基于位移模态差高斯曲率的中心固定板附加质量单元识别方法  

Identification method of additional mass element of center fixed plate based on displacement mode difference Gaussian curvature

作　　者：吴梦玉 王冲 冯晶晶[1,2] WU Mengyu;WANG Chong;FENG Jingjing(Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control,Tianjin University of Technology,Tianjin 300384,China;National Demonstration Center for Experimental Mechanical and Electrical Engineering Education,Tianjin University of Technology,Tianjin 300384,Chin)

机构地区：[1]天津理工大学,天津市先进机电系统设计与智能控制重点实验室,天津300384 [2]天津理工大学,机电工程国家级实验教学示范中心,天津300384

出　　处：《天津理工大学学报》2023年第2期1-5,共5页Journal of Tianjin University of Technology

基　　金：国家自然科学基金(12072233,12072234);天津市自然科学基金(20JCYBJC00510,20JCQNJC01070)。

摘　　要：提出一种基于位移模态差高斯曲率的中心固定板结构附加质量单元的识别方法。运用有限元仿真法,对无附加质量及不同附加质量单元工况下的板结构进行模态分析,并对其数据进行曲率模态计算。结果表明:现有高斯曲率差法对于中心固定板结构附加质量单元识别存在不足,而文中所提出的位移模态差高斯曲率法可通过突变准确识别附加质量单元的位置,且能对附加质量单元的大小进行识别。An identification method of additional mass elements of a center fixed plate structure based on displacement mode difference Gaussian curvature is proposed.Using finite element simulations,the modal analysis of the plate structure under the condition of no additional mass and different additional mass units is carried out,and the curvature modal calculations of the data are conducted.The results show that the existing Gaussian curvature difference method is inadequate for identifying additional mass elements of the center fixed plate structure.The proposed displacement mode can accurately identify the location of an additional mass element through mutation,and can also identify the size of the additional mass element.

关 键 词：位移模态 高斯曲率 中心固定板结构 附加质量单元识别 

分 类 号：O321[理学—一般力学与力学基础]