摘要
为更好地研究路面不平整度下车辆对路面的动载作用,运用1/4车辆振动模型,借助MATLAB数学计算软件,分析路面不平整度、车辆参数等因素对动载系数的影响规律。结果表明:车速、路面振幅对动载系数影响很大,路面振幅与动载系数呈线性关系,验证了路面不平整是导致动载的主要原因;汽车结构参数中的轮胎阻尼、悬架刚度、悬架阻尼对动载系数影响较小,但减小轮胎刚度可以显著地减小动载。从道路设计的角度考虑,提高道路的平整度是减小动载的重要措施。
In order to study the dynamic load effect of vehicle running on uneven pavement further,a quarter-vehicle vibration model was applied to analyze the influence law of dynamic load coefficient based on the pavement roughness,vehicle parameters and other factors by using MATLAB software. Calculation result indicates that speed and the road surface amplitude have a great influence on the dynamic load coefficient,and pavement amplitude has a linear relationship with dynamic load coefficient. It is also indicated that the main cause of the dynamic load is pavement roughness; tire damping,suspension stiffness and suspension damping have less impact on the dynamic load coefficient than others,meanwhile,to reduce the tire stiffness can significantly reduce the dynamic load. From the view point of road design,to improve the road roughness is an important measure to reduce the dynamic load.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2015年第4期77-80,90,共5页
Journal of Chongqing Jiaotong University(Natural Science)
基金
河北省高等学校科学研究计划项目(Q2012156)
关键词
道路工程
振动模型
车辆参数
动载系数
road engineering
vibration model
vehicle parameters
dynamic load coefficient
