摘要
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CA6440G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CA6440G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。
With considering elastic and damping modulus of suspendens and wheels, a vehicular model of system＇ s vibration and a differential equation group of vibration with influence of rough road were built. This differential equation group is a ordinary differential equations and initial conditions can be found or assume. With Laplace change and theory of lineal system, a method of calculable systematical self-frequencies was given, and the analytic result of differential equation was obtained. With the relation between the special solution and common solution of a differential equation, a analytic result was gotten. The analytic result lays stress on controlling study and can be used in program and simulink. These results amend the express styles of JIEFANG CA6440G vehicle suspension in moving force. Preparedness for finite element in design and simulation was done.
出处
《机械设计与制造》
北大核心
2005年第9期72-73,共2页
Machinery Design & Manufacture
基金
国家自然科学基金资助项目(59835050)
关键词
车辆工程
动载荷
数学模型
悬架
Vehicle engineering
Moving force
Mathematics model
Suspension
