To address the design optimization requirements of MacPherson strut independent suspension systems, a dynamic model of this suspension system is constructed based on multibody dynamics theory, considering its unique geometric configuration and parameter variation patterns. The motion characteristics are revealed through the derivation of differential equations. The results demonstrate that the established mathematical model can accurately characterize the dynamic relationships among various components during the suspension’s motion, thereby validating the effectiveness of the parametric modeling approach. This study provides a theoretical foundation and computational basis for performance prediction, structural optimization of MacPherson strut independent suspension systems, and the evaluation of their impact on overall vehicle dynamic characteristics.

MacPherson suspension  /  System dynamics  /  Degree of freedom  /  State space  /  Simulation analysis