期刊文献+

列车白车身损耗因子试验研究 被引量:5

Experimental study on loss factors for train carriage body in white
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摘要 对7 m长高铁车厢白车身划分子系统,根据能量平衡方程确立子系统总损耗因子、内损耗因子和耦合损耗因子的关系,通过测量总损耗因子和能量比可以直接计算内损耗因子和耦合损耗因子。为了准确测量总损耗因子,计算中采用Hilbert变换求瞬态信号对数衰减率的方法,其创新点在于不需要测量输入功率就可以得到完整方程并获得统计能量分析参数。内损耗因子和耦合损耗因子的计算结果可以为建立车厢能量统计模型提供数据参考。 The train carriage body in white( BIW),with the length of 7 meters,was divided into 6 subsystems.Based on the energy balance equation,the interrelation among total loss factor,internal loss factor and coupling loss factor of subsystems was determined. Internal loss factor and coupling loss factor can be calculated by using experimental results of total loss factor and the energy ratio. In order to improve the accuracy of experimental results of total loss factor,a method of Hilbert transform, without need of measuring input power, was introduced to calculate the logarithmic decrement of transient response. The results of loss factors can be used for building up the statistical energy analysis( SEA) model of high speed railway carriage.
出处 《振动与冲击》 EI CSCD 北大核心 2015年第5期20-25,共6页 Journal of Vibration and Shock
基金 国家973计划(2013CB632900) 国家863计划(2011AA11A103)资助项目
关键词 白车身 统计能量分析 总损耗因子 内损耗因子 耦合损耗因子 HILBERT变换 body in white(BIW) statistical energy analysis(SEA) total loss factor internal loss factor coupling loss factor Hilbert transform
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  • 1Lyon R H, DeJong R G, Heckl M. Theory and application of statistical energy analysis [ J ]. The Journal of the Acoustical Society of America, 1995, 98 (6) : 3021 - 3021.
  • 2Maxit L, Guyader J L. Estimation of SEA coupling loss fac- tors using a dual formulation and FEM modal information[ J]. part I: theory. J Sound Vib, 2001, 239(5) : 907 -930.
  • 3Bies D A, Hamid S. determination of loss and coupling loss factors by the power injection method [ J ]. J Sound Vib, 1980, 70(2) : 187 -204.
  • 4Liu W, Ewing M S. Experimental and Analytical Estimation of Loss Factors by the Power Input Method [ J ]. AIAA Jour- nal, 2007, 45 (2) : 477 - 484.
  • 5张红亮,孔宪仁,刘源,齐金玲.宽频域的内损耗因子实验辨识方法研究[J].振动与冲击,2013,32(12):179-184. 被引量:12
  • 6Wu L, Agren A. Analysis of initial decay rate in relation toestimates of loss factor and equivalent mass in experimental SEA[J]. ISMA 21, 1996:187 - 198.
  • 7Bloss B C, Rao M D. Estimation of frequency-averaged loss factors by the power injection and the impulse response decay methods [ J ]. The Journal of the Acoustical Society of Ameri- ca,2005,117 : 240 - 249.
  • 8Cabell R, SchiUer N, Allen A, et M. l~ss factor estimation using the impulse response decay method on a stiffened struc- ture [ C ]. Inter-Noise 2009, Ottawa, Canada, 2009.
  • 9毛伯永,谢石林,张希农.冲击载荷识别的瞬态统计能量分析方法[J].振动与冲击,2013,32(14):46-51. 被引量:12
  • 10程广利,关成彬,胡生亮.基于Hilbert变换的结构内损耗因子测试研究[J].噪声与振动控制,2006,26(4):105-107. 被引量:15

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