临界转速,critical speed
1)critical speed临界转速
1.Calculatingcritical speeds of agitating shaft by FEM;有限元法求解搅拌轴临界转速
2.Calculation and analysis ofcritical speeds and mode shaps for textical spindle with special oil-film bearing;动压轴承锭子临界转速及振型的计算分析
3.Test and calculation ofcritical speeds of a rotor;转子临界转速实验与计算的对比分析
英文短句/例句
1.Calculation of Critical Speed for Aeroengine Rotor Based on ANSYS基于ANSYS的发动机转子临界转速计算
2.Critical speed calculation and mode analysis of rotor for high speed motor高速电机转子临界转速计算与振动模态分析
parison of Approximate Calculating Method for Critical Rotating Speed of Stirring Shaft搅拌轴临界转速近似计算方法的比较
4.Critical Speed Calculation of Rotor-Bearing System of Centrifugal Compressor;离心式压缩机转子—轴承系统临界转速计算
5.Calculation and Analysis on Critical Rotational Speeds of the Centrifugal Pump Rotors离心泵转子部件临界转速的分析与计算
6.The Comparative Analysis of Two Methods of Calculating the Rotor Critical Speed计算转子临界转速的两种方法及对比分析
7.Research of the Solution Method on the Critical Speed of Turbo Supercharger Rotor涡轮增压器转子临界转速的求解方法研究
8.Vibration Analysis of a Double Span Shaft with Double Rotors for Critical Speed Experiment双跨双转子轴临界转速实验装置振动分析
9.Effects of rolling-ball diameter of ceramic bearing on rotor critical speeds陶瓷轴承滚珠直径对转子临界转速的影响
10.Critical speed calculation of turbocharger rotor-bearing system增压器转子-支承系统的临界转速计算分析
11.Analysis on Spindle Rotor Critical Speed Based on Transfer Matrix Method基于传递矩阵法主轴转子临界转速分析
12.Local Recognition Technology to the Critical Rotating Speed of Large Hydraulic Generating Set大型水轮发电机组临界转速现场识别技术
13.Research on influences of ball size on the critical speed of small ball mills磨球尺寸对小型球磨机临界转速影响的研究
14.Simple Calculation Method of Critical Rotational Speed of Stirring Shaft with Over Handing Structure带外伸梁的搅拌轴临界转速的简单计算方法
15.Vibration Characteristics of Jeffcott Rotor System Supported by Cylindrical Roller Bearings圆柱滚子轴承若干参数对弹性转子系统临界转速的影响
16.A Study of a Finite Element Model for a Gas Turbine Tie-rod Rotor and its Critical Speed Calculation燃气轮机拉杆转子有限元模型研究及临界转速计算
17.Application of ANSYS Simulation State Analysis to Calculation of Rotor Critical Speed of Turbine GeneratorANSYS模态分析在汽轮发电机转子临界转速计算上的应用
18.Vibration Analysis and Critical Speed Calculation of Rotors for Large Induction Motor林业机械用大型感应电机转子的振动分析及临界转速计算
相关短句/例句
critical rotational speed临界转速
1.The mechanical characteristics of KS-Jet spinning device-the dynamic load on bearings, thecritical rotational speed of the axle, the position of the centre of mass and the dynamic eqilibrum of the pulley and the rotational cup are analysed and calculated in this paper, which shows the way to guarantee the spinning device′s performance and how to improve the functioning life-span of the device.对ＫＳ型气流纺纱器力学特性—轴承的动态负荷、转轴的临界转速、带轮和转杯的质心位置及动平衡进行了分析计算，指出了保证纺纱器性能和提高运转寿命的途
2.This paper discusses anew method of caculatingcritical rotational speed on the basis of studying the transportation rule of long screw drilling sludge and points out thatcritical rotational speed changesradially along the blade,and it is the function of feed speed.传统的临界转速确定方法，缺乏完整性和准确性。
