Paper Title:

A Calculation Method of Vibration Fatigue Life with Coupling Effect

Periodical Advanced Materials Research (Volume 338)
Main Theme Product Design and Manufacturing
Chapter Chapter 3: Mechanical Dynamics and its Applications
Edited by Xiaodong Zhang, Zhijiu Ai, Prasad Yarlagadda and Yun-Hae Kim
Pages 411-414
DOI 10.4028/www.scientific.net/AMR.338.411
Citation Wen Guang Liu et al., 2011, Advanced Materials Research, 338, 411
Online since September, 2011
Authors Wen Guang Liu, Hong Lin He
Keywords Crack Growth, Fatigue Life, Vibration Fatigue
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There are different modes of damage in any engineering structures, and most of them are cracks. In order to study the influence of coupling effect on the fatigue life, a calculation method of structure vibration fatigue life with crack propagation is proposed. In analysis, a series of finite element model with crack of different length is built to simulate the crack propagation, and Paris equation is employed to calculate the vibration fatigue life by stepwise method. The crack initiation life is got based on the change law of natural frequency from test results, and the total life is calculated in the end. Results indicate that the simulation results identical with the experimental results well.

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