基于比例系数-有效独立法对圆柱壳声辐射预报的测点优化布置研究
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摘要
文章以圆柱壳结构为研究对象,以反映测点模态振型相关性的比例系数来修正传统的有效独立法,提出了一种基于比例系数-有效独立法的测点优化布置算法。并分别用基于模态和响应的评价准则与现有的三种测点布置方法进行比较。结果表明:比例系数-有效独立法可有效地避免测点间的信息冗余问题,在保留结构振动特性方面具有明显的优势;并且能更加准确地预报圆柱壳结构的声振响应,是一种适合圆柱壳结构较为理想的测点优化布置算法。
In order to solve the problem about optimal sensor placement for cylinder shell, the improved optimal sensor placement method based on proportion-coefficient effective independence was proposed,which used proportion coefficient to reflect the correlation of sensor information. Comparing this method with three other existing methods from the perspective of mode and response, the proportion coefficient-effective independence method can avoid the information redundancy effectively, and has advantages to keep structural characteristics. Besides, it can accurately predict the vibration and sound. Therefore, it is an ideal method for optimal sensor placement for cylinder shell.
In order to solve the problem about optimal sensor placement for cylinder shell, the improved optimal sensor placement method based on proportion-coefficient effective independence was proposed,which used proportion coefficient to reflect the correlation of sensor information. Comparing this method with three other existing methods from the perspective of mode and response, the proportion coefficient-effective independence method can avoid the information redundancy effectively, and has advantages to keep structural characteristics. Besides, it can accurately predict the vibration and sound. Therefore, it is an ideal method for optimal sensor placement for cylinder shell.
引文
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[14]何龙军,练继建.基于距离系数-有效独立法的大型空间结构传感器优化布置[J].振动与冲击,2013,32(16):14-18.He Longjun,Lian Jijian.Optimal sensor placement for large space structures based on distance coefficient-effective independence method[J].Journal of Vibration and Shock,2013,32(16):14-18.
[15]Breitfeld T.A method for identification of a set of optimal measurement points for experimental modal analysis[J].Journal of Analytical and Experimental Modal Analysis,1996,11:254-273.
[16]刘艳,刘贵杰.传感器优化布置研究现状与展望[J].传感器与微系统,2010,29(11):4-6.Liu Yan,Liu Guijie.Research status and prospect on optimal placement of sensor[J].Transducer and Microsystem Technology,2010,29(11):4-6.
[2]陶襄樊,陈美霞,魏建辉.欠定盲分离方法预报水下双层加筋圆柱壳辐射声场[J].舰船科学技术,2012,34(11):8-13.Tao Xiangfan,Chen Meixia,Wei Jianhui.Prediction of radiated acoustic field for double cylindrical shell under water using underdetermined blind source separation[J].Ship Science and Technology,2012,34(11):8-13.
[3]李冰茹,王宣银,葛辉良.圆柱壳体近场辐射噪声预报与实验研究[J].浙江大学学报(工学版),2010,44(3):563-568.Li Bingru,Wang Xuanyin,Ge Hui Liang.Prediction and experiment for near-field sound radiation of cylindrical shells[J].Journal of Zhejiang University(Engineering Science),2010,44(3):563-568.
[4]王斌,汤渭霖.基于辐射声场预报的圆柱壳表面空间采样研究[J].船舶力学,2010,14(6):690-698.Wang Bin,Tang Weilin.A rule of spatial sampling on cylindrical shells for predicting radiated acoustic field[J].Journal of Ship Mechanics,2010,14(6):690-698.
[5]和卫平,陈美霞.基于有限测点的单层圆柱壳辐射声功率计算[J].船舶力学,2012,16(10):1204-1211.He Weiping,Chen Meixia.Calculation of acoustic power radiated from a cylindrical shell based on a limited number of measurements[J].Journal of Ship Mechanics,2012,16(10):1204-1211.
[6]Kammer D C.Sensor placement for on-orbit modal identification and correlation of large space structure[J].Journal of Guidance,Control and Dynamics,1991,14(2):251-259.
[7]Meo M,Zumpano G.On the optimal sensor placement techniques for a bridge structure[J].Engineering Structures,2005,27:1488-1497.
[8]Yang Yaxun,Hao Xianwu,Sun Lei.Optimal placement of sensors for a bridge structure based on energy coefficient effective independence method[J].Journal of Vibration and Shock,2010,29(11):119-123.
[9]黄玉盈.结构振动分析基础[M].武汉:华中工学院出版社,1988:155,216.Huang Yuyin.Basic of structural vibration analysis[M].Wuhan:Huazhong University of Science and Technology,1988:155,216.
[10]邹经湘.结构动力学[M].哈尔滨:哈尔滨工业大学出版社,1996:64-65.Zou Jinxiang.Structural dynamics[M].Harbin:Harbin Institute of Technology Press,1996:64-65.
[11]田野.动态测试中传感器优化配置的研究与实现[D].武汉:华中科技大学,2003:8-10.Tian Ye.Research on optimal sensor placement in dynamic test and its implementation[D].Wuhan:Huazhong University of Science and Technology,2003:8-10.
[12]戴冠帮.结构模态测试中测点的优化研究[D].南京:南京航空航天大学,2015.Dai Guanbang.Study on the optimization of structural modal testing station[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2015.
[13]于亮亮,黄超勇.基于有效独立法的连采机减速器传感器优化布置[J].机械工程与自动化,2013,2(4):121-123.Yu Liangliang,Huang Chaoyong.Optimal sensor placement based on effective independence method for continuous miner reducer[J].Mechanical Engineering and Automation,2013,2(4):121-123.
[14]何龙军,练继建.基于距离系数-有效独立法的大型空间结构传感器优化布置[J].振动与冲击,2013,32(16):14-18.He Longjun,Lian Jijian.Optimal sensor placement for large space structures based on distance coefficient-effective independence method[J].Journal of Vibration and Shock,2013,32(16):14-18.
[15]Breitfeld T.A method for identification of a set of optimal measurement points for experimental modal analysis[J].Journal of Analytical and Experimental Modal Analysis,1996,11:254-273.
[16]刘艳,刘贵杰.传感器优化布置研究现状与展望[J].传感器与微系统,2010,29(11):4-6.Liu Yan,Liu Guijie.Research status and prospect on optimal placement of sensor[J].Transducer and Microsystem Technology,2010,29(11):4-6.
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