基于子结构导纳法的UUV发动机本体参数化建模研究

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (23) : 185-190.

论文

韩飞，王敏庆

作者信息 +

Parametric Modeling of UUV Engine body based on Substructure Receptance Method

HAN Fei, WANG Min-qing

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文章历史 +

摘要

为实现UUV发动机本体结构的参数化建模，基于模态分析结果以及外部激励特性，建立子结构等效模型，根据能量守恒原理以及导纳功率流的定义计算了各子结构的等效线导纳，根据边界连续条件确定耦合结构振动方程，最终建立了发动机本体振动传递参数化模型，计算了发动机本体不同位置处的输入导纳。通过试验对模型的有效性进行了验证。以发动机本体所受激励作为输入，根据所建模型开展了参数影响分析，结果表明：在400Hz~1.8kHz频段内，气缸轴向力以及滚轮切向力对舱段壳振动响应的贡献较大,建模中需要考虑发动机不同方向上的振动传递特性；增大摆盘箱端盖厚度能够显著降低舱段壳的振动响应。

Abstract

To achieve an parametric model of UUV engine body, considering modal analysis result and external excitation characteristic, the equivalent model of each substructure was established and their line receptances were calculated based on energy conservation and the definition of mobility power flow. According to boundary conditions, the coupling vibration equation was established, and finally a parametric model of engine body was obtained. The input receptances of engine body at different position were calculated. The model was validated by mechanical receptance experiment. With external excitation as input parameter, the influences of some major parameters vibration were analyzed. Results show that at 400Hz~1.8kHz, the axial force which is applied on cylinder block and the roller force make major contribution to the vibration response of cabin shell, vibration characteristic of different direction needs to be considered in the research of engine modeling; increasing the thickness of swashplate box can significantly reduce the vibration response of cabin shell.

导出引用

韩飞，王敏庆. 基于子结构导纳法的UUV发动机本体参数化建模研究[J]. 振动与冲击, 2016, 35(23): 185-190

HAN Fei, WANG Min-qing . Parametric Modeling of UUV Engine body based on Substructure Receptance Method[J]. Journal of Vibration and Shock, 2016, 35(23): 185-190

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