ASPECTS OF THE RESPONSE OF STRUCTURES SUBJECT TO SONIC FATIGUE

Abstract

The stress in aircraft structure resulting from multi-mode response to sonic excitation in resolved into an alternating stress component superimposed upon a slowly varying mean stress component. It is then found that the probability distribution of those components is nearly independent of the number of modes participating in the response. This finding could have considerable application in simplifying fatigue analysis and testing if it may be shown that the mean stress component has only low order effects upon fatigue life. Some of the possible applications are presented. A test program for establishing the significance of the mean stress component is outlined.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1961
Accession Number
AD0268260

Entities

People

  • Arnold E. Galef
  • Hassel C. Schjelderup

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Aircrafts
  • Data Analysis
  • Data Processing
  • Discrete Distribution
  • Engineering
  • Fatigue Life
  • Frequency
  • Frequency Bands
  • Human Factors Engineering
  • Materials
  • Probability Distributions
  • Production
  • Resonant Frequency
  • Simulations
  • Vibration

Fields of Study

  • Physics

Readers

  • Structural Health Monitoring of Composite Structures.
  • Theoretical Analysis.