摘要
由于随机振动是影响载货汽车行驶平顺性的主要因素,同时,为了推广虚拟激励法在载货汽车随机振动分析领域的应用,阐述了广义单点虚拟激励法的基本理论,建立了含有平衡悬架的载货汽车五自由度振动结构模型。应用虚拟激励法建立了载货汽车的虚拟路面激励,给出了真实振动响应的功率谱密度。通过仿真实例,验证了仿真方法在载货汽车随机振动分析中的有效性。
Random vibration is a key factor on ride comfort,as while,in order to expand the application of pseudo-excitation method in the field of random vibration analysis of trucks, basic theories are discussed on generalized single-point pseudo-excitation method, five-degree of freedom model of truck is constructed with balanced suspension. Pseudo road excitation is constructed with pseudo-excitation method, power spectrum densities of real responses are given. By the simulation of an example ,the effectiveness of simulation method is proved for random vibration analysis of trucks.
出处
《拖拉机与农用运输车》
2011年第1期89-92,共4页
Tractor & Farm Transporter
关键词
随机振动
虚拟激励
行驶平顺性
五自由度载货汽车模型
Random vibration
Pseudo excitation
Ride comfort
Five-degree of freedom model of trucks
