No.1022E 2026Special Edition on the Technologies that Support Manufacturing and Manufacturing Equipment Improving Driveshaft Strength Analysis Accuracy by Incorporating the Effects of Heat Treatment

Category TECHNICAL REPORT
Author K. FUNAHASHI
Driveline Experiment & Analysis Dept., Automotive Business Unit
K. ICHIKAWA
Doctpr of Engineering, Driveline Experiment & Analysis Dept., Automotive Business Unit
Abstract Driveshafts are used to transmit the driving force in automobiles. The required shaft strength is ensured by applying heat treatment to the internal parts. This paper presents a method to improve the accuracy of strength predictions for driveshafts by incorporating the effects of heat treatment on the distributions of hardness, strain, and residual stress into strength analysis. By comparing strain amounts between analysis and actual measurements, it was confirmed that this novel method can predict the actual measurements better than conventional methods, and therefore improve the accuracy of strength predictions.
Keyword driveshaft, CVJ, CAE, strength, heat treatment
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Summary:5,2026