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| 1 | 轴-壳体系统耦合振动的建模与分析显示文摘耦合振动建模与分析是振动控制的基础。针对末端带有集中质量的轴与加筋壳体的耦合系统,分别利用解析法和有限元法计算轴系导纳和加筋壳体导纳,并将艉轴承与推力轴承作为子结构连接单元,通过频响函数综合进行模型合成,得到整个系统的频域描述模型。在此模型基础上,分析了系统振动固有特性及其随轴承刚度的变化规律,并讨论在轴上实施纵向振动控制的可行性。结果表明,推力轴承刚度改变轴系纵振频率,对纵振能量传递有明显影响;轴系纵向振动不仅会引起壳体纵向共振,还会引起壳体弯曲振动,形成轴-壳体纵横耦合模态;轴的纵向振动控制可以减小耦合系统振动。 | 李攀硕 李栋梁 张志谊 | 2012 | 振动与冲击2012，31，5： | 13 |
| 2 | 船舶推力轴承纵向橡胶减振器设计显示文摘介绍设计一种嵌入式船舶推力轴承纵向橡胶减振器,以隔离由于螺旋桨脉动推力激励而引起的船舶轴系纵向振动。首先,建立减振系统的动力学简化模型,通过计算分析对减振块刚度参数进行优化设计;其次,根据刚度优化结果和相关经验公式对橡胶减振块的外形尺寸进行设计;最后对减振块的强度特性进行校核分析。结果表明所设计的减振器满足强度指标要求;在此基础上,提出橡胶减振块在推力轴承上的具体布置形式、开槽及装配固定方案,为船舶推力轴承纵向减振器的设计计算提供参考。 | 杨志荣 秦春云 饶柱石 周其斗 | 2013 | 噪声与振动控制2013，33，6： | 13 |
| 3 | 某航空发动机扭振减振器失效机理分析显示文摘为了探究某航空发动机曲轴扭振减振器的失效机理,采用有限元法对该发动机轴系进行了模态分析,并进行了试验验证;基于轴系扭纵耦合振动理论和谐响应分析计算了该轴系的轴向振动位移幅值;在此基础上对扭振减振器进行了失效分析。研究结果表明,因该航空发动机经常工作在过渡工况,引起轴系扭转共振和扭纵耦合振动,使得轴系轴向位移较大,轴系产生的轴向力是造成该扭振减振器失效的最主要原因。 | 樊康 华春蓉 闫兵 陈楚才 汪自强 | 2018 | 机械科学与技术2018，37，2： | 9 |
| 4 | 基于瑞利法的内燃机曲轴扭纵耦合振动显示文摘采用瑞利法对高速内燃机曲轴扭纵耦合振动进行了研究。将内燃机曲轴等效为连续分布阶梯轴模型,根据当量轴段以及集中质量的动能和势能关系,通过拉格朗日方程分别建立轴系扭振模型和纵振模型。根据刚度耦合原理,并考虑轴系强迫激励进而建立了扭纵耦合强迫振动模型。采用谐次分析法对模型求解后,通过与采用三维振动测量装置对某直列四缸柴油机曲轴自由端的振动信号进行实际测量所得到的结果进行比较,可以发现,扭振和纵振与实际测量的结果在各主要谐次都保持相当的一致。 | 梁兴雨 舒歌群 卫海桥 王养军 | 2006 | 机械工程学报2006，42，B05： | 8 |
| 5 | 带螺旋桨的曲轴系统扭纵耦合非线性振动模型显示文摘在考虑螺旋桨、柴油机连杆和活塞变惯量、扭纵耦合效应的情况下,采用当量轴向力的方法,将横向变惯量和气缸体压力变化激励转换为轴向激励,建立6拐螺旋桨曲轴系统的非线性动力学模型,该模型代表一个强非线性非自治系统。通过数值仿真,研究该系统在工作转速下的时间响应和频谱。结果表明,在螺旋桨与第1个曲拐之间、第5与第6个曲拐之间的相对扭转振动频谱中,2倍频成分非常明显;在轴向相对振动响应中,含有基频、6倍频和20倍频成分;作用在螺旋桨上的4倍频激励成分没有出现。因此,在柴油机螺旋桨曲轴系统设计中,只根据线性动力学分析结果进行强度计算和振动分析会导致较大误差。 | 张锁怀 郭军 | 2010 | 机械工程学报2010，46，11： | 6 |
| 6 | Identification of Axial Vibration Excitation Source in Vehicle Engine Crankshafts Using an Auto-regressive and Moving Average Model显示文摘Violent axial vibration of a vehicle engine crankshaft might lead to multiple defects to the engine.Much research on mechanism and control measures has been done on engines,such as using the dynamic stiffness matrix method,rayleigh differential method,and system matrix method.But the source of axial vibration has not been identified clearly because there are many excitation factors for the axial vibration of a crankshaft,such as coupled torsional-axial vibration and coupled bending-axial vibration,etc.In order to improve the calculation reliability and identify the excitation source of axial vibration of in vehicle engine crankshafts,this paper presents a method to identify the axial vibration excitation source of crankshafts for high speed diesel engines based on an auto-regressive and moving average(ARMA) model.Through determining initial moving average variables and measuring axial /bending/torsional vibrations of a crankshaft at the free-end of a 4-cylinder diesel engine,autoregressive spectrum analysis is applied to the measured vibration signal.The results show that the axial vibration of the crankshaft is mainly excited by coupled bending vibration at high speed.But at low speed,the axial vibration in some frequencies is excited primarily by torsional excitation.Through investigation of axial vibration source of engine crankshafts,calculation accuracy of vibration can be improved significantly. | LIANG Xingyu WANG Yuesen SHU Gequn WEI Haiqiao DONG Lihui MEI Yifan | 2011 | Chinese Journal of Mechanical Engineering2011，24，6： | 3 |
