周转斜盘发动机模态分析及减振方案设计
Modal Analysis and Vibration Reduction Measure Design for Swash-plate Engine

针对周转斜盘发动机结构复杂，有限元模型规模大且分析效率较低等问题，引入子结构模态综合法用于发动机振动特性分析和减振设计。基于Ansys软件建立了发动机模态综合法分析模型，计算了发动机模态。分析了发动机振动激励源和振动传递路径，讨论了发动机结构减振措施，提出了发动机关键轴承处采用柔性支撑的减振方案，拟定了柔性支撑减振器可行结构形式。基于模态综合法计算模型，将减振器作为子结构建立采取减振措施的动力学分析模型。谐响分析表明：减振方案在低频段很好的效果。
Considering swash-plate engine has complicated structure,huge finite element model and poor analysis efficiency, the component mode synthesis(CMS) technique was adopted to structural dynamics analysis and vibration reduction design. The CMS analysis model was constructed by Ansys software and calculate the modes. The engine vibration sources and vibration transfer routes were analyzed; vibration reduction measures were discussed, and advanced set isolator at key bearings to reduce vibration. Based on CMS model, isolator substructure set was took into CMS model to got reduction calculation model,and harmonic response results shows the reduction measure is successful at low-frequency stage