Vibration fatigue behavior of 2024-T62 aluminum alloy cantilever beam under different vibration state

Haitao Hu, Yulong Li, Jinli Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The vibration fatigue experiments of cantilever beam structures were performed to investigate the fatigue behavior of 2024-T62 aluminum alloy. Two types of cantilever beams with various natural frequencies under the sinusoidal excitation were investigated. The initial stress of two types of specimens were set in the same amplitude by adjusting the acceleration of electrodynamic shaker. Based on the stress history recorded by the strain gauge in fatigue test and the Miner's liner cumulative damage rule, the fatigue damage of the cantilever beam was calculated. The effect of vibration state on the vibration fatigue behavior of the cantilever beam was discussed. The experiment results show that the fatigue life of the cantilever beam, of which the initial vibration state is resonance, is longer than that of non-resonance. The calculated damage results were in accord with the reduction of the natural frequency measured in experiment. The reduction of natural frequency could be used to evaluate the fatigue damage of structures.

Original languageEnglish
Title of host publicationAdvances in Fracture and Damage Mechanics XI
PublisherTrans Tech Publications Ltd
Pages253-256
Number of pages4
ISBN (Print)9783037854631
DOIs
StatePublished - 2012
Event11th International Conference on Fracture and Damage Mechanics, FDM 2012 - Xian, China
Duration: 18 Sep 201221 Sep 2012

Publication series

NameKey Engineering Materials
Volume525-526
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference11th International Conference on Fracture and Damage Mechanics, FDM 2012
Country/TerritoryChina
CityXian
Period18/09/1221/09/12

Keywords

  • Damage
  • Fatigue
  • Natural frequency
  • Resonance
  • Vibration state

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