| 7 | 内燃机曲轴振动研究的内容及方法显示文摘简单综述了内燃机曲轴扭振。 | 付鲁华 吕兴才 张寅豹 | 2004 | 拖拉机与农用运输车2004，31，4： | 3 |
| 8 | 船用柴油机曲轴系统扭纵耦合振动特性研究显示文摘在考虑螺旋桨、连杆和活塞引起的交变转动惯量、扭纵耦合效应等因素的情况下,建立了带螺旋桨的6拐曲轴系统非线性动力学模型,其动力学方程代表了一个强非线性、非自治系统。通过数值仿真,分别研究了系统对初始位移和速度、交变转动惯量、作用在活塞上的压力、作用在螺旋桨上的扭矩和轴向力的响应。研究发现,交变转动惯量和扭纵耦合效应是产生非线性振动的根本原因;不同的激励因素不仅可以导致不同的频率响应成分,而且也会导致同一频率成分具有不同的幅值;在本文的研究条件下,施加在螺旋桨上的激励扭矩和轴向力对系统的动力学行为影响不明显;不同方向上响应对同一激励因素的敏感程度存在明显差异。 | 张锁怀 万明伟 | 2012 | 机械科学与技术2012，31，3： | 2 |
| 9 | Nonlinear Dynamic Modeling for a Diesel Engine Propeller Shafting Used in Large Marines显示文摘Longitudinal vibration,torsional vibration and their coupled vibration are the main vibration modes of the crankshaft-sliding bearing system.However,these vibrations of the propeller-crankshaft-sliding bearing system generated by the fluid exciting force on the propeller are much more complex.Currently,the torsional and longitudinal vibrations have been studied separately while the research on their coupled vibration is few,and the influence of the propeller structure to dynamic characteristics of a crankshaft has not been studied yet.In order to describe the dynamic properties of a crankshaft accurately,a nonlinear dynamic model is proposed taking the effect of torsional-longitudinal coupling and the variable inertia of propeller,connecting rod and piston into account.Numerical simulation cases are carried out to calculate the response data of the system in time and frequency domains under the working speed and over-speed,respectively.Results of vibration analysis of the propeller and crankshaft system coupled in torsional and longitudinal direction indicate that the system dynamic behaviors are relatively complicated especially in the components of the frequency response.For example,the 4 times of an exciting frequency acting on the propeller by fluid appears at 130 r/min,while not yield at 105 r/min.While the possible abnormal vibration at over-speed just needs to be vigilant.So when designing the propeller shafting used in marine diesel engines,strength calculation and vibration analysis based only on linear model may cause great errors and the proposed research provides some references to design diesel engine propeller shafting used in large marines. | ZHANG Qinglei DUAN Jianguo ZHANG Suohuai FU Yumin | 2014 | Chinese Journal of Mechanical Engineering2014，27，5： | 2 |
| 10 | Dynamic Characteristics of the Crankshaft System with Coupling Effect显示文摘 | S.H. Zhang K. Jia | 2010 | Journal of Energy and Power Engineering2010，4，5： | 1 |
| 11 | 利用有限元法解决柴油机轴系振动的方法显示文摘有限元法是基于建立起来的数字模型,用现代数学方法求出有关微分方程定解问题的解,并对计算结果进行加工和解释。阐述利用有限元法求解振动问题的基本思想,以及利用有限元法求解振动问题的解算步骤,为求解诸如柴油机轴系扭转振动、纵向振动和横向振动问题提供方便。 | 刘波 孙中平 | 2007 | 交通科技与经济2007，9，5： | 0 |
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