English translation for "modal frequency"
|
- 模态频率
众数频率
Related Translations:
modal: adj.1.方式上的，形态上的；【哲学】(对本质、内容说的)形式(上)的。2.【语法】语气 (mood) 的;表示情态 (manner) 的。3.【逻辑学】程式的；【音乐】调式的；【法律】规定执行[应用]方式的；【统计】众数的。短语和例子a modal legacy 指定用途的遗产。 modal auxiliary 情态助动词 (can, may, might, must,
- Example Sentences:
| 1. | Modal frequency and vibration response of the gear box are computed by structural fem with a 3 - d fe model
建立齿轮箱三维有限元模型，采用结构有限元法计算齿轮箱模态频率和振动响应。 | | 2. | The modal parameter identification using natural excitation technique and eigensystem realization algorithm are studied . reasonable results are identified . by introducing statistics to dispose the modal frequency of the structure , the preciseness and precision of the identified system mode are improved
研究了利用环境荷载激励技术和特征系统实现算法进行模态参数识别，引入统计方法对模态频率进行统计平均处理，提高了系统模态识别的准确性和识别精度。 | | 3. | In chapter 3 , the non - linear equation was linearized with the jacobi matrix , and then the linearized equation was transformed into fixed frame to analyze the stability problem with eigenvalue method ( on - ground or hovering ) or floquet theory ( forward flight ) . meanwhile , the equation was perturbed by sweep frequency excitation from steady state to get transit decay of lag response which was then transformed into fixed frame with a numerical fourier coordination transformation ( fct ) . the fixed frame response along with the body response was analyzed via an fft to determine modal frequencies
然后,在稳态响应的基础上利用雅各比矩阵对非线性方程进行了线化,线化后的方程利用多桨叶坐标变换转换到固定系下后,利用直接特征值分析(地面、悬停)或floquet理论(前飞)对系统进行了稳定性分析;同时,对系统进行了瞬态响应分析;在系统达到稳态的基础上进行扫频激励,用fft变换求得系统频率,进而用移动矩形窗方法分析得到系统的阻尼。 | | 4. | Based on structural dynamics , different damage diagnosis index , such as modal frequency variety , modal assurance criterion , co - ordinate modal assurance criterion , modal strain energy , remains force vector , modal strain , rigidity change , flexibility matrix , modal curvature and so on , are studied in this thesis
基于结构动力学理论,本文论述多种损伤识别指标的基本原理和计算方法,主要包括:固有频率变化率、模态置信因子、改进的模态置信因子、模态应变能、残余力向量、应变模态、刚度变化、柔度矩阵、曲率模态等。 | | 5. | Based on the mode analysis of the stator of a ultrasonic motor using in - plane bending vibration , three kinds of in - plane vibration modes are obtained , and the influence of the motors structural parameters on its modal frequencies are discussed . some helpful conclusions are given , which provide theoretical basis for the design of this type of motor
运用有限元方法对利用平面内弯曲模态超声电机定子进行了模态分析，获得了三种不同类型的面内振动模态，并讨论了电机结构参数对其模态频率的影响，在此基础上得到了一些有益的结论，为利用平面内旋转模态设计超声电机定子提供了理论依据。 | | 6. | Secondly , two carbon fiber reinforced composite beams were fabricated , and their modal frequencies were measured by an experiment method . thirdly , delaminations were modeled by pairs of nodes with the same coordinates but different node numbers , while the modal frequencies of these beams with different delamination location and size were computed by an eas piezoelectric solid element . moreover , a novel method combining computational mechanics and neural network was demonstrated for composite health monitoring ; the first five flexure modal frequencies obtained by fem were modified by a primary revising approach and were used to train the neural network
本文较全面地评述了神经网络的应用模型、改进算法等，编制了bp神经网络程序：制备了纤维增强复合材料试件，并进行实验模态分析；利用坐标相同、节点号不同的方法模拟脱层损伤，基于eas列式的压电固体单元计算了不同脱层损伤情况下的频率信息；针对基于实验数据训练神经网络存在样本不足的缺陷，本文提出了利用有限元方法对含有脱层损伤的复合材料试件进行数值模拟，以前五阶弯曲模态频率构建训练样本的新思路，并提出了一种初步的计算值修正方法，以此构建神经网络的训练样本：将实验模态分析的结果送入训练好的神经网络进行预测，实现了对复合材料梁的脱层损伤的定位和损伤程度的评估。 | | 7. | The preceding five steps modal frequencies and the corresponding vibration modals of the main frame are calculated . by means of the comparison basic frequency with the other vilration sources and the analysis of each other step vibration modes , the structure is proved to be safe this dissertation studied the important mechanism of the roadheader
求出其5阶固有频率和振型，将固有频率与振源频率比较，并对各阶振型进行动态观察与分析，得出了其在正常工作时不会发生共振的结论。 | | 8. | 2 a modification approach of the dynamic model of cable - damper system is proposed . the approach is employed to modify parameters of cable - damper modal using cable system ' s first a few of modal frequencies which is obtained by field test . results show that analytical frequencies of modified cable model are close to field test ' s one with very small errors
2 、提出了一种拉索动力模型修正方法，该方法利用实测的拉索系统前几阶模态频率，修正拉索模型参数，修正后的拉索计算模型得到的模态频率与实测值非常接近。 | | 9. | Base on review of existed study and application in suppressing cable vibration in the world , technique of mitigating cable vibration with viscous damper and mr damper has been investigated in this dissertation , and the main contents and progresses in form of summary are as following : 1 the motion differential equations of the cable - damper system are formatted , which take into account these factors , such as the inclined angle , sag , stiffness etc . coupling motion between cable and deck is studied with analytical and numerical method . numerical results show that large amplitude vibration of cable with beat rhythm will occur when exciting frequency of deck equals two times modal frequency of cable
本文在对国内外斜拉索振动控制研究与应用现状进行综合评述、分析的基础上，针对上述问题进行了深入研究，具体的研究内容和取得的成果包括： 1 、建立了斜拉索-阻尼器系统运动方程，对拉索与桥面的耦合振动作了分析和研究，数值结果显示当桥面激振频率等于某阶拉索模态频率的两倍时，很小的初始扰动将引起拉索的大幅振动，并呈现拍振的特征，与实测的拍振信号一致。 | | 10. | Abstract : based on the mode analysis of the stator of a ultrasonic motor using in - plane bending vibration , three kinds of in - plane vibration modes are obtained , and the influence of the motor ' s structural parameters on its modal frequencies are discussed . some helpful conclusions are given , which provide theoretical basis for the design of this type of motor
文摘:运用有限元方法对利用平面内弯曲模态超声电机定子进行了模态分析，获得了三种不同类型的面内振动模态，并讨论了电机结构参数对其模态频率的影响，在此基础上得到了一些有益的结论，为利用平面内旋转模态设计超声电机定子提供了理论依据。 |
- Similar Words：
- "modal energy" English translation, "modal energy intensity" English translation, "modal expansion" English translation, "modal fiber" English translation, "modal fibre" English translation, "modal group" English translation, "modal impedance" English translation, "modal length" English translation, "modal logic" English translation, "modal logic and provability" English translation
|
|
|
