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theory of random vibration
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  随机振动理论
     Based on the theory of vehicle/track coupling dynamics and the theory of random vibration , the vehicle vertical random responses with the traditional vehicle model and with the vehicle/track coupling model are investigated and compared.
     基于车辆轨道耦合动力学原理,运用随机振动理论进行了轮轨系统中传统车辆模型与车辆轨道耦合模型的垂向随机振动响应比较分析。
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     In this paper, the vertical dynamic response of railway vehicles with two axles bogies to random irregular excitation of track is studied with the theory of random vibration and electronic computer.
     本文应用随机振动理论,以电子计算机求解方法来研究两轴转向架式车辆对于轨道随机不平顺激扰而引起的垂向动态响应。
短句来源
     The random response analysis method developed by combining the theory of random vibration and the finite element method is widely adequate for the response analysis of engineering structures subjected to multiple-force or multiple-displacement excitation.
     随机振动理论与有限元方法相结合而产生的随机响应分析方法,广泛适用于工程结构在受到多个随机力激励或随机运动激励时的响应分析。
短句来源
     This paper presents the analytical formulas of random responses of systems with finite free degrees under multisupport interference by applying the theory of random vibration and space-interrelated ground motion model.
     本文应用随机振动理论和地面运动的空间相关模型,给出了有限自由度体系多支承干扰的随机反应分析公式。
短句来源
     Using the theory of random vibration,the problem of dynamic response of the non homogeneous soil layer to earthquake is studied in the present paper.
     利用随机振动理论,本文研究了非均匀土层对地震的动力反应问题。
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  “theory of random vibration”译为未确定词的双语例句
     Author, using the basic theory of random vibration, has obtained a right expression by attentive derivation and the same result with TSO 8608 and GB 7031—86. This paves the way for establishing an equation to calculating road pavement spectrum measurement by fifth wheel.
     笔者运用随机振动基础理论,经过仔细推导得出正确的表达式,与TSO8608及GB7031—86取得一致的结果。 从而为第五轮测量路面谱计算公式的建立铺平了道路。
短句来源
     The probability density function of partial strain loading of product is defined in accordance with the relevant theory of random vibration test.
     根据随机振动试验的有关理论 ,确定产品局部应变载荷的概率密度函数。
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     Base on the theory of random vibration and the calculating principle and method for the Passive Tuned Mass Damper (TMD), which was taken to control buffeting at the construction stage, the paper explains the design method of TMD and the formula use to control buffeting responses of bridge pylon was deduced.
     根据随机振动原理和被动调质阻尼器(TMD)对结构的减振原理,本文简单阐述了TMD的设计方法,并推导出了用于桥塔风振控制计算的公式。
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     Firstly, according to the complex mode analysis theory of random vibration, high-rise structures are discretized to multiple degrees of freedom system. The formulas are attained, which are employed to calculate the response of the structure-MTMD subjected to pulsating wind load.
     首先,本文采用随机振动的复模态理论,将高耸结构离散成多自由度体系,推导了在脉动风荷载作用下的结构—MTMD系统的风振响应计算公式。
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     Based on the theory of random vibration, the stochastic earthquake response and dynamic reliability of shield tunnel are studied by using the method of probability analysis in this thesis.
     最后采用概率的分析方法,研究了盾构隧道在中心化平稳随机地震动模型下的随机地震响应及其动力可靠度,为工程抗震设计提供了合理的依据。
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     theory.
     这些概念和理论为不确定性信息理论奠定了基础.
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     The theory and the (?)
     这个理论本身和社会实践均有一个不断发展的过程。
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     Theory of Meaning
     意义理论
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     THEORY OF CONSTRAINTS
     约束理论
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     ON RANDOM
     论随机性
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  theory of random vibration
The random reaction force on the structure can be determined through the theory of random vibration.
      


