47-车辆—人体系统振动的非线性时域_王岩松.pdfVIP

CAE 121001 : SY6480 Visual C++ AVAS : Nonlinear Time Domain Simulation and Software Development of Vehicle and Human System Vibration Wang Yansong Chen Yingchun Li Yan School of Automobile and Transportation Engineering, Liaoning Institute of Technology, Jinzhou, Liaoning, 121001 AbstractBased on the SY6480 light bus, a nonlinear dynamic model of twelve degrees of freedom of vehicle vibration system including road and human body is established in this paper. By detaching the nonlinear characteristics of leaf springs and shock absorbers, the system dynamic equations and a multi-step linearizing algorithm is used to simulate the vehicle-human system vibration under a random correlated four-wheel excitation, thereby the response spectral analysis. Experimental verification shows that the proposed model is accurate and reliable than the simulation and analysis methods are feasible. Based on the above process, furthermore, a software named AVAS is developed by Visual C++, which can be used as an accessorial tool to actualize analysis, prediction and parameter optimization of the ride performance in automobile design. Key Words: Vehicle-human system Nonlinear random vibration Numerical simulation Software development [1-4] 247 CAE 2.1 1 X Y Z 1 2.2 Fs ks 1x +ks 2 x 3 ( 1) x Fs ks 1 ks 2 2.3 SY6480 SY6480 cD 1x x -1.0(m/s) n-2 F = - 1.0 x 1.0(m/s