摘要
为提高超高加速度宏微运动平台完成定位工作时的安全性和精确性,以宏微运动平台的关键部件柔性定位平台为研究对象,探究宏微运动平台在微定位工况下对柔性定位平台疲劳寿命的影响。利用SolidWorks建立柔性定位平台的三维模型,在ANSYS Workbench进行静力分析和瞬态动力学分析,获得柔性定位平台危险点的位置及疲劳分析所用载荷谱。运用Goodman曲线评估方法对平台进行疲劳评估,得出的数据均在Goodman曲线框内,评估结果合理。最后利用nCode计算柔性定位平台的疲劳损伤和疲劳寿命,得出随着驱动频率的增加,柔性定位平台的疲劳寿命在降低的结论。研究结果对超精密定位平台的研究提供了参考。
In order to improve the safety and accuracy of the positioning work of the ultra-high acceleration macro-micro motion platform,taking the flexible positioning platform,the key component of the macro-micro motion platform,as the research object,the influence of the macro-micro motion platform on the fatigue life of the flexible positioning platform under the micro-positioning condition was explored.The 3D model of the flexible positioning platform was established by SolidWorks,and the static analysis and transient dynamic analysis were carried out in ANSYS Workbench to obtain the location of the dangerous point of the flexible positioning platform and the load spectrum used for fatigue analysis.The fatigue evaluation of the platform was carried out using the Goodman curve evaluation method.The data obtained were all within the Goodman curve frame,and the evaluation results were reasonable.Finally,nCode was used to calculate the fatigue damage and fatigue life of the flexible positioning platform.It is concluded that with the increase of the driving frequency,the fatigue life of the flexible positioning platform is decreasing.The research results provide reference for the research of the ultra-precision positioning platform.
作者
姜薄士
张璐凡
张鹏启
闫恒
JIANG Boshi;ZHANG Lufan;ZHANG Pengqi;YAN Heng(School of Mechanical and Electrical Engineering,Henan University of Technology,Zhengzhou Henan 450001,China)
出处
《机床与液压》
北大核心
2023年第20期187-193,共7页
Machine Tool & Hydraulics
基金
国家自然科学基金青年科学基金项目(51705132)
河南省科技厅自然科学项目(222102220088)
河南省教育厅自然科学项目(21A460006)。
