| 1. | Flexural principl mode
挠曲主振型 |
| 2. | At last , the force vibration of the model is discussed by the method of principal mode superposition
用主振型迭加法简单讨论了弹性支承交叉梁系的强迫振动。 |
| 3. | The vibration modal in ultrasonic frequency band is extracted and the natural frequency of work modal is determined through analyzing the characteristics of principal mode
通过分析各阶主振型的特点来确定电机工作模态的因有频率。 |
| 4. | Compared with classic methods , the method presented in this paper has its advantages and can be regarded as a theoretical complement
同经典方法相比，本文方法有自己的优点，只需某一阶振动频率及其主振型即可直接求解杆件边界条件，可作为一种理论上的丰富。 |
| 5. | Three kinds of control algorithms were used in this numerical simulation : the symbol control law , the first mode control law and the main mode control law
Kobori提出的符号控制律和在符号控制律的基础上引申出的振型控制律(包括第一振型控制律和主振型控制律)对半主动控制装置进行实时控制。 |
| 6. | The 1st to 12th vibration modes and periods which influence greatly on the truss are listed to investigate the distributions of the truss mass and stiffness
在对该结构体系进行模态分析后，提取对结构有影响的前12阶模态，列出每一阶模态的自振周期及主振型，用于考察结构的质量分布和结构刚度。 |
| 7. | In order to use transverse vibration frequence and modal shape to identify beam boundary conditions , this paper presents five formulas by using the modified theorem of reciprocal works
摘要基于修正的功的互等原理，利用杆件横向振动频率及主振型反算杆件边界条件推导出了5个计算公式，并进行了数值计算。 |
| 8. | And simulation analyses were carried out to examine the influence of the parameters of the controlled structures and the controllers on the control effectiveness of the system . the simulation results show that the different control laws ca n bring on the different control effectiveness
在隔震体系中，第一振型控制律和主振型控制律所产生的减振效果是相同的，因为隔震体系的第一振型就是主振型。 |
| 9. | Based on vibration theories and the analysis of the model , using main vibration shape and the natural frequency , defined the concept of parameter sensitivity , and got its formula . based on this foundation , defined the concept of the appraisement coefficient of adjustment automobile rigidity parameter , and give the calculation equation
根据振动理论，在模态分析的基础上，通过利用主振型向量的正交性，导出参数灵敏度的概念，推导了参数灵敏度的公式。在此基础上，提出了调整汽车刚度参数的评价系数，并给出了评价系数的计算公式。 |
| 10. | Speaking in detail , for every specimen , we study the for of the cracking load , yield load and failure load ; the ductility property ; the property of hystersis curvs and keleton - frame curves ; the degree of initial stiffess and stiffness degadation . secondly , the two different suo nlgn use ltslaences ， wmcn are ootll shear wsll sttllctlllt ， are tab6n as instanop the shear ’ wsi is oin 卜 hot8qopo inww 田 l ！ s ot 以 j 口 willo 地 劝 忧 地 epo o odod sqo8qopt solidndls ofr c l w means or0 卜 0nm elemem ana 吹 lsptwtodd ’ mlmwe m 加 柏 mm are d an 邑 以 胡 a ann compcomparen in severm es 叮 wsllcll as scu 一 阳 i 朗 l p 一 ndnd mdede so ess d laterm seimic e anu so on ’ inatty ， tiep 训 颁 oility of hollow shear wal of rc in d suo ra use reslaences s ant l
首先研究在低周反复水平加载试验下试验对象的强度、变形和能量的特性：开裂荷载、屈服荷载、破坏荷载；各试件的滞回曲线和骨架曲线；延性情况；初始刚度和刚度退化等参数：进而用satwe有限元程序分析对比了某一小高层剪力墙结构在采用空心剪力墙板和采用普通实心剪力墙作为墙体的结构受力异同点，在质量、主振型、刚度、水平地震效应等方面做了对比。 |
