Mechanical vibration - evaluation of machine vibration by measurements on non - rotating parts - land - based steam turbines and generators in excess of 50 mw with normal operating speeds of 1500 r min , 1800 r min , 3000 r min and 3600 r min 机械振动.通过对非旋转部件的测量评定机械振动.标称运行速度为1500r min 1800r min 3000r min和3600r min的50mw以上的地面汽轮机和发电机
A rotary cell culture system was designed , which was composed of micromotor , rotate part , gear part and et al . in this system , tubular scaffold can rotate slowly around own major axis . by means of this , three - dimension tissues or organs can be cultured in vitro 我们还特别设计了旋转培养装置，通过微型马达驱动，减速装置作用使旋转部分绕自身中心水平轴做缓慢转动，从而使置于旋转部件上的管形支架绕其正中长轴作缓慢旋转，其原理与美国genzrpe公司的rccs （ rotarycellculturesystemrccs ）系统相仿。
In order to solve it radically , making power assembly of bj1036e2f1 light truck the research object and through dynamic simulation analysis of power assembly , this thesis obtains the distribution rules of forces of the bolts linking three shells mentioned above and the relation between forces of the bolts and rotate speed of engine . after finite element mode analysis of these three shells , inherent frequency and vibration model of shell of power assembly are gained , and thus its dynamic character is realized . based on computer simulation analysis , experimental model of power assembly is acquired by vibration test and strength test of shell of power assembly , and the relation of forces of the shell and rotate speed of engine and imbalanced mass of rotate components is studied 为了从根本上解决该问题，本论文以bj1036e2f1轻卡动力总成为研究对象，通过动力总成的动力学仿真分析，找出了三壳之间联接螺栓受力的分布规律和螺栓受力与发动机转速的关系；通过三壳的有限元模态分析，得到了动力总成壳体的固有频率与振型，从而了解了动力总成壳体的动态特性；在计算机仿真分析的基础上，通过动力总成壳体的振动测试和强度测试，得出了动力总成的试验模态，并研究了壳体受力与发动机转速和旋转部件不平衡质量的关系。
The study results given in the present paper have provided a variety of effective numerical methods for the study of vibration characteristics of blade , disc and the blade - disc system . these research results can also serve as a helpful guide to the vibration study of other rotating components 本文的研究成果为汽轮机关键部件叶片?轮盘系统的振动特性研究提供了一些有效的数值方法,得到了一些结论,对工程具有较大的现实意义,同时对其他叶轮机械旋转部件的振动研究也有参考价值。
