农用拖车尾部防钻装置设计及模态分析  

The Design and Modal Analysis of Anti-enter Device on Agricultural Trailer's Tail

作　　者：瞿炳华[1] 于建国[1] 

机构地区：[1]东北林业大学交通学院,黑龙江哈尔滨150040

出　　处：《安徽农业科学》2014年第33期11980-11982,11993,共4页Journal of Anhui Agricultural Sciences

基　　金：中央高校基本科研业务费专项资金项目(DL12BB02)

摘　　要：基于农用拖车尾部结构特点,结合乘用车的外形尺寸、事故车辆的碰撞速度等参数,通过对碰撞力及碰撞能量的计算,设计了农用拖车尾部的防钻装置,此装置所设计的双层螺栓剪切装置可以在碰撞发生时通过变形及断裂,吸收车辆碰撞时所产生的能量,避免乘用车钻入农用拖车造成人员伤亡。为检验防钻装置与农用拖车的系统匹配性,在Pro/E中建立该装置的三维实体模型,应用ANSYS有限元分析软件对其进行振动响应特性分析,计算了自由状态下该防钻装置的固有频率,通过对模态分析的10阶模态振型图的分析,得知该防钻装置与农用拖车无共振现象,为实际模态试验提供了参考和依据。The anti-enter device on agricultural trailer＇ s tail is developed to forbid car entering the below of agricultural trailer based on the structure of it,the size of cars,and the collision velocity,etc.The double bolts shear device is developed to adsorb impact energy through deformation and fracture of bolts according to the calculated impact force and the energy.In order to check the dynamic matching characteristic between the anti-enter device and the agricultural trailer,three-dimensional numerical model is build in pro/E to analyze the vibratory response characteristic of the anti-enter device by Ansys.The natural frequency of anti-enter device is calculated without load.There is no resonance between the anti-enter device and agricultural trailer by analyzing from l0 phase modal figures,which can provide reference for realistic modal test.

关 键 词：农用拖车 防钻装置 追尾事故 碰撞吸能 模态分析 动态响应 

分 类 号：S229[农业科学—农业机械化工程]