采用梁、板线性有限元数学模型计算了结构自振特性和地震响应。
Structural free vibration characterization and seismic response were calculated by means of beam-plate linear mathematical model of finite element method.
以船舶辅机的梁式隔振结构为对象，运用模态分析方法和自适应算法，推导并分析了梁式结构振动主动控制的基本原理和方法。
The active vibration control of the beam structure, which is used in the isolation of the ships auxiliary machines, is studied by using modal analysis method and adaptive algorithm in this paper.
利用BIC准则及残差平方和最小原则得到振梁加速度计的最佳误差模型。
The rules of BIC and minimum residual sum of squares are used to gain the optimum error model.
本文对主梁的颤振导数识别，采用与主梁颤振分析试验相同的节段模型和测量装置，以自由振动法进行试验。
This paper makes use of free vibration method, using the same model and measuring device to identify the flutter derivatives of the girder.
首先对大桥进行自振特性分析，分别采用空间四节点弹性壳单元SHELL63和空间二节点弹性梁单元BEAM 44单元进行建模。
First carry on the self libration analysis to the bridge, use spatial four nodes elastic shell element SHELL63 and spatial two nodes elastic beam element BEAM44 to model the bridge.
另外，还例举说明了钢桁架桥的改造，其设计引入了震害控制的观念，采用了桁架桥板梁隔震系统和滞后减振装置。
Then an example of retrofit techniques of steel truss bridge is introduced, in which the concept of damage control design is adopted introducing an girder floor isolation system and hysteretic damper.
分析结果表明，在大跨度悬索桥中，多模态效应和模态耦合效应对主梁的竖向和扭转位移抖振响应有显著的影响。
It is shown that the multimode and mode coupled effects on the vertical and torsional buffeting responses of the bridge deck are quite obvious.
我们用该方法计算了硅压阻式加速度传感器五阶梯硅梁固频和振型。
We calculated the natural frequencies and mode of vibration for a five stepped Si-beam of Si-piezoresistive accelerometer.
研究了适用于桥梁和连续梁结构的基于曲率模态振型的损伤识别方法。
A damage identification approach applied aptly in Bridges and continuous beams, based on the curvature mode shapes, was studied in this paper.
给出了弹性支承桥梁和车体的振动方程并通过对具有弹性支座简支梁主振动的分析，得出了梁主振型的解析公式。
The principal vibration of a simple beam with elastic supports was analyzed and the analytical formulation of normal vibration mode was derived.
结果表明梁的自振频率，荷载的行驶频率和荷载与梁质量比对梁的振动都起着重要的作用。
All results show that the beam dynamic behavior is tied up with these factors: frequency of beam, moving frequency of the load and the ratio of vehicle unit mass to beam unit mass.
将梁函数组合法应用到求解双壳系统的固有特性，得到了双壳系统有电磁刚度项时的固有频率和振型。
A combination method of the beam function is used for obtaining the natural characteristics of the double shell system.
研究结果表明，当悬臂梁压电振子处于谐振频率状态下振动时，输出电压和功率达到最大。
The results showed that the output voltage and power were maximum at the resonance frequency.
在此基础上，研究了MR阻尼器和流体阻尼器对漂浮体系铁路斜拉桥主梁侧向抖振响应的混合控制。
Based on this, hybrid control for lateral buffeting responses in decks of floating system cable-stayed bridge installed MR dampers and fluid dampers are investigated.
本文是用全息法测十字平板梁及盘—片组合件的振型和振频的实验总结。
This paper is a summing-up of the experiment in which the vibration modes and vibration frequences of a cross formed beam and disc-blade combinations are observed and measured by holography.
然后着重分析轨道梁结构参数对系统稳定性的影响和由此引发的车轨耦合振动情况，揭示出轨道梁振固有动频率对系统稳定性有重要的影响。
Then focus on the structural parameters, which also resulting system instability and the VCGV, reveal that the natural frequency of guideway and the stability of the system has important implications.
叙述了双端调谐音叉石英振梁式重力传感器的结构和工作原理。
The structure and operation principle of a double-sides tuning fork quartz vibrating beam gravity sensor was introduced.
建立有底座吸振器和两端固支梁主系统耦合的数学模型。
A mathematical model of the system composed of the vibration absorber with a base and coupled with an ends-fixed beam is established.
依据分析结果，选择氮化硅作为梁材料，采用梁膜一体结构，激励和检测方式为电热激振、电阻拾振。
Finally, Si3N4 beam and Si reflecting membrane are selected with an integrated structure, using electrothermal excitation and piezoresistive detection.
引入运算符号，导得带任意个集中质量的梁弯曲振动频率方程和振型函数新的解析表达式。
By means of a symbol of operation, the new analytical expressions of the frequency equation and the modal function of lateral vibration of a beam with lumped masses were derived.
以船舶辅机的梁式隔振结构为对象，运用模态分析方法和自适应算法，推导并分析了梁式结构振动主动控制的基本原理和方法。
This paper establishes the general recurrence steps of using difference method for the frequency equation and mode shapes of discrete multi-mass shear structures.
以船舶辅机的梁式隔振结构为对象，运用模态分析方法和自适应算法，推导并分析了梁式结构振动主动控制的基本原理和方法。
This paper establishes the general recurrence steps of using difference method for the frequency equation and mode shapes of discrete multi-mass shear structures.
应用推荐