解放CA6440G2汽车通过单一突起物时悬架的动载

Dynamic load on JIEFANG CA6440G2 vehicle suspension when passing through single protrusion

在考虑阻尼和刚度的前提下,建立了路面不平度影响下的解放CA6440G2汽车悬架振动系统模型及微分方程表达式.通过拉氏变换和线性系统理论给出了求系统固有频率的方法并得出了微分方程的解析解,该解离散精度好,可直接应用于控制和仿真模拟.这种解法与计算过程完善了解放CA6440G2汽车悬架动载荷的表达式,为悬架的有限元动态分析与设计提供了载荷方面的准备.

Considering rigidity and damping modulus of suspendens and wheels, a vehicular model and a differential equation group for vibration under the influence of rough road were built. This differential equation group is an ordinary one and the initial conditions can be found or assumed. With the help of Laplace transformation and linear system theory, a method for calculating natural resonant frequencies was given, and the analytical result of differential equation was obtained. This solution has high precision and can be applied for control and simulation directly With this method, the expressing modes of JIEFANG CA6440G2 vehicle suspensio under dynamic load can be amended, which provides fact for dynamic finite element analysis.