介绍了在前轮角阶跃输入下线性二自由度汽车模型的瞬态响应，讨论了行驶车速对汽车瞬态响应的影响。
This paper introduces the transient state response of the vehicle model which has two linear degrees of freedom with a step input of the front wheel.
应用广义协调元理论，通过增加内参位移的方法，构造了两个具有旋转自由度的三角形膜元。
Based on the theory of generalized conforming element, two triangular membrane elements with rotational degree of freedom are developed by introducing internal parameters into its displacement field.
根据小车吊重系统三维动力学方程建立了吊重二自由度摆角的数学模型。
A 2-degree of freedom model of load swing angel was derived based on 3-dimensional dynamic equations of the trolley-load system.
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