This paper deals with the basic principles of the vibration and shock isolation in accordance with the basic theory. Three aspects are considered here: 1. The isolation theory of such periodic vibrations as: 1) Single-degree-of-freedom system; 2) Uncoupled two-degree-of-freedom system; 3) Coupled two-degree-of-freedom system; 4) Multi-degree-of-freedom system; 5) High frequency excitation system; 6) Non-rigid structure system. 2. Theory of random vibration isolation. 3. Theory of...

This paper deals with the basic principles of the vibration and shock isolation in accordance with the basic theory. Three aspects are considered here: 1. The isolation theory of such periodic vibrations as: 1) Single-degree-of-freedom system; 2) Uncoupled two-degree-of-freedom system; 3) Coupled two-degree-of-freedom system; 4) Multi-degree-of-freedom system; 5) High frequency excitation system; 6) Non-rigid structure system. 2. Theory of random vibration isolation. 3. Theory of shock isolation. The theory involved here has been partly proved by the vibration test of multi-degree-of-freedom system. In the last part of the paper, are discussed the principles for selection and design of the shock and vibration isolators.

本文从基本理论出发分析了电子设备振动与冲击隔离的基本原理:1.周期性振动:(1)单自由度系统,(2)非耦合二自由度系统,(3)耦合二自由度系统,(4)多自由度系统,(5)高频激励系统,(6)挠性结构系统等的振动隔离原理;2.随机振动的隔离原理;3.冲击隔离原理。通过多自由度系统的振动试验基本验证了上面有关的理论。最后提出振动与冲击隔离器的选用与设计原则。

The evaluation of the gust-loading factor is very important to the design of structures subjected to lateral pressure from fluctuating wind. In the determination of the peak factor of fluctuating wind pressure, references or codes of U. S. S. R, Canada and France usually take approximations conerning the distributions of fluctuating wind pressure and of mass along the height of the structure. Another assumption made is that the wind pressure along the horizontal length of the structure is constant. Thus only...

The evaluation of the gust-loading factor is very important to the design of structures subjected to lateral pressure from fluctuating wind. In the determination of the peak factor of fluctuating wind pressure, references or codes of U. S. S. R, Canada and France usually take approximations conerning the distributions of fluctuating wind pressure and of mass along the height of the structure. Another assumption made is that the wind pressure along the horizontal length of the structure is constant. Thus only approximate values can be obtained. This paper takes into account of the change of the gust pressure both along the height and the length of the structure, makes use of the theory of random vibration for resolution into natural modes of free vibration of systems with infinite or finite degrees of freedom, and derives a formula for the determination of the gust-loading factor. Furthermore, on the basis of experimental data from some typical districts in China and in some other countries, numerical values of gust factors have been calculated. Simplified formula's and equivalent formulas for gust factors of structures having uniform stiffness and mass along the height have also been given. The author has also prepared tables for design purposes and for reference in case of revision of the code on design loading.

在脉动风压下结构的风振系数是结构物特别是高耸结构物在抗风计算中的重要问题。苏联、加拿大、法国等国文献或规范[1][2][4][8]等在确定脉动风压的动力系数时,未能完整考虑沿结构高度脉动风压和结构质量分布的影响,并且常作了沿水平长度风压是不变的假定,求出了风振系数,因此有了一定的偏差存在。本文按无限或有限自由度体系,根据随机振动理论,按振型分解的方法,考虑风压沿高度和长度的变化规律,求出了风振系数。根据国内外风压实测资料,求出了风振系数中有关数据。对于沿着高度其刚度和质量都比较均匀的建筑物,提出了简化公式和折算公式。有关数据已制表格,可供应用和荷载规范修订时参考。

Various control criteria in the suspension system of the vehicle can be established according to the theory of random vibration. In this paper the description is started with optimization of mathematical model of suspension system. The suspension parameters are optimized by use of the multiobjective decision methods with results obtained from electronic computer. A brief discussion is made at the end of this paper.

根据随机振动理论,车辆悬挂装置可以建立几个不同的控制标准,本文从悬挂装置优化的数学模型入手,利用多目标决策的一些方法,对悬挂参数进行了优选,在电子计算机上得到了结果。文末进行了简要的讨论。

 
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