Development of Accelerated Life Test Schedule for Rig Testing of Live Axles Based on Road Load Data and Its Correlation with Field

Mohire, Sujit; Kathale, Pravin; Chaskar, Mithun; Tendulkar, Vishveshvar

doi:10.4271/2018-01-0099

Cited by 1 publication

(1 citation statement)

References 4 publications

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“…While multiple nonlinear damage accumulation models have been proposed in the literature, they have not been validated for enough load cases to conclude their generic performance [38]. Therefore, Minor's linear damage accumulation rule is widely accepted for fluctuating load applications, even though it does not account for load sequence [24], [30], [39].…”

Section: B Accelerated Fatigue Lifementioning

confidence: 99%

Rotor Fatigue Life Calculation Using Constant-Amplitude Load Cycles for an Interior Permanent Magnet Synchronous Motor

Kumar Sahu,

Haddad,

Al-Ani

et al. 2024

IEEE Access

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Interior Permanent Magnet Synchronous Motors (IPMSM) are widely used as traction motors today because they can deliver high torque at low speeds, and high efficiency at low-and medium-speed ranges. Air flux barriers and bridges of an IPMSM have contradictory electromagnetic and structural requirements. The rotor undergoes a fluctuating load due to varying speeds in a drive cycle. Designing the rotor with the yield strength as a design criterion might not be sufficient. Fatigue life should be evaluated considering the mean value and amplitude of the fluctuating load profile, and the acceptance criteria should be derived based on field operations. This paper proposes a constant amplitude load cycle as an accelerated fatigue analysis approach for an IPMSM rotor and presents a fatigue analysis workflow considering the thermal and mechanical loads. It also presents the loads and boundary conditions for rotor stress analysis and the effect of elastic and elastic-plastic material properties on stress calculation.

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