Bridge Crane Random Stress Spectrum Processed and Fatigue Life Analysis

Ai Hong Wang; Ying Qi Liu; You Shan Gao

doi:10.4028/www.scientific.net/AMM.713-715.139

Paper Titles

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 713-715Bridge Crane Random Stress Spectrum Processed and...

Bridge Crane Random Stress Spectrum Processed and Fatigue Life Analysis

Abstract:

This paper estimates the fatigue residual life of bridge crane with probability distribution model of stress spectrum, which influences the main parameters of the stress characteristics of the fatigue accounting point.Random sample of load spectrum parameters are produced by Latin hypercube.We can use the dynamic simulation model to calculate the stress-time history during the entire simulation at the accounting point of fatigue,and then with rainflow counting to obtain the double parameters stress spectrum. The result is that the bridge crane has 22630 lifting cycles and 37566 stress cycles in two years of an inspection cycle, and stress spectrum includes 10 stress amplitude and mean stress.

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Periodical:

Applied Mechanics and Materials (Volumes 713-715)

Pages:

139-142

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.713-715.139

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Online since:

January 2015

Authors:

Ai Hong Wang*, Ying Qi Liu, You Shan Gao

Keywords:

Dynamic Simulation, Fatigue Life, Rainflow Counting, Stress Spectrum

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