摘要
针对汽车传动轴在工作中因外部激励而共振的问题,通过三维建模软件CATIA建立了某轻型卡车传动轴模型并导入有限元分析软件ANSYS中,对主传动轴和中间传动轴在自由模态情况下以及传动轴总成在约束模态情况下的前6阶非刚体自由模态参数进行了研究。分别对传动轴不同轴管长度和壁厚相对应的模态参数变化规律建立了数学模型,并进行了归纳;提出了一种基于有限元技术的汽车传动轴模态参数优化的方法,利用有限元软件ANSYS对优化后的模型进行了测试。研究结果表明:通过减小传动轴轴管壁厚1 mm可使传动轴总成1阶固有频率从132.82 Hz提高到138.49 Hz,满足避免共振的要求。
Aiming at the problem of external excitation resonance of automobile drive shaft,and the 3 D software CATIA was used to build the automobile transmission shaft model.The automobile transmission shaft was imported into the finite element analysis software ANSYS.and the first 6-order non-rigid free-mode parameters of the main drive shaft and the intermediate drive shaft in the free mode and the drive shaft assembly in the constrained mode were studied.The mathematical models were established and summarized for the variation of modal parameters corresponding to different shaft tube lengths and wall thicknesses of the drive shaft.A method based on finite element technology for modal parameter optimization of automobile transmission shaft was proposed,and the optimized model was tested by finite element software ANSYS.The results show that reducing the shaft tube wall thickness by 1 mm can increase the natural frequency of the first order of the transmission shaft assembly from 132.82 hz to 138.49 Hz,which meets the requirement of avoiding resonance.
作者
赵生莲
唐熊
张健
ZHAO Sheng-lian;TANG Xiong;ZHANG Jian(Transportation and Automotive Engineering Institute,Panzhihua University,Panzhihua 617000,China)
出处
《机电工程》
CAS
北大核心
2020年第6期710-714,共5页
Journal of Mechanical & Electrical Engineering
基金
四川省教育厅科研计划项目(18ZA0293)
攀枝花学院科研培育项目(2019ZD002)。
关键词
ANSYS
有限元
模态
汽车传动轴
优化
ANSYS
finite element
modal
automobile drive shaft
optimization
