加速过程偏角不对中轴系横向振动特性研究  

LATERAL VIBRATION CHARACTERTICS ANALYSIS OF SHAFTING WITH ANGLE MISALIGNMENT IN ACCELERATING PROCESS

作　　者：周奇郑[1] 王德石[1] 张恺[1] 

机构地区：[1]海军工程大学兵器工程系

出　　处：《动力学与控制学报》2014年第4期315-320,共6页Journal of Dynamics and Control

基　　金：国家自然科学基金青年基金资助项目(51005241)~~

摘　　要：建立了非稳态油膜力作用下,偏角不对中碰摩轴系的动力学模型,通过引入轴系间的位移约束,由Lagrange方程导出了不对中轴系的振动方程,研究了加速条件下,轴系横向振动特性随加速度、偏角不对中量的变化规律.研究表明:偏角不对中的存在,增强了系统的非线性和运动耦合;偏角不对中、轴承油膜、局部碰摩等因素一起,通过自激励、参数激励和外激励等方式激起了轴系的非线性振动响应;加速工况下,偏角不对中轴系横向振动出现了新的共振特性.The dynamic model of shafting with angle misalignment was given under unsteady oil film forces and impact/rub forces, and the dynamic equations were derived by Lagrange equations using displacement restrain condition. Then the lateral vibration characteristics were given in accelerating process. The results indicate that the shafting lateral vibrations are a strongly nonlinear and non - stationary 3 - Dof vibration system including self - excited, parametric and forcing excitation due to angler misalignment. The misalignments bring some new nonlinear and coupled terms to the systems, which results in some new resonant frequencies, including super -harmonic resonance, sub -harmonic resonance and combination resonance.

关 键 词：轴系 偏角不对中 加速过程 振动特性 

分 类 号：O321[理学—一般力学与力学基础]