Font Size:
Modeling and simulation of vehicle behavior in Simulink using a 7-DOF dynamic model
Last modified: 2026-08-27
Abstract
The paper presents the development and application of a 7-degree-of-freedom dynamic model for the analysis of vehicle behavior, using the Simulink simulation environment. The developed model aims to reproduce dynamic phenomena, including the motions of the sprung mass (vertical displacement, roll, and pitch) as well as the dynamics of the unsprung masses associated with the wheels. The model structure is developed in a modular manner, enabling a clear representation of the physical subsystems and their interactions. The equations of motion are formulated as a system of coupled differential equations and are implemented using functional blocks specific to the simulation environment, facilitating both numerical analysis and subsequent model extension. One advantage of using the Simulink environment lies in its flexibility in defining excitation conditions, such as road profiles or time-varying dynamic loads. Thus, the model allows for the investigation of vehicle response under various scenarios relevant to ride comfort and stability assessment. The simulation results highlight the model’s capability to capture system behavior, as well as the influence of design parameters on the dynamic response. Furthermore, the proposed approach provides an efficient framework for integrating additional models, such as control systems or nonlinear suspension elements.