1) free-to-decay vibration
自由振动法
1.
In the process of aerodynamic derivatives\' identification for bridge sections based on free-to-decay vibration wind tunnel test,a LSCE method is introduced,which identifies aerodynamic derivatives integrally without iterations or initial values needed.
在节段模型自由振动法识别桥梁气动导数风洞试验中,采用LSCE识别方法,无需迭代和设定初始值而实现整体识别。
2) free vibration attenuation method
自由振动衰减法
3) free vibration
自由振动
1.
Interval analysis for free vibration of composite laminated beams;
复合材料层合梁自由振动的区间分析
2.
The free vibration of the circular plate for the piezoelectric-piezomagneto and elastic media;
压电、压磁耦合弹性介质圆板的自由振动
3.
Transverse free vibration of asymmetrically supported composite beams with embedded SMA wires and subjected to thermal load;
热载荷作用下非对称支承嵌入SMA丝复合材料弹性梁的横向自由振动
4) free vibrations
自由振动
1.
Analysis of free vibrations of rectangular plates by barycentric rational interpolation collocation method
重心有理插值配点法分析矩形板自由振动
2.
The free vibrations of the system were disposed as one-demension problems,a semi-analytical method was presented to analyze the free vibrations of the systems,and the free vibration frequencies were obtained by Galerkin method.
基于Bernoulli方程,通过对弹性体与流场耦合作用机理的分析,建立了弹性底板矩形贮箱流固耦合系统的自由振动方程。
3.
Based on Flugge shell theory, the equations of free vibrations of a orthotropic circular cylindrical shell under hydrostatic pressure are obtained.
本文对静水压力作用下正交各向异性圆柱壳的自由振动特性进行了分析。
5) vibration
[英][vaɪ'breɪʃn] [美][vaɪ'breʃən]
自由振动
1.
The aim of the present research is to investigate the free vibration features of the ring-stiffened cylindrical shell filled with fluid or empty.
分析中空和充液加肋圆柱壳的自由振动特性 ,基于Love壳体理论 ,列出了中空圆柱壳和考虑充液耦合下的振动微分方程 ,对于两端简支的边界条件 ,推导出关于中空和充液圆柱壳的频率的特征方程。
2.
An analytical numerical study was presented for the bending and vibration of RC cantilever plates strengthened with fiber\|reinforced polymer(FRP) strips.
基于 Reissner- Mindlin一阶剪切变形板理论 ,讨论了钢筋混凝土悬臂板在纤维增强复合材料补强情况下的弯曲及自由振动问题 。
3.
Frequencies of the simple propping square plate in vibration by using defletion of the static force were determined,and the frequencies formula for the simple propping square plate in vibration for dispersed and consecutive system were obtained.
利用静力挠度很方便地确定了简支方板作自由振动时的频率。
补充资料：自由振动
| 自由振动 free vibration 系统受初扰动后不再受外界激励时所作的振动。例如单自由度的弹簧振子，其振子质量为m，弹簧的刚度为k，且阻尼可以忽略，则其振动微分方程为mx+kx＝0。其解为x＝Asin(ωnt+j)，式中x为位移；t为时间；  为角频率，它与初始条件无关而取决于系统的参数，也称固有频率 ；A、j分别为振幅和初相位，由振子的初位移x0和初速度 确定： ；j＝arctg(ωnx0／ )( ≥0)，j＝π+arctg(ωnx0／ )( ＜0)。单自由度系统的无阻尼自由振动是简谐运动，其周期T 和频率f为：T＝1/ f=2π 。在无阻尼自由振动的过程中，系统的动能和势能不断地相互转换，且机械能守恒；其振幅决定于系统在起振的时候所具有的能量，且大小保持不变。有阻尼的自由振动参见衰减振动。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条