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期刊Dynamic Characteristics of Marine Risers Conveying Fluid被引量:20
《中国海洋工程:英文版》2000年第2期153-160,共8页郭海燕 王树青 吴纪宁 刘德辅 
National 95 Science an Technology Project(96-922-03-03)
The lateral vibration differential equation for a marine riser conveying fluid is derived by use of the small deflection theory, and the effect of internal flow velocity and top tension on the natural frequency of the...显示全部
关键词:marine riser conveying flowing fluid natural frequency finite element method 
期刊Analysis of the dynamic characteristics and stochastic simulation on variations of beach volumes被引量:5
《海洋学报:英文版》1995年第3期393-403,共11页Chen Zishen(Institute of Estuarine and Coastal Research of Zhongshan University, Guangzhou 510275, China) 
Analysisofthedynamiccharacteristicsandstochasticsimulationonvariationsofbeachvolumes¥ChenZishen(InstituteofE...显示全部
关键词:BEACH volume VARIATIONS natural frequency damping ratio MULTI-DIMENSIONAL spectral estimation STOCHASTIC SIMULATION 
期刊基于固有频率向量的结构损伤检测实验研究被引量:4
《机械强度》2008年第6期897-902,共6页王乐 杨智春 谭光辉 刘江华 
教育部新世纪优秀人才支持计划(NCET-04-0965);航空科学基金(04I53072);高等学校博士学科点专项科研基金(20060699001)资助课题~~
引入固有频率向量及固有频率向量置信准则的概念,提出基于固有频率向量的结构损伤检测方法。以一个8层剪切框架模型的损伤检测为例,阐述用该方法进行损伤检测的原理和步骤。首先根据修正后结构的动力学模型,用局部刚度减小的方法,模拟...显示全部
关键词:损伤检测 固有频率向量 固有频率向量置信准则(natural frequency VECTOR ASSURANCE criterion NFVAC)损伤位置 框架结构 
期刊Free vibration analysis of functionally graded material beams based on Levinson beam theory被引量:3
《应用数学和力学:英文版》2016年第7期861-878,共18页Xuan WANG Shirong LI 
supported by the National natural Science Foundation of China(No.11272278)
Free vibration response of functionally graded material(FGM) beams is studied based on the Levinson beam theory(LBT). Equations of motion of an FGM beam are derived by directly integrating the stress-form equations of...显示全部
关键词:functionally graded material(FGM) beam Levinson beam theory(LBT) free vibration shooting method natural frequency 
期刊Precision Balance Method for Cupped Wave Gyro Based on Cup-bottom Trimming被引量:3
《中国机械工程学报:英文版》2012年第1期63-70,共8页TAO Yi XI Xiang XIAO Dingbang TAN Yingqi CUI Hongjuan WU Xuezhong 
supported by National natural Science Foundation of China (Grant No. 51005239)
The mechanical balance process is the key process to eliminate the quadrature error and improve the performance of the cupped wave gyro.The conventional mechanical balance method for cupped wave gyro based on cup-wall...显示全部
关键词:cupped WAVE GYRO PRECISION balance TRIMMING MODAL analysis natural frequency split 
期刊Boundary condition modelling and identification for cantilever-like structures using natural frequencies被引量:1
《中国航空学报:英文版》2019年第6期1451-1464,共14页Wei LIU Zhichun YANG Le WANG Ning GUO 
supported by the National natural Science Foundation of China (No. 11402205);the Aeronautical Science Foundation of China (No. 20171553014);the natural Science Basic Reasearch Plan in Shaanxi Province of China (No. 2018JM5178)
The actual boundary conditions of cantilever-like structures might be non-ideally clamped in engineering practice, and they can also vary with time due to damage or aging. Precise modelling of boundary conditions, in ...显示全部
关键词:BOUNDARY CONDITION IDENTIFICATION BOUNDARY CONDITION MODELLING Iterative method natural frequency Sensitivity analysis 
期刊Dynamic stiffness method for free vibration of an axially moving beam with generalized boundary conditions被引量:1
《应用数学和力学:英文版》2019年第7期911-924,共14页Hu DING Minhui ZHU Liqun CHEN 
Project supported by the National natural Science Foundation of China(Nos.11772181 and11422214);the “Dawn” Program of Shanghai Education Commission(Nos.17SG38 and 2019-01-07-00-09-E00018);the Key Research Project of Shanghai Science and Technology Commission(No.18010500100)
Axially moving beams are often discussed with several classic boundary conditions, such as simply-supported ends, fixed ends, and free ends. Here, axially moving beams with generalized boundary conditions are discusse...显示全部
关键词:AXIALLY moving BEAM natural frequency TIMOSHENKO BEAM model DYNAMIC stiffness matrix generalized boundary condition 
期刊Method for Detecting Multi-Modal Vibration Characteristics of Landmines被引量:2
《仪器仪表学报:英文版》2018年第4期39-45,共7页WANG Chi DUAN Naiyuan WU Zhiqiang MA Hui ZHU Jun 
supported,in part,by the National natural Science Foundation of China(Grant No.61773249);the natural Science Foundation of Shanghai(Grant No.16ZRl411700);the Science and Technology on NearSurface Detection Laboratory(Grant No.6142414090117,TCGZ2017A006)
The acoustic vibration characteristics of landmines are investigated by means of modal analysis. According to the mechanical structure of landmines, a certain number of points are marked on the landmine shell to analy...显示全部
关键词:MULTI-MODAL VIBRATION natural frequency VIBRATION Mode ACOUSTIC LANDMINES Detection 
期刊Free vibration of non-uniform axially functionally graded beams using the asymptotic development method被引量:1
《应用数学和力学:英文版》2019年第1期85-96,共12页Dongxing CAO Yanhui GAO 
Project supported by the National natural Science Foundation of China(No.11672008)
The asymptotic development method is applied to analyze the free vibration of non-uniform axially functionally graded(AFG) beams, of which the governing equations are differential equations with variable coefficients....显示全部
关键词:AXIALLY functionally graded(AFG)beam NON-UNIFORM natural frequency ASYMPTOTIC development method 
期刊Research on Horizontal Vibration of Heavy-Weight Drill Pipes in Directional Drilling被引量:2
《中国海洋工程:英文版》1992年第4期403-414,共12页Jiang Wei Wang Lan Engineer, Drilling Department of Bohai Oil Corp of CNOOC, Tanggu, 300452, Tianjin Engineer, Well Testing Company of Bohai Oil Corp of CNOOC, Tanggu, 300452, Tianjin 
The mode of load and deformation of directional drilling string and the expression of trigonometric series of deflection equation are established by means of elastic deformation energy and of the vertical and horizont...显示全部
关键词:directional drilling  heavy-weight DRILL pile  DRILL pipe wornout HORIZONTAL vibration  natural-frequency 
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