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SIMULATION EXPERIMENT STUDY ON A CANTILEVER BEAM BASED ON TRANSMISSIBILITY
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摘要: 为研究基于振动传递率的损伤识别方法的可行性,以一钢悬臂梁为例,进行了多种仿真试验,分别研究了振动传递率的可重复性、损伤敏感性和损伤位置敏感性。仿真试验结果显示:振动传递率不依赖于结构激励荷载;对损伤具有较强的敏感性;能识别结构损伤位置。相对于多位置损伤识别相比,其对于单位置损伤识别具有更好的效果。Abstract: For studying the feasibility of the damage identification method based on vibration transmissibility,various simulation experiments on a cantilever beam were done to study the repeatability,sensitivity for damage,and sensitivity for damage location.The results of the simulation experiments showed that the viration transmissibility was independent of the exciting load,sensitive to damage strongly,and can identify the damage locations.But in comparison with identifying several damage locations,the method could identify single damage location more effectively.
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Key words:
- cantilever beam /
- transmissibility /
- damage Identification
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[2] PARK N G, PARK Y S. Damage Detection Using SpatiallyIncomplete Frequency Response Functions[J]. MechanicalSystems and Signal Processing,2003,17(3):519-532. SAMPAIO R P C, MAIA N M. Damage Detection Using theFrequency-Response-Function Curvature Method[J]. Journal ofSound and Vibration,1999,226(5):1029-1042. [3] 杨彦芳.基于频响函数的网架结构损伤诊断方法研究[D].大连:大连理工大学,2008. [4] G. Manson, K. Worden. Experimental Validation of A StructuralHealth Monitoring Methodology: Part III. Damage Location on AnAircraft Wing[J]. Journal of Sound and Vibration,2003,259(2):365-385. [5] Zhang H, Schulz M J, Ferguson F. Structural Health MonitoringUsing Transmittance Functions[J]. Mechanical Systems andSignal Processing,1999,13(5):765-787. [6] 张启伟.桥梁健康监测中的损伤特征提取与异常诊断[J].同济大学学报,2003,31(3):258-262. [7] 李德葆,陆秋海.工程振动试验分析[M].北京:清华大学出版社,2004. -
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