Journal
MATERIALS & DESIGN
Volume 31, Issue 8, Pages 3859-3868Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2010.03.044
Keywords
Elastomers and rubber; Laminates; Fatigue
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This paper presents a method for estimating the fatigue life of the air-spring, used in truck-cab suspension. Experimental fatigue data, together with finite element analysis data, was used to form the stress life (S-N) curve. Experimental data was obtained from several accelerated experiments using constant load amplitude. Finite element analysis was used to describe the stress-strain conditions in the air-spring's bellows. Stress tensors gained by FE analysis were exported and used to calculate equivalent uni-axial stresses, using the critical plane approach. To calculate the fatigue life of the air-spring the Palmgren-Miner linear damage hypothesis was used. The same hypothesis was also used to transform linear loading spectrum to constant amplitude load spectrum. (C) 2010 Elsevier Ltd. All rights reserved.
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