal Physics or Thermal Science.