Vibration Fatigue Analysis of the Structure under Thermal Loading

Author:

Zheng Min1,Shen Fan1,Luo Pei1

Affiliation:

1. Nanjing University of Aeronautics and Astronautics

Abstract

The fatigue problem of structures under concurrent thermal and vibration loading has not been thoroughly studied even though it is common in applications of aero-engine combustor liners. Here we attempt to explore such a problem using a simplified combustor liner model that is implemented by the commercial finite element software ANSYS Workbench. The modal parameters at various temperatures are calculated and the fatigue behavior under stochastic base excitation and thermal environment are analyzed. The results show that thermal loading not only has an effect on dynamic characteristics but also reduces the vibration fatigue life of the structure.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference3 articles.

1. Milan J Lucic: A Finite Element Study of Ball Grid Array Components in Common Aerospace Random Vibration Environments. Master's Thesis in Mechanical Engineering. Rensselaer Polytechnic Institute Hartford, Connecticut (2010).

2. Santhosh M. Kumar: Analyzing Random Vibration Fatigue. ANSYS Advantage. Vol2, Issue 3, (2008).

3. Luo P.: Analysis on Structural Vibration Fatigue Life under Thermal Load. Bachelor's Thesis in Vehicle Operation Engineering. Nanjing University of Aeronautics and Astronautics (2013).

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