Stress and vibration analysis on chassis and cabins of 4 wheel drive vehicles

This work was carried out for research of the dynamic response of the 4WD Tayfun gunvehicle which is produced by 7. Bakım Merkezi Komutanlığı, Tuzla Plant in different roadconditions. First of all, a seven degrees of freedom analytical model of the vehicle was built.Simulation was made in computer environment for different payload and road conditions forseven degrees of freedom analytical model. Matlab and Simulink softwares were used forsimulations.Stress and vibration analysis were made by using finite element methods for chassis and bodyin white, while vehicle is going over various bumps. First , a finite elemet model of thevehicle was prepared and natural frequencies of the vehicle were found. ABAQUS was usedas a package software. After that, simulations were made for the scenarios which include thevehicle going over bumps. So critical areas on the vehicle structure in terms of strenght invarious road types were determined.Keywords: Vehicle dynamics, modal analysis, finite element method, vibrationxiv