船体梁总纵弯曲载荷识别方法及试验验证  

Identification Method and Experimental Verification of Longitudinal Bending Load of Hull Beam

作　　者：高广磊 刘斌[1] 李军[3] 甘进[2] 吴卫国[1] GAO Guanglei;LIU Bin;LI Jun;GAN Jin;WU Weiguo(Green&Smart River-Sea-Going Ship,Cruise and Yacht Research Centre,Wuhan University of Technology,Wuhan 430063,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;China Ship Development and Design Center,Wuhan 430064,China)

机构地区：[1]武汉理工大学绿色智能江海直达船舶与邮轮游艇研究中心,武汉430063 [2]武汉理工大学船海与能源动力工程学院,武汉430063 [3]中国舰船研究设计中心,武汉430064

出　　处：《武汉理工大学学报（交通科学与工程版）》2024年第1期67-71,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金(52271326);中央高校基本科研业务费专项资金(2021III023JC)。

摘　　要：基于结构应变动态响应,采用时域反卷积算法建立了船体梁总纵弯曲载荷识别理论模型.结合Tikhonov正则化理论及FFT(快速傅里叶变换)滤波算法,有效提高了载荷识别精度.并采用系列箱型梁结构模型动载试验验证了载荷识别理论模型的有效性.结果表明:建立的载荷识别理论模型可以准确地反演得出施加载荷时程曲线,误差小于5%.Based on the dynamic response of structural strain,the theoretical model of total longitudinal bending load identification of ship hull beam was established by using time domain deconvolution algorithm.Combining Tikhonov regularization theory and FFT(Fast Fourier Transform)filtering algorithm,the accuracy of load identification was effectively improved.The validity of the theoretical model of load identification was verified by a series of dynamic load tests of box beam structure models.The results show that the established theoretical model of load identification can accurately inverse the time-history curve of applied load,and the error is less than 5%.

关 键 词：总纵弯曲 载荷识别 TIKHONOV正则化 FFT滤波 试验 

分 类 号：U661.4[交通运输工程—船舶及航道工程]