Multiaxial Variable Amplitude Loading for Automotive Parts Fatigue Life Assessment: A Loading Classification-based Approach Proposal - Archive ouverte HAL Access content directly
Conference Papers Year : 2022

Multiaxial Variable Amplitude Loading for Automotive Parts Fatigue Life Assessment: A Loading Classification-based Approach Proposal

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Matteo Facchinetti
  • Function : Author
Cédric Doudard
S. Calloch
Sylvain Moyne

Abstract

This work reports the different steps of a frequency decomposition method applied for fatigue lifetime assessment. The studied loadings are multiaxial time series measured at the vehicle wheel. The proposed decomposition presupposes that the loading results from both dynamic vehicle effects at low frequencies (Driven Road loadings) and random loads at high frequencies (Random Road loadings). This signal partition has two assets for fatigue purposes. First, the spectral methods can be applied to the Random effects. Two spectral damage formulations are tested in this paper. Then, the Driven Road loadings, related to the vehicle manoeuvre, enables to implement the Rainflow counting method on only one time series instead of the initial set of six per wheel, or twelve per axle. The implemented approach illustrated on a braking manoeuvre is validated, comparing the damage summation of the Random and Driven Road loadings with the one based on the usual Rainflow counting method applied to the overall time series.

Dates and versions

hal-03653209 , version 1 (27-04-2022)

Identifiers

Cite

Enora Bellec, Matteo Facchinetti, Cédric Doudard, S. Calloch, Sylvain Moyne. Multiaxial Variable Amplitude Loading for Automotive Parts Fatigue Life Assessment: A Loading Classification-based Approach Proposal. 9th Edition of the International conference on Fatigue Design, Fatigue Design 2021, Nov 2021, Senlis, France. pp.202-211, ⟨10.1016/j.prostr.2022.03.021⟩. ⟨hal-03653209⟩
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