Fatigue Life Prediction of Half‐Shaft Using the Strain‐Life Method

Abstract

Fatigue life prediction is an important part of the reliability and durability analysis of automobile components. Based on Wang and Brown’s framework, multiaxial random fatigue damage was adopted to predict the fatigue life of half-shaft. The stress analysis of half-shaft was resolved analytically to determine the local stress tensor in the potential area of fracture. The maximum shear strain fatigue damage parameter and the normal stress fatigue damage parameter were evaluated to predict the fatigue life of half-shaft. The results show that the prediction method is reliable and meets the service life and safety requirements.

A new approach for correlating Paris parameters with fatigue life of aircraft fuselage panels

“…In recent papers, there is a series of fatigue studies on structural elements. Among them, the works [14]- [17] stand out. Ma [14] examined fatigue life prediction in automobile components.…”

“…Among them, the works [14]- [17] stand out. Ma [14] examined fatigue life prediction in automobile components. In this work, multiaxial random fatigue damage was adopted to predict the fatigue life of half-shaft and the results show that the prediction method is reliable and meets the service life and safety requirements.…”

Random fatigue life prediction of automobile lower arm via modified Corten–Dolan model

“…What's more, its value decreases as the load increases. Gao et al 38 redefined d. And the redefined exponential parameter d is shown as Equation (17).…”

“…The fatigue of mechanical components has also been a valuable topic. 16,17 As early as 1843, Wohler studied the fatigue phenomenon, and he established the S-N curve containing the fatigue limit in 1870. In 1945, Miner proposed a linear cumulative damage criterion based on the concept of linear damage proposed by Palmgren.…”

“…The fatigue life prediction, 5–9 fatigue damage mechanism, 10–13 and the influence of material manufacturing process on fatigue performance 14,15 for various materials have been a hot topic of research. The fatigue of mechanical components has also been a valuable topic 16,17 …”