期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
主机拉撑特性对超大型集装箱船全船振动性能的影响 被引量:3
1
作者 王佳颖 孙芳胜 万忠 《船海工程》 北大核心 2017年第4期55-60,共6页
针对主机液压拉撑2种工作模式和布置方式对船舶振动性能的影响问题,以某14 500 TEU集装箱船实船设计为研究对象,采用有限元数值预报方法,进行全船结构振动分析。对4种主机拉撑布置和工作模式工况下的振动响应进行计算,结果表明,在不同... 针对主机液压拉撑2种工作模式和布置方式对船舶振动性能的影响问题,以某14 500 TEU集装箱船实船设计为研究对象,采用有限元数值预报方法,进行全船结构振动分析。对4种主机拉撑布置和工作模式工况下的振动响应进行计算,结果表明,在不同装载状态下,合理切换主机拉撑的布置以及工作模式,可以有效减小主机机架本身和船体结构的振动水平。 展开更多
关键词 振动分析 主机有限元模型 推力轴承力 主机拉撑 主机机架
下载PDF
Entrance Effect on Load Capacity of Orifice Compensated Aerostatic Bearing with Feeding Pocket 被引量:11
2
作者 LONG Wei BAO Gang 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2010年第4期451-459,共9页
The current research of the aerostatic thrust bearing mainly focuses on the porous material bearing and inherent compensated air bearing, which aims at obtaining small physical dimension and large load capacity. Altho... The current research of the aerostatic thrust bearing mainly focuses on the porous material bearing and inherent compensated air bearing, which aims at obtaining small physical dimension and large load capacity. Although porous material bearing appears larger load capacity, materials anisotropy itself and void content distortion caused in heat-treating, and machining processes add greater complexity to internal flow transfer process. Inherent compensated air bearing has the advantages of simple structure and good stability, but its load capacity and static stiffness is not worth somewhat. In this paper, based on hydrostatic lubrication theory, finite volume method is presented for taking entrance effects into account in computing pressure distribution, load capacity and mass flow rates of circular aerostatic thrust bearings. Technical analysis, numerical simulations and laboratory demonstration tests of influence of pocket diameter and pocket depth on loading capacity of aerostatic thrust bearing are carried out on simple orifice compensated air bearings with feeding pockets. The static parameters, such as air consumption and pressure distributions, are measured as a function of supply pressure and air gap height for several different orifices and pockets size. Entrance effects are described in term of typical throttling types, and the effect of pocket diameter and pocket depth on load capacity is systematically described respectively. The proposed research results uncover the causation of throttling action of the orifice compensated air bearing with feed pocket and further develop and improve the design theory of air bearing. 展开更多
关键词 aerostatic thrust bearing feeding pocket entrance effects
下载PDF
Estimation of optimum operating point for thrust magnetic bearing with solid magnet 被引量:7
3
作者 孙首群 田育民 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2003年第4期457-460,共4页
A carrying capacity-temperature rise analysis model has been established for analysis of the carrying capacity, temperature rise and carrying capacity-temperature rise characteristic of a thrust magnetic bearing with ... A carrying capacity-temperature rise analysis model has been established for analysis of the carrying capacity, temperature rise and carrying capacity-temperature rise characteristic of a thrust magnetic bearing with solid magnet. The results indicate that there must be an optimal operating point for the thrust magnetic bearing with solid magnet. The main factors having effect on carrying capacity-temperature rise include static gap and/or ampere-turns. With proper static gap chosen, the bearing can be run near the optimal operating point by adjhusting ampere-turns, thereby optimizing the bearing properties. 展开更多
关键词 thrust magnetic bearing carrying capacity-temperature characteristic carrying capacity thermo equilibrium
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部