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a random vibration
相关语句
  随机振动
     Computation of Stress Power Density Spectra of Components in a Random Vibration System
     随机振动系统构件应力谱密度的计算
短句来源
     The stress distributions of two wave-front correctors in a random vibration environment are analyzed by finite element method and the results show that the undergoing stress is within the allowable range of the material.
     采用有限元方法分析两种波前校正器在随机振动环境中的应力分布,结果表明所受应力均小于其材料的许用应力,器件结构未受破坏。
短句来源
     Then a random vibration test for the device is carried out.
     随后对器件进行随机振动试验。
短句来源
     Here the composition of the developed virtual instrument system of processing a random vibration signal is introduced.
     简介了研制的随机振动信号处理虚拟仪器系统的组成。
短句来源
     A random vibration system model of "road-crawler type vehicle-operator" is needed for the analysis of dynamic characteristics of new type viscoelastic crawler construction machinery.
     为对新型粘弹性履带式工程机械的动态特性进行分析,需建立“路面—履带式车辆—驾驶员”随机振动系统模型。
短句来源
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  “a random vibration”译为未确定词的双语例句
     The statistic characters, analytic method and traditional experiment of a random vibration were introduced firstly.
     作者首先对随机振动的统计特性、分析方法和控制实验作了简单介绍。
短句来源
     Based on the method, a computer program is developed and a random vibration analysis is performed for a double layer spherical lattice shell under 3 dimensional seismic excitations, from which some main conclusions are obtained.
     在此基础上 ,对一双层球面网壳在多维地震作用下的随机响应进行了分析 ,给出了主要结论
短句来源
     A random vibration analysis model of arch dam-foundation interaction, which couples the psudo-excitation algorithm and FE-BE-IBE time domain procedure, is presented. It can calculate effect of the correlation of the ground motion components on the seismic response of arch dams conveniently. To verify the accuracy of the presented model, Monte Carlo method is employed to calculate the seismic responses of an arch dam.
     本文将随机振动的虚拟激励法与拱坝-地基动力相互作用FE BE IBE时域模型结合,发展了一个可以考虑多维随机地震动作用下的拱坝动力响应计算模型,并用MonteCarlo方法对模型进行了验证。
短句来源
     A random vibration analysis model of arch dam-foundation interaction was developed by combination of the pseudo-excitation algorithm with FE-BE-IBE time domain procedure. The effects of traveling waves on random seismic responses of arch dams can be conveniently included. To verify the accuracy of the presented model, the Monte-Carlo method was employed to calculate the seismic responses of a concrete arch dam model.
     将随机振动的虚拟激励法与拱坝地基动力相互作用FE-BE-IBE时域模型结合,发展了一个可以考虑随机地震动行波效应的拱坝随机动力响应计算模型,并用Monte-Carlo法对模型进行了验证.
短句来源
     A random vibration analysis model of arch dam – foundation interaction, which couples the pseudo-excitation algorithm and FE-BE-IBE time domain procedure, is presented. It can conveniently include the effects of arbitrary coherency on the seismic responses of arch dams. To verify the accuracy of the proposed model, Monte Carlo method is employed to calculate the seismic responses of an arch dam.
     将随机振动的虚拟激励法与拱坝-地基动力相互作用FE-BE-IBE时域模型结合,发展了一个可以考虑地震动部分相干效应的拱坝随机动力响应计算模型,并用Monte-Carlo方法对模型进行了验证。
短句来源
  相似匹配句对
     A Study on Nonstationary Random Vibration of Vehicle
     汽车非平稳随机振动的研究
短句来源
     A Structure Identification Method for Random Vibration
     一种随机振动模型结构辨识方法
短句来源
     ON RANDOM
     论随机性
短句来源
     VIBRATION SCRAPE
     振动刮研法
     Random Sampling
     随机抽样
短句来源
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  a random vibration
The turbulent airflow, however, forces the wing to undergo a random vibration response.
      
The base element is now connected to the ground by a motion constraint that imposes a random vibration.
      
To carry out a random vibration analysis of the structure, it is necessary to construct first a stochastic model of the road profile.
      
Suppose that a random vibration time history has a total duration of 60 seconds.
      
Statistics of a Random Vibration Sample A sample random vibration time history is shown in Figure 2.
      
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In this paper, a random vibration measuring of an EQ141 model enginee-

本文以EQ141型工程车行驶平顺性的测试、数据处理为例,比较详细地讨论了频谱分析的方法,包括主频率识别,部分系统参数的确定等。关于随机振动理论在汽车平顺性测试中的应用也作了简要介绍。最后对该试验车行驶平顺性作出评价,对该车悬架系统和座椅参数提出了改进意见。

Improved design floor spectra have to include the interaction between buildings and equipment. The interaction is significant when the mass ratio of equipment to building floor is not very small and equipment natural periods are close to those of buildings, i.e., tuning. In the case of tuning, equipment damping different from structural damping(nonclassical damping) has effects that can not be analyzed by methods dealing with classical damping. In addition, the psuedo static effects of multiply supported excitation...

Improved design floor spectra have to include the interaction between buildings and equipment. The interaction is significant when the mass ratio of equipment to building floor is not very small and equipment natural periods are close to those of buildings, i.e., tuning. In the case of tuning, equipment damping different from structural damping(nonclassical damping) has effects that can not be analyzed by methods dealing with classical damping. In addition, the psuedo static effects of multiply supported excitation are also significant. Considering these effects, the paper develops a random vibration based floor spectrum analysis program FSAP. More than 600 floor spectra for 6 different and typical buildings are generated by it. On the basis of them, the design floor spectra for single supported secondary systems are developed.

第一代楼面谱将设备与结构解耦,大大方便了设备抗震设计。但因未考虑设备的反作用,所得楼面谱误差过大。文中讨论第二代楼面谱,考虑设备对楼层的质量比不很小时,设备的反作用不可忽视,特别是当设备频率与结构相近(调谐)时影响显著。而且设备阻尼一般不同于结构阻尼,调谐时非经典阻尼的影响明显不同于经典阻尼。用随机振动法建立了由地面反应谱计算设备反应的程序,并针对6座典型高层建筑计算了600余条楼面谱,从中给出了设计用楼面谱

Satellite dynamics environment is a test that must be undergone by a wave-front corrector used for space optical system and random vibration environment is an important factor among them. The stress distributions of two wave-front correctors in a random vibration environment are analyzed by finite element method and the results show that the undergoing stress is within the allowable range of the material. Then a random vibration test for the device is carried out. After testing the main performances...

Satellite dynamics environment is a test that must be undergone by a wave-front corrector used for space optical system and random vibration environment is an important factor among them. The stress distributions of two wave-front correctors in a random vibration environment are analyzed by finite element method and the results show that the undergoing stress is within the allowable range of the material. Then a random vibration test for the device is carried out. After testing the main performances of the device are not affected and acceptable stress of the device is 6g RMS.

波前校正器应用于空间光学系统必然要经历卫星动力学环境,随机振动环境是其中一个很重要的影响因素。采用有限元方法分析两种波前校正器在随机振动环境中的应力分布,结果表明所受应力均小于其材料的许用应力,器件结构未受破坏。随后对器件进行随机振动试验。试验后器件的几种主要性能均未受到影响,说明器件可承受均方根为6g的随机振动环境。

 
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