A modal analysis using the finite element method is carried out for a crankshaft workpiece system. Six lowest order modal 'parameters have been obtained.
本文用有限元方法对曲轴工件系统进行了模态分析，求出了前六阶模态参数。
From modal analysis theory, we can easily show that only one reference is necessary in order to determine all of the modes of a system - at least from a theoretical standpoint!
根据模态分析理论，我们很容易说明为了估计一个系统的所有阶模态，只需要一个参考点—至少从理论的角度来看！
Now there is much more to it all but this is just a very simple explanation of modal analysis.
然而模态分析的内容还有很多，这只是一个非常简单的解释。
The test modal analysis is an effective means to identify the intrinsic attribute of a mechanical structure.
试验模态分析是识别机械结构系统固有特性的一种常用、有效的现代技术。
Based on modal analysis to piezoelectric smart laminated plates, a finite inverse algorithm of the time history about impact loads by piezoelectric modal respondence is presented.
基于对智能层合板结构的模态分析，提出由结构的压电模态响应反演瞬态荷载时间历程的有限元方法。
Modal analysis is used to determine the vibration characteristic of a structure and its components, including the natural frequencies and vibration modes of the structure.
模态分析用于确定设计中的结构及其部件的振动特性，包括结构的固有频率和振型。
Chapter II: After a thorough analysis of the verbs in Guan Hanqing's dramas, I divide verbs into four categories, namely, verbs of action, verbs of relation, verbs of state and modal verbs.
第二章：在对关汉卿杂剧中的动词进行了穷尽的分析之后，将动词分为四类，即：动作动词、关系动词、性态动词、情态动词。
Using the synthetic method of both finite element and modal analysis searches after a basic way of dynamic Safety design.
采用有限元数值模型与实验模态分析相结合的方法，寻求动力安全设计的基本方法。
Finally, Based the analysis of theory modal, a modal testing program has been designed according to the existing test equipments, which prepares for the next testing of the vibration and noise.
在理论模态分析的基础上，根据现有的试验设备设计了合理的试验方案，为下步的振动与噪声的试验做了必要的理论准备。
A modal value analysis method is presented to obtain a reduced-order dynamic model with modal coordinates for structures with small damping or without damping.
针对小阻尼和无阻尼结构，提出了一种模态价值分析方法，用于在模态坐标下的动力学模型降阶问题。
A local exciting method was used to obtain the high-order modes information on a reinforced concrete frame model by the experimental modal analysis method.
采用局部激振方法对一个钢筋混凝土框架结构模型施加激励，通过实验模态分析获取高阶局部模态信息。
Vibration modal analysis technology and neural network technology is a effective instrument to solve damage diagnose.
振动模态分析技术和神经网络技术是解决结构损伤诊断问题的有效工具。
The finite element model of body-in-white of a SRV is established. The implicit frequency and vibration types are obtained by modal analysis.
建立了某运动休闲车(SRV)白车身的有限元模型并进行了模态分析，得到了SRV白车身的固有频率和振型。
A microcomputer system developed for automotive experimental modal analysis is presented in this paper.
本文介绍了自行开发的适用于汽车工程的实验模态分析微机系统。
Based on the modal analysis of piezoelectric laminated plates, a FEM based inverse algorithm is presented for the time history of impact loads by piezoelectric modal response.
基于对智能层合板结构的模态分析，提出由结构的压电模态响应反演瞬态荷载时间历程的有限元方法。
In this paper, a structural-acoustic model of a model tractor cab for finite element analysis was established, and the acoustic modal and the coupled structural-acoustic modal were analyzed.
该文以一拖拉机驾驶室模型为研究对象，建立了其声振耦合的有限元分析模型，计算了该驾驶室模型的声学模态和声振耦合模态。
A test modal analysis of the damage about the shaft structure components is analyzed by the pulse-excitation method.
利用脉冲激励法对轴结构件损伤状况进行了试验模态分析。
Based on modal analysis of piezoelectric smart laminated plates a finite element inverse algorithm for identifying the time history of impact loads from piezoelectric modal responses is presented.
基于对智能层合板结构的模态分析，提出由结构的压电模态响应反演瞬态荷载时间历程的有限元方法。
First, using second constrain, the static state and dynamic analysis applied to the frame of a few thickness plates with FEM modal analysis, distortion, stress, vibration and frequency were gained.
首先在第二种约束方式下，利用有限元模态分析方法对几种不同板厚的机架进行了动、静态分析，得到了机架变形、应力及各阶振型与频率。
This paper has two works:Firstly, based on curvature modal analysis of structure, it attained a new conception: differences of curvature modal.
第一，在对结构曲率模态分析的基础上，提出了一个新的概念：曲率模态差。
Based on the theory of modal superposition and power series expansion, a modal superposition method for the sensitivity analysis of FRF is proposed in this paper.
基于模态展开和幂级数展开原理，提出了一种频响函数灵敏度分析的模态展开法。
Furthermore, we also provide a method for critical nodes selection based on modal analysis, which aims at reducing the huge dimension of injection space.
基于模态分析，提出了选择系统关键节点的方法，以实现注入空间的有效降维。
ANSYS is used to make the modal analysis of a plane truss structure model, then APDL is used to compile procedures to calculate flexibility difference curvature.
作者利用ANSYS有限元分析软件对一个平面桁架模型进行了模态分析，并用APDL语言编制程序计算该结构的柔度差值曲率。
A complete set of calculating methods for complex modal analysis of nonlinear random response of structures with multi-degrees of freedom and base isolation are proposed.
从而建立了多自由度隔震结构非线性随机响应复模态分析的一整套计算方法。
CAE is conducted on main parts of a mining truck brake, which includes structural static analysis, non-linear contact analysis, modal analysis and transient dynamic analysis.
对矿用汽车制动器主要部件进行了计算机辅助工程分析(CAE)，包括：结构静力学分析、非线性接触分析、模态分析、瞬态动力学分析等。
Now there is much more to it all but this is just a very simple explanation of modal analysis.
然而模态分析的内容很多，这只是一个非常简单的解释。
In view of the locally severe vibration of a 125 motorcycle, the paper makes a structure modal analysis with ANSYS to get the natural frequency and the vibration mode of the frame.
针对某125摩托车局部振动比较严重，采用有限元分析软件ANSYS，对该款车架进行了结构模态分析，得到车架固有频率和振型。
Modal analysis is a very effective method for the study of vibration characteristic of impeller blade.
对叶轮叶片振动特性进行研究，模态分析是一种十分有效的方法。
Modal analysis is a very effective method for the study of vibration characteristic of impeller blade.
对叶轮叶片振动特性进行研究，模态分析是一种十分有效的方法。
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