侧风对大桥上行驶车辆稳定性影响的计算机仿真  

Computer Simulation of Effect of Cross-Wind on Stabilization of Vehicle on Bridge

作　　者：罗荣锋[1] 谷正气[1] 

机构地区：[1]湖南大学机械与汽车工程学院,湖南长沙410082

出　　处：《计算机仿真》2005年第1期238-240,共3页Computer Simulation

基　　金：国家自然科学基金资助项目 ( 5 0 2 75 0 5 2 )

摘　　要：汽车驶过有横向风作用的大桥是汽车行驶典型工况。汽车所受的侧风作用力可以转化为作用于汽车风压中心的力 ,该文建立汽车驶上大桥驶过桥墩所受侧风风谱 ,利用ADAMS里的汽车动力学模型 ,通过参数修改 ,计及侧风风压中心位置和风速的改变对汽车稳定性的影响 ,对匀速行驶汽车的侧风作用下的瞬态响应进行仿真。基于模拟结果 ,得出风压中心靠近质心而且风速小的时候汽车稳定性好。同时考虑驾驶员的反应 ,对方向盘施加以转角输入的汽车稳定性进行仿真分析。结果表明 ,在通常的侧风风速下 ,驾驶员能够安全驾驶汽车 。It is very typical that a car goes through a bridge with cross-wind. The wind load on the car can be transformed to a force acting on the center of pressure. This paper numerically simulates the lateral wind load on a car going through the bridge, by amending the parameter, using the vehicle's dynamic model in ADAMS , and simulates the transient response of car under the condition of invariable driving speed and studies the influence of changing the center of pressure and wind speed on the stability of the car. This paper also considers the response of driver and simulates the response of car with angular input of wheel. It can be concluded from the result of simulation that the driver can steer the car with normal wind safely.

关 键 词：汽车 侧风 计算机仿真 侧风稳定性 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]