Dynamic Response of a Curved Plate Subjected to a Moving Local Heat Gradient

David A. Ehrhardt, B. T. Gockel, T. J. Beberniss

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Structures moving faster than the speed of sound will experience localized pressure and temperature gradients due to shockwave impingement. During in-flight maneuvers, these gradients will move across the surface of the structure, causing quasi-static thermal and mechanical strains. Loading conditions in these combined environments includes complicated aero-thermal-mechanical coupling, which is difficult to replicate in laboratory conditions. This work focuses on thermo-mechanical loading of a 12 inch × 18 inch curved stainless-steel plate when subjected to a moving thermal gradient at a peak temperature of 200 °F and distributed white noise mechanical loading at 9 g’s from 100 to 800 Hz. The dynamic response of this plate is measured with high-speed 3D digital image correlation, and the temperature distribution is measured with a high-speed FLIR camera.

Original languageEnglish (US)
Title of host publicationNonlinear Structures and Systems, Volume 1 - Proceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics 2019
EditorsGaetan Kerschen, M.R.W. Brake, Ludovic Renson
PublisherSpringer
Pages205-208
Number of pages4
ISBN (Print)9783030123901
DOIs
StatePublished - 2020
Externally publishedYes
Event37th IMAC, A Conference and Exposition on Structural Dynamics, 2019 - Orlando, United States
Duration: Jan 28 2019Jan 31 2019

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference37th IMAC, A Conference and Exposition on Structural Dynamics, 2019
Country/TerritoryUnited States
CityOrlando
Period1/28/191/31/19

Keywords

  • Combined loading
  • Digital image correlation
  • IR camera
  • Nonlinear dynamics

ASJC Scopus subject areas

  • General Engineering
  • Computational Mechanics
  • Mechanical Engineering

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