A multibody spatial model of a double wishbone independent suspension system with a torsion bar as the elastic element was established and the dynamics equations of the system were deduced.

• 摘要建立了以扭杆为弹性元件的双横臂独立悬架系统的空间多体系统模型，推导出了系统的动力学方程和双横臂独立悬架系统刚度计算公式，并用所编制的软件进行了悬架刚度的计算。