Fatigue lifetime estimation of commercial vehicles

A computational procedure for the analysis and design of commercial vehicles structures is the main objective of this work. Random fatigue analysis due to the effect of rough pavement surfaces is carried out in the time domain based on Wöhler's curves (stress levels vs. number of cycles), the P...

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Bibliographic Details
Published in:Journal of sound and vibration 2006-03, Vol.291 (1), p.169-191
Main Authors: Boéssio, Mario Leonardo, Morsch, Inácio Benvegnu, Awruch, Armando Miguel
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Solid mechanics
Static elasticity (thermoelasticity...)
Structural and continuum mechanics
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Summary:A computational procedure for the analysis and design of commercial vehicles structures is the main objective of this work. Random fatigue analysis due to the effect of rough pavement surfaces is carried out in the time domain based on Wöhler's curves (stress levels vs. number of cycles), the Palmgreen–Miner's rule to compute the cumulative damage and the rainflow method for cycles counting. First-order reliability method (FORM) and Monte Carlo simulation with importance and adaptive sampling (MCSIAS) are used to evaluate the reliability index, which may be employed as a constraint in the weight optimization process. The structural weight optimization is performed using Farkas’ method with discrete variables.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2005.06.002