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在虚位移分析基础上，利用拉格明日方程推导并建立了单侧前独立悬架系统线性四自由度动力学模型，并利用此模型进行了系统在不同激振力作用下强迫振动响应计算方法的探讨。编制了相应的计算机程序。建立的数学模型和计算方法反映了单侧前独立悬架系统（整车了结构之一）的动力学特性，有助于悬架的设计及汽车动力学问题的研究。
Based on the analysis of virtual displacement, the dynamic four-degree-of-freedom model of one-sided front independent suspension system is deduced and established by Lagrange’s equation. The model is used to calculate the forced vibration response under different excitation forces Discussion. Compiled the corresponding computer program. The established mathematical model and calculation method reflect the dynamic characteristics of one-sided front independent suspension system (one of the vehicle structure), which is helpful for the design of suspension and the research of vehicle dynamics.