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弹性梁运动刚化现象的Rayleigh法分析 被引量:1
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作者 员超 宗光华 张启先 《中国机械工程》 EI CAS CSCD 北大核心 1999年第10期1191-1192,1195,共3页
针对作定轴转动的弹性梁随着转动角速度的增加,其结构刚度随之增大——运动刚化的现象,用Rayleigh 能量近似法简便地得出了水平面内作定轴转动之弹性梁基频的运动刚化修正系数。对于柔度较大的弹性梁,主要由基频决定其振动... 针对作定轴转动的弹性梁随着转动角速度的增加,其结构刚度随之增大——运动刚化的现象,用Rayleigh 能量近似法简便地得出了水平面内作定轴转动之弹性梁基频的运动刚化修正系数。对于柔度较大的弹性梁,主要由基频决定其振动性态。因此,该分析结果不仅可直观地反映弹性结构运动刚化现象的变化规律,而且可直接应用于水平面内作定轴转动之弹性梁的实时控制。 展开更多
关键词 弹性机械臂 运动刚化 定轴运动 能量近似法
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Research on Axial Trail of High-Speed Gas Painting Automizor
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作者 杨志永 张大卫 黄田 《Transactions of Tianjin University》 EI CAS 2003年第1期45-49,共5页
The non linear dynamic model is set up of one type of high speed painting automizor with gas supporting system. The stability of motion and dynamic response of the gas painting automizor system are studied over a rela... The non linear dynamic model is set up of one type of high speed painting automizor with gas supporting system. The stability of motion and dynamic response of the gas painting automizor system are studied over a relatively wide range of rotating speed by numerical analytic method, the critical velocity under working condition is found, and rotate stability and critical condition are discussed in theory. Furthermore, the range of the critical parameter of the system when Hopf bifurcation occurs and the law between axis trace and bearing clearance are acquired, too. 展开更多
关键词 gas bearing painting automizor stability of motion axial trail critical velocity
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