不同运动曲线下的柔性梁动力学仿真研究  

Dynamic simulation of flexible beams under different motion curves

作　　者：胡俊宏[1] 张天迟 陈伟 李珊珊[1] HU Jun-hong;ZHANG Tian-chi;CHEN Wei;LI Shan-shan(College of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学机械工程学院,辽宁沈阳110870

出　　处：《重型机械》2020年第1期49-52,共4页Heavy Machinery

摘　　要：运动曲线的形状影响高速旋转柔性梁的运动精度,为了抑制梁的振动,提高梁的定位精度,本文基于Ansys Workbench有限元分析软件对柔性梁的高速旋转运动过程进行动力学仿真,通过采用不同的速度曲线求解梁运动角位移180°停止时的位置误差。结果表明:在曲线的各项参数中加速度的峰值对梁的定位精度具有重要的影响,在设计运动曲线时可以通过各种运动曲线的组合来减小加速度的峰值,使得转子的运动更加平稳,定位精度更高。The shape of the motion curve will affect the motion accuracy of the high-speed rotating flexible beam.In order to suppress the vibration of the beam and reduce the positioning error of the beam when it stops,based on the Ansys Workbench finite element analysis software,the dynamic analysis of the high-speed rotation of the flexible beam is carried out.When the beam stops under the 180°motion angle displacement,its positioning error is solved through different speed curves.The analysis results show that the peak value of acceleration has an important influence on the positioning accuracy in the motion curve parameters.So the peak acceleration can be reduced by combination of various motion curveswhen designing the motion curve,which makes the rotor run more stable and the positioning accuracy higher.

关 键 词：数值仿真 柔性梁 运动曲线 动力学分析 

分 类 号：TP202.2[自动化与计算机技术—检测技术与自动化装置]