【摘要】 基于 8自由度的车辆动力学模型 ,以四轮相关滤波白噪声路面为系统输入 ,对四轮车辆的非平稳随机振动过程进行了计算机时域模拟 ,进而采用谱分析和小波分析技术分析了系统响应 ,在时频平面内建立了各振级之间的振动联系 ,考察了振动能量的流动情况 ,深入揭示了车辆非平稳振动过程的本质更多还原

【Abstract】 Based on a 8 DOFs vehicle dynamic model,the nonstationary random vibration process of a four wheel vehicle is simulated in time domain with a so called four wheel correlated filtered white noise road roughness as system input Then by using the spectral and wavelet analysis techniques,the system responses are analyzed The correlation between different vibration levels is established And the vibration energy flow is also investigated更多还原