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固有频率响应
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  “固有频率响应”译为未确定词的双语例句
     The method was a comprebensive one based on the classical Euler Bernoulli beam theory, modern modal analysis and fracture mechanics. A charactristic equation for a cracked cantilever was derived by means of method. The relationships between the natural frequency and the crack position or crack length by solving the cquation, the present results obtained are in exiellent agreement with available results.
     提出了一种应用线弹簧模型分析裂纹梁固有频率响应的新方法.该方法是建立在古典的Euler-Bernouli梁理论、现代的模态分析和断裂力学等成就基础上的综合性方法.利用该方法导出了悬臂裂纹梁振动的特征方程,求解这个方程,建立了固有频率与裂纹位置、长度间关系.本文的计算结果与现有结果基本一致.
短句来源
  相似匹配句对
     Simple Analysis for Natural Frequencies
     关于固有频率的浅析
短句来源
     Computer Simulation of Roller Shearer Inherent Frequency
     滚筒采煤机固有频率的计算机仿真
短句来源
     Frequency Response
     频率响应
短句来源
     Response time of a thermometer
     温度计的响应时间
短句来源
     the frequency response at the principal focus;
     在主焦点的频率响应
短句来源
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Using strain and piezoelectric measuring sets and random signal and vibra-tion nalysis system,the drillstring system′s natural frequency,response,dynamicpressure of drill it,power spectrum and dynamic transfer function etc.havebeen measured and analysed in rillstring model and test drill rig.Some bene-fical research results have been obtained in ransverse vibration support,rock stif-fness and dynamic rock breaking mechanism etc.and the ynamic measuringmethod of rock stiffness has been presented.This research...

Using strain and piezoelectric measuring sets and random signal and vibra-tion nalysis system,the drillstring system′s natural frequency,response,dynamicpressure of drill it,power spectrum and dynamic transfer function etc.havebeen measured and analysed in rillstring model and test drill rig.Some bene-fical research results have been obtained in ransverse vibration support,rock stif-fness and dynamic rock breaking mechanism etc.and the ynamic measuringmethod of rock stiffness has been presented.This research will provide basis ortheoretical analysis.

利用应变和压电测试系统以及随机信号和振动分析系统,在模型和试验钻机上,进行了钻柱系统的固有频率、响应、钻头的动态压力、功率谱和动态传递函数等测试分析。在横向振动支承条件,岩石的刚度以及动态碎岩机理等方面得到了一些有益的研究结果,并提出了岩石刚度动态测定法。以上研究为理论分析提供了依据。

In this paper a new method was proposed to analysis the natural frequency responses of cracked beams by using Line Spring model. The method was a comprebensive one based on the classical Euler Bernoulli beam theory, modern modal analysis and fracture mechanics. A charactristic equation for a cracked cantilever was derived by means of method. The relationships between the natural frequency and the crack position or crack length by solving the cquation, the present results obtained are in exiellent agreement...

In this paper a new method was proposed to analysis the natural frequency responses of cracked beams by using Line Spring model. The method was a comprebensive one based on the classical Euler Bernoulli beam theory, modern modal analysis and fracture mechanics. A charactristic equation for a cracked cantilever was derived by means of method. The relationships between the natural frequency and the crack position or crack length by solving the cquation, the present results obtained are in exiellent agreement with available results.

提出了一种应用线弹簧模型分析裂纹梁固有频率响应的新方法.该方法是建立在古典的Euler-Bernouli梁理论、现代的模态分析和断裂力学等成就基础上的综合性方法.利用该方法导出了悬臂裂纹梁振动的特征方程,求解这个方程,建立了固有频率与裂纹位置、长度间关系.本文的计算结果与现有结果基本一致.

Vibration damper is one of the main tools for protecting drill string from breakage,so its placement location is a technic problem of great interest in engineering.For this purpose,taking the whole drill string as the object of study and considering the rigidity of derrick and wire rope and the damping effect of mud,the mechanical model for analyzing the vibration of whole deep hole drill string is set up and the compressional vibration of drill string is analyzed and calculated by using dynamic finite element...

Vibration damper is one of the main tools for protecting drill string from breakage,so its placement location is a technic problem of great interest in engineering.For this purpose,taking the whole drill string as the object of study and considering the rigidity of derrick and wire rope and the damping effect of mud,the mechanical model for analyzing the vibration of whole deep hole drill string is set up and the compressional vibration of drill string is analyzed and calculated by using dynamic finite element method.The optimal placement location of the vibration damper is defined on the basis of the intrinsic frequency,response displacement and axial force value of drill string.Through analysis and calculation of the typical deep hole drill string used in Daqing oil field,the optimal placement location of vibration damper at the interval of 3000 4000 m is given,while the past knowledge that the optimal placement location of vibration damper is that near to the bit is corrected.It is shown by field test that the damping effect is obvious,playing an important role in reducing drill tool breaking accident.

减振器是深井钻柱防断的主要工具之一,它的安放位置是工程中极为关注的技术问题。为此选取整体钻柱为研究对象,考虑了井架、钢丝绳的刚度以及泥浆的阻尼作用,建立起深井整体钻柱振动分析力学模型,并运用动力有限元法对钻柱的纵向振动进行了分析计算,根据钻柱的固有频率、响应位移和轴力值确定出减振器的最佳安放位置。经大庆油田深井典型钻具分析计算,给出了减振器在井深3000~4000m时的最佳安放位置,对过去那种减振器放在近钻头处最佳的认识进行了比较。现场试验表明,减振效果明显,对降低钻柱的断裂事故起到了重要作用。

 
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