EXPERIMENTAL STUDY ON DETERMINING THE TORSIONAL STIFFNESS OF ANTI-ROLL BAR IN TRUCK

Tóm tắt

This study focuses on developing a methodology to measure and determine the torsional stiffness of an anti-roll bar through experimental testing. A dedicated test system was constructed to simulate the actualloading conditions experienced at the end of the anti-roll bar during realworld vehicle operation. The testing procedure involved gradually applying load to one end of the bar while monitoring displacement at specific positions along the bar and recording force responses using high-precision sensors and the Dewesoft data acquisition system. The experimental data were then used to calculate torsional stiffness and compared with theoretical values derivedfrom analytical formulas based on SAE standards. The geometric parameters and material properties of the anti-roll bar were incorporated into the modelto ensure accuracy. The test results confirmed that the torsional stiffness ofthe anti-roll bar installed on the 15-ton ISUZU truck is 56420.24Nm/rad, providing a solid foundation for further mechanical analysis and designcalibration of anti-roll bars for trucks. This research supports the improvement of suspension system design, contributing to enhanced safety, load control,and roll stability for large commercial vehicles.