联合载荷下燃油泵调节器声振特性分析  

Vibration and noise analysis of fuel pump regulator under combined load

作　　者：胡学满 侯亮[1] 卜祥建 周毅博 HU Xueman;HOU Liang;BU Xiangjian;ZHOU Yibo(Department of Mechanical and Electrical Engineering,Xiamen University,Xiamen Fujian 361102,China;School of Transportation Science and Engineering,Beihang University,Beijing 100191,China;Aero Engine Control System Institute,Aero Engine Corporation of China,Wuxi Jiangsu 214063,China)

机构地区：[1]厦门大学机电工程系,福建厦门361102 [2]北京航空航天大学交通科学与工程学院,北京100191 [3]中国航发控制系统研究所,江苏无锡214063

出　　处：《航空动力学报》2024年第10期76-88,共13页Journal of Aerospace Power

基　　金：国家自然科学基金面上项目(51975495);厦门市重大科技项目(3502Z20191019);中央引导地方科技发展专项(2020L3002)。

摘　　要：为了探究高集成燃油泵调节器在结构载荷和流体载荷联合作用下的动力学特性,比较其工作状态与非工作状态的响应差异。根据液压系统工作原理,建立液压模型,获得极限工况下燃油主要作用区域的压强。基于Ploymax法识别结构系统的阻尼,由响应控制原理和系统特征重构激励点载荷,并结合大质量法(large mass method,LMM)实现载荷形式的转化。利用声固耦合法求解组合边界下系统的模态和振动响应,采用间接边界元法(indirect boundary element method,IBEM)计算声学响应。研究表明:相比于非流固耦合结果,耦合自由模态变化程度小,考虑机匣振动及燃油预应力作用下的耦合振动噪声峰值响应在低频段明显降低,第一阶频率降低17.3%,该频率下最高噪声值降低约14.3 dB,600 Hz以后响应有增大趋势。To investigate the dynamics of a highly integrated fuel pump regulator under combined structural and fluid loads,and compare the difference in responses between its working and non-working states,a hydraulic model was established to obtain the pressure of main action area under extreme conditions according to the principle of the hydraulic system.The structural damping was identified by the Ploymax method.The excitation load was reconstructed by the response control principle and system characteristics,and the load form was transformed by the large mass method(LMM).The acousticstructure interaction method was used to solve the modal and vibration responses under the combined boundary,and the indirect boundary element method(IBEM)was used to calculate the acoustic response.The results indicated that the change of free mode without fuel prestress was little,and the peak response of vibration and noise considering casing vibration and fuel prestress was significantly reduced at low frequency,the first order frequency was reduced by 17.3%,and the maximum noise value at this frequency was reduced by about 14.3 dB,and the response had a tendency of increase beyond 600 Hz,compared with results of non-fluid-structure interaction.

关 键 词：燃油泵调节器 联合载荷 液压系统 大质量法 流固耦合 振动噪声 

分 类 号：V233.2[航空宇航科学与技术—航空宇航推进理论与工程]