机械导纳

本文基于它的作用机理和机械导纳与弹性结构动力学理论，推导了三种不同BBD板结构振动功率流的解析表达式。

Based on its characteristics , mechanical mobility and structural dynamics , some analytical formulae for three different plate assemblies with BBD are derived .

机械导纳法分析桩的纵向振动

Mechanical Mobility Method for Analysing the Longitudinal Vibration of the Pile

分支轴系弯曲振动的机械导纳综合分析法

The Mechanical Mobility Synthetic Method for Analyzing the Bending Vibration of Branching Shafting

立姿无依托连发武器枪&肩系统机械导纳测量与分析

Mechanical Admittance Measurement and Analysis of Gun-Shoulder System of Standing Non-rest Automatic Weapon

测定颤振导数的机械导纳法

The measurement of flutter derivatives using mechanical admittance

根据机械导纳法，通过锤击激振进行钢轨实验模态分析，结果与有限元分析结果基本一致。

The result of experiment model analysis based on mechanical admittance method is coincident to the ANSYS results .

在用机械导纳法检测复合地基的工程性状中，准确判定桩身质量、缺陷位置和性状是动测的重要内容。

The estimation of the pile , the location of the defect and the situation of the defect are the important content in the dynamic tests of composite foundation .

将转子分为若干段，化成由若干个子系统组成的振动系统，推导出了子系统机械导纳合成的计算公式，根据这些公式即可对子系统进行综合，求出振动系统总的机械导纳。

A rotor is modelled as a vibratory system with many subsystems in this paper . The formulations for synthesizing the mechanical mobilities of the subsystems are given here .

本文从实际结构的机械导纳测试出发，探讨了多向交又导纳在板壳箱体模态参数识别中的应用，并详细论述了模态试验/分析中提高信号测量和参数识别精度的几个问题。

From practical measurements of structural admittance , multi-directional cross-admittance applied in modal parameter identification of plate or shell cases is discussed in this paper , which describes in detail a few problems connected with improving accuracy about signal measurement and parameter identification in modal test analysis .

本文应用动态子结构方法，在分别获得各子结构的机械阻抗（导纳）基础上，按模态分析理论建立起锭子结构系统的机械导纳公式。

On the paper , on the basis of obtaining separately the mechanical impedance ( receptances ) of all the substructures by using the dynamic substructure method , we estabished the formulae of modal analysis .

机械系统中响应速度与激励力之比称为机械导纳即速度导纳。速度导纳对于分析系统特性十分重要。

Mechanical admittance can be defined as the response speed upon the exciting force or voltage of a system .