Damage Mechanics-Finite Element Method for Vibrational Fatigue Life Prediction of Engineering Structures with Damping

Abstract:

This paper provides a new method which is damage mechanics to predict the fatigue life of engineering structure with damping under resonant loading. The material parameters are obtained by the results of the fatigue test of standard specimens. And based on the further development of APDL language, damage mechanics-finite element method for vibration life prediction under resonant loading is used in ANSYS. Finally, the vibrational fatigue crack initiation life of an aluminum alloy beam with damping carrying load of various frequencies is calculated. Whats more, this research provides a feasible way to predict the fatigue live of an engineering structure by means of damage mechanics.

• Periodical: Applied Mechanics and Materials (Volume 472)
• Pages: 17-21
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.472.17
• Online since: January 2014
• Authors: Lin Lin Sun, Wei Ping Hu, Miao Zhang, Qing Chun Meng
• Keywords: Damage Mechanics, Finite Element, Life Prediction, Vibration Fatigue Life

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