摘要
基于圆盘非对称转子简化模型和达朗贝尔原理,建立了曲轴单拐弯-扭耦合非线性振动数学模型,并利用解析推导法和四阶龙格库塔的迭代数值求解方法研究了弯曲振动和扭转振动间的相互影响规律。研究结果表明,弯曲振动(或扭转振动)会耦合产生多种频率成分的扭转振动(或弯曲振动),耦合振动幅值随着激励频率和偏心距的增加而加大,且弯曲振动对扭转振动的耦合影响相对较大。
Based on the simplified model of asymmetric disc rotor and D＇alembert＇s principle, the nonlinear mathematical model of coupled bending and torsion vibration is established, and then the mutual influence between the bending vibration and torsion vibration is studied through the theoretical derivation and the solving methods of iterative numerical of fourth-order Runge-Kutta. The results show that the bending vibration（or torsion vibration） will produce various frequency of torsion vibration（or bending vibration） if coupled. The coupling vibration amplitude will raise with the increasing of the excitation frequency and eccentricity, the bending vibration has a relatively large coupling influence on torsion vibration.
出处
《小型内燃机与车辆技术》
2016年第4期65-70,共6页
Small Internal Combustion Engine and Vehicle Technique
关键词
曲拐
弯扭耦合振动
非线性振动
影响规律
Crank throw
Coupled bending and torsion vibration
Nonlinear vibration
Influence rule
