A solution for vibration analysis of truck cabin

This study aims to: (1) apply computer-aided engineering to automotive design, (2) investigate the dynamic load transmission lines causing vibrations in the truck cabin, and (3) analyze and compare vibration characteristics on different road types. A model of a light truck was numerically examined. A frequency response function and a dynamic simulation were used to study how the road surface's excitation force affects structure vibration. The Multi-body Dynamics simulation was performed to estimate the external force acting on the vehicle. In the case of a flat road at a speed of 60 km/h, the counterforce values almost remain constant, corresponding to 1 G. In the case of a vehicle crossing a hole, at a speed of 30 km/h, the counterforce is about 3.57 and 5.67 G at the front and rear axles, respectively. On a bumpy road, at 30 km/h, the counterforce is about 3.3 G on the front axle and 7.2 G on the rear axle. The FRF analysis shows that the truck cabin's resonant frequency is 29 to 32 Hz.