3.Elasticity and plasticity theory were used to develop a computational model of the tool holder to determine thecritical rotational speed as a function of the dimensions,interference,material properties,centrifugal force,pull force and cutting force.临界转速计算模型的建立,可以提高高速旋转刀具夹紧的安全性,并为充分发挥HSK刀柄的高速潜能提供重要的技术依据。
3)critical speeds临界转速
1.Effects of rolling-ball diameter of ceramic bearing on rotorcritical speeds陶瓷轴承滚珠直径对转子临界转速的影响
2.Thecritical speeds and critical thrust are analyzed from the model.在利用实验和现有文献对所建立的模型进行了检验的基础上,对高速微孔钻床主轴系统的临界转速、临界轴向压力进行了分析。
3.The influences of structural parameters uponcritical speeds are also analysed.本文采用有限元法计算了高空速空心锭子的临界转速和振动形态,分析了结构参数对临界转速的影响,设计并制造了高速空心锭子样件,并对样件进行了模态测试,以验证理论计算的正确性。
4)critical rotating speed临界转速
1.Thecritical rotating speed of vacuum plating Cr under the condition of ensuring plating Cr reliably is educed by analyzing the vacuum plating Cr theory of code disc and radial grating and the film forming mechanism.通过对码盘、圆光栅真空镀铬原理及膜层形成机理的分析,给出膜层厚度和影响其均匀性和致密性的主要因素之间的关系式以及安全成膜时被镀件的临界转速,为真空条件下获得厚度均匀、致密性好的铬膜提供了理论依据。
2.Critical rotating speed, a basis for determining the rigidity and rotating speed of the main axle, is an important parameter in the design and manufacture of woodwork machine tool.临界转速是木工机床设计与制造的一个主要参数，为确定木工机床主轴刚度、主轴转速的依据。
3.Critical rotating speed of vacuum plating Cr was given under the condition of ensuring plating Cr reliably.给出了动态真空镀铬保证安全成膜时被镀件不应超过的临界转速ｎ临，为动态目标盘动态旋转条件下的可靠镀铬提供了理论依
5)critical rotation speed临界转速
1.The calculation for rotator scritical rotation speed based on ANSYS;基于ANSYS的转子临界转速计算
2.Calculation of effect of dynamic property of oil film oncritical rotation speed of rotor in journal bearings;轴承油膜动特性对转子临界转速的效应计算
3.The result of numerical analysis indicated that thecritical rotation speed of the coupled rotor system includes acritical rotation speed very close with the single rotor and a new critical speed engendered by coupling,.数值分析结果表明,耦合转子系统的临界转速包括与单转子非常接近的临界转速和耦合形成的新临界转速,而模态除了单转子模态和以某一单转子为主的耦合模态外,还派生出新的耦合模态。
6)critical revolution临界转速
1.An objection against traditional formula on thecritical revolution of vertical screw conveyor was made.对立式螺旋输送机临界转速传统的计算方法提出异议 ,对立式螺旋输送机物料运动状态 ,受力分析进行探讨 ,建立了新的临界转速计算公式 ,并对新老公式进行了实例验算、比
延伸阅读
临界转速使转子发生强烈振动的转速，它是转子动力学中研究得比较完善的一类问题。转动系统中转子各微段的质心不可能严格处于回转轴上，因此，当转子转动时，会出现横向干扰,在某些转速下还会引起系统强烈振动,出现这种情况时的转速就是临界转速。为保证系统正常工作或避免系统因振动而损坏，转动系统的转子工作转速应尽可能避开临界转速，若无法避开，则应采取特殊防振措施。临界转速和转子不旋转时横向振动的固有频率相同，也就是说，临界转速与转子的弹性和质量分布等因素有关。对于具有有限个集中质量的离散转动系统，临界转速的数目等于集中质量的个数；对于质量连续分布的弹性转动系统，临界转速有无穷多个。由于转子的形状通常比较复杂，计算临界转速多用近似方法。当精度要求不高时，可用瑞利法（见瑞利原理）算出临界转速的一阶近似值。瑞利－里兹法和布勃诺夫－伽辽金法则可用来作比较精确的计算。精确计算大型转子最常用的方法是HMP法,它是在H.霍尔泽计算扭振固有频率的方法的基础上，经N.O.密克勒斯塔和M.A.普罗尔改进而来的(HMP就是他们三人姓氏的缩写)。 该法的要点是：先把转子分成若干段，再经换算把每段上的集中质量和分布质量集聚在该段的两端，然后逐段作挠度、转角、弯矩、剪力的传递运算。在运算中，上述四个量都表为一个假定的转速的函数。每一个满足转子两端一切边界条件的转速就是一个临界转速。与各阶临界转速相应的振型也可由此算出。对某些转子，临界转速的概念有了变化，一些只在转动时才显出效应的因素，如急螺效应（回转轴线改变方向时转子产生惯性力矩；转子振动时轴线改变方向）和轴承特性等，会使临界转速随转子的实际转速或转子中由各微段质心偏离引起的不平衡量的大小而改变。当这些因素不能忽略时，临界转速同转子不旋转时的横向振动的固有频率在数值上就不一致。参考书目丁士铎著：《转轴的临界速度》,中国工业出版社,北京，1962。
