So, how to select modes combination is worth studying in wind response.
振型组合是风振响应分析的重要环节,SRSS振型组合方法与CQC振型组合方法的选择直接影响到风振响应分析结果的准确性及整个结构抗风设计的安全性,因此如何对振型组合方法进行合理的选取是一个值得研究的问题。
Inverse perturbation method for solving inverse vibration mode problems in structural kinetics optimization;
机械结构动力优化振型反问题求解的逆摄动方法
The paper establishes the 3D finite element model of a lathe-bed and calculates the result of vibration model analysis of it in ANSYS.
本文建立了某型立铣床床身的三维有限元模型,并利用大型有限元分析软件ANSYS进行了模态分析,得出了床身前十阶固有频率和振型。
The vibration mode and stress and strain of star wheel under the dynamic loading are given and the most load point out position of the star wheel is pointed by .
针对星轮装载机构在工作过程中存在受力不恒定的问题,对星轮机构进行动力学分析,确定了煤岩对星轮的激振力,并以直斜形星轮为例,利用Ansys软件对星轮进行模态分析和谐响应分析,得出了星轮机构在动载荷作用下的振型、应力及应变情况,分析指出了星轮受载荷最大处的位置,为研究改进星轮的设计和改善星轮的性能提供理论依据。
Research of structural damage detecting parameters based on experimental mode shapes;
基于试验模态振型的结构损伤检测参数比较
For the grinding carriage of a camshaft grinder at high speed,mode analysis theory is used to analyze its natural frequency and mode shape.
以某型高速凸轮轴磨床砂轮架为研究对象,运用模态分析理论对砂轮架的固有频率和振型进行分析。
In this paper, based on the matrix method and mobility method, the computer program was established and the critical speeds, mode shapes of spindle under three operation conditions (no bobbin, with bobbin but no cotton yarn on the bobbin, and full mass of cotton yarn on the bobbin ) were calculated by our computer program, the calculation results are given.
采用传递矩阵法及导纳法编制了计算程序 ,分别对锭子在空锭、带筒管但筒管上无纱线、带筒管且筒管上带满卷纱线三种状态下的第一阶、二阶临界转速和振型进行了分析计算。