一种小型二冲程汽油发动机的动态特性分析

Modern Manufacturing Technology and Equipment(2017)

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Abstract
针对传统小型二冲程汽油机的振动与噪声问题,采用SolidWorks建立发动机三维实体模型,基于ANSYS Workbench对发动机整机进行模态分析,给出发动机前4阶固有频率及振型云图,并辅助以实验模态进行验证.结果表明,发动机最低阶模态频率447.1Hz高于额定运行工频125Hz,系统不会发生结构共振,为预知结构设计的薄弱环节与减振降噪设计提供参考依据.
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