CAJ | 학술논문

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。
건립료비은태유막력작용하，편각불대중팽마축계적동역학모형，통과인입축계간적위이약속，유Lagrange 방정도출료불대중축계적진동방정，연구료가속조건하，축계횡향진동특성수가속도、편각불대중량적변화규률。연구표명：편각불대중적존재，증강료계통적비선성화운동우합；편각불대중、축승유막、국부팽마등인소일기，통과자격려、삼수격려화외격려등방식격기료축계적비선성진동향응；가속공황하，편각불대중축계횡향진동출현료신적공진특성。
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 non-linear and coupled terms to the systems,which results in some new resonant frequencies,including super -har-monic resonance,sub -harmonic resonance and combination resonance.