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基于传递矩阵的管路-壳体耦合系统动力学建模

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针对管路-支撑-壳体耦合系统的振动响应快速预报和传递特性分析，采用Riccati传递矩阵法建立直管-弯管-变径管-泵-阀门复杂组合管路的动力学模型，以获取考虑流固耦合效应时组合管路的频响特性;采用频响函数子结构综合方法建立组合管路-支撑-壳体耦合系统的动力学模型，以获得在管路系统泵源模拟激励下的振动传递特性。对耦合系统的位移频响、传递特性开展分析，得到如下结论:对组合管路利用Riccati变换可解决传递矩阵法多管段数值精度累积误差的问题，在垂向简谐力激励下壳体和管路受到的垂向力大于轴向力和横向力，在各个支撑处通过各个方向传递的功率流量级基本一致。
Dynamic Modeling of Pipeline-support-shell Coupling Systems Based on Riccati Transfer Matrix and Frequency Response Function Synthesis
Aiming at rapid prediction and transfer characteristics analysis of vibration responses of pipeline-supports-shell coupling system,dynamic model of straight-elbow-reducer-pump-valve combined pipeline system was established by Riccati transfer matrix method to obtain its frequency response functions considering the fluid-structure interaction effect.Dynamic model of the pipeline-supports-shell coupling system was established by the frequency response function based substructure method to obtain the vibration transfer characteristics under the simulated excitation of the pump source of the pipeline system.The frequency responses and transfer characteristics of the coupled system were analyzed.It is concluded that the Riccati transfer matrix method is capable to decrease the cumulative error for the multiple pipe sections by the trans-fer matrix method.The transmitted vertical force by the supports is greater than the axial force and transverse force under the excitation of the vertical harmonic force,and the power flow transmitted through all directions at each support is basically of the same level.

vibration and wavecombined pipelinefluid-structure interactionRiccati transfer matrix methodfre-quency response function synthesismodeling and optimization

张啸涵、黄修长、曾庆娜、杨咏

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上海交通大学 机械系统与振动全国重点实验室,上海 200240

上海船舶设备研究所 船舶与海洋工程特种装备和动力系统国家工程研究中心,上海 200031

中国核动力研究设计院 核反应堆系统设计技术重点实验室,成都 610213

振动与波 组合管路 流固耦合 Riccati传递矩阵法 频响函数综合 建模与优化

中核集团"领创科研"资助项目

CNNC-LC-2021-中核科发[2021]155号

2024

10.3969/j.issn.1006-1355.2024.05.004

噪声与振动控制
中国声学学会

噪声与振动控制

CSTPCD北大核心
影响因子：0.622
ISSN：1006-1355
年,卷(期)：2024.44(5)