摘要
针对传统两段式钢制传动轴结构复杂、笨重且单段弯曲固有频率低的问题,提出采用一段式碳纤维混合传动轴的解决方案.传动轴外层为铝合金材料,主要用传递扭矩;中间层为玻璃纤维材料,可用于消除碳纤维材料固化时产生的残余热应力;内层为碳纤维复合材料,利用其具有较高比刚度的特点,提高轴的弯曲固有频率.与传统二段式钢制传动轴相比,该传动轴取消了中间万向节和支架,从而简化结构,整根轴的质量减少40%.实验与仿真结果显示一段式混合传动轴能满足至少2700N·m的扭矩传递能力和高于154Hz弯曲固有频率的要求.
One-piece carbon fiber hybrid drive shaft for a rear wheel drive vehicle was proposed to solve the problem that traditional two-piece steel drive shaft has complex structure,heavy weight and low bending natural frequency for single shaft.This drive shaft outer layer was manufactured by aluminum alloy materials,and mainly used to transfer torque;the middle layer was made of the glass fiber materials to eliminate the thermal residual stress generated during the fiber materials being glued into the aluminum shaft;the inner layer was made of carbon fiber materials with high specific stiffness to improve the bending natural frequency of shaft.Compared with the traditional two-piece drive shaft,the hybrid drive shaft removed the middle universal joint and support structure.Therefore,the weight of the whole shaft is reduced by 40%.The result show that the one-piece carbon fiber hybrid drive shaft satisfies the needs of torque transmission capability of at least 2700N·m and bending natural frequency of more than 154Hz.
出处
《武汉工程大学学报》
CAS
2014年第6期59-63,共5页
Journal of Wuhan Institute of Technology
基金
留学回国人员科研启动基金(教外司留[2011]508号)
湖北省自然科学基金项目(2013CFB321)
关键词
混合传动轴
弯曲固有频率
弯扭
振动特性
碳纤维
hybrid drive shaft
bending natural frequency
bending and torsion
vibration characteristics
carbon fiber
