发动机变惯量曲轴系统1∶1∶1共振分岔分析
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摘要
为了进一步对发动机实施节能抗振降噪优化处理,深入研究变惯量参数对内燃机曲轴系统扭振分岔特性的影响。利用描述发动机曲轴扭转振动的非线性动力学方程,针对转动频率、不平衡激励频率及固有频率之间关系为1:1:1时的情况,分别利用多尺度法得到并分析了描述系统稳态振动的平均方程。并以某型号发动机为例,得到了不同参数状态下,该发动机曲轴的扭振分岔情况,为其系统性优化设计提供理论依据。
In order to further implement energy saving & anti-vibration & noise reduction for the engine,and do in-depth study for the influence of Variable Inertia Parameters to bifurcation behavior of engine crankshaft torsional vibration. This paper based on nonlinear dynamic equation of crankshaft torsional vibration description,under the condition of Rotational frequency vs unbalanced excitation frequency vs inherent frequency are 1:1:1,using multiscale method to derive and analyze average equation which is from aforementioned steady state vibration. Take certain model engine as an example,we got bifurcation behavior of engine crankshaft torsional vibration under the condition of different parameters,So this paper can provide theoretical basis for the systemic optimization design.
In order to further implement energy saving & anti-vibration & noise reduction for the engine,and do in-depth study for the influence of Variable Inertia Parameters to bifurcation behavior of engine crankshaft torsional vibration. This paper based on nonlinear dynamic equation of crankshaft torsional vibration description,under the condition of Rotational frequency vs unbalanced excitation frequency vs inherent frequency are 1:1:1,using multiscale method to derive and analyze average equation which is from aforementioned steady state vibration. Take certain model engine as an example,we got bifurcation behavior of engine crankshaft torsional vibration under the condition of different parameters,So this paper can provide theoretical basis for the systemic optimization design.
引文
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[3]韩建鑫,王炜,张琪昌.内燃机曲轴系统变惯量公式的修正[J].内燃机学报,2014,32(3):271-275.
[4]韩建鑫,王炜,张琪昌.变惯量曲轴系统扭转振动参数分岔分析[J].振动与冲击,2013,32(7):118-123.
[2]王秋芝,朱均.考虑变惯量影响的曲轴扭转振动[J].应用科技,1983(2):1-11.
[3]韩建鑫,王炜,张琪昌.内燃机曲轴系统变惯量公式的修正[J].内燃机学报,2014,32(3):271-275.
[4]韩建鑫,王炜,张琪昌.变惯量曲轴系统扭转振动参数分岔分析[J].振动与冲击,2013,32(7):118-123.