偏角不对中轴系振动的工艺控制措施研究

考虑非线性非稳态油膜力、局部碰摩力和质量不平衡的耦合激励,建立偏角不对中轴系非线性动力学方程,数值模拟并分析不对中偏角量对系统振动特性的影响,根据计算结果制定不对中偏角量的工艺控制标准.仿真计算研究表明:非稳态油膜力激励下,轴系动力学方程形式繁琐,求解困难,导致系统产生复杂的动力学行为,难以通过理论分析有效控制轴系非线性振动,而通过制定工艺可以避免理论研究难题,达到控制非线性振动级别的目的.

Technology control measures of shafting vibration with angle misalignment

Considering the coupling excitation of nonlinear unsteady oil film force, rub-impact forces and mass unbalance, the shafting nonlinear dynamic equations with angular misalignment is firstly proposed. And through numerical simulation, the effect of angular misalignment level on the system vibration characteristics is also studied. Moreover, the technology control standard for misalignment angle value based on the calculation results is developed. Simulation results show that under the unsteady oil film forces excitation, shafting dynamic equations are complicated, and it is difficult to solve them. This leads to the complex dynamic behavior of the system, and makes it difficult to effectively control shafting nonlinear vibration by theoretical analysis. It can avoid theoretical research problems through the developed control process and achieve the purpose of controlling the nonlinear vibration level.