华中科技大学学报：自然科学版2012，Vol.40Issue(6)：1-5,5.
裂纹梁固有频率对参数敏感性分析
Sensitivity analysis of cracked beam＇s natural frequency to parameters
摘要
Abstract
In order to perfect the percussion experiment theory and to determine the degree of influence of various parameter errors on crack identification, the geometric and physical parameters of several typical cracked beam were selected and the corresponding parameter errors were set. Then the sensitivity of the natural frequency wad analyzed through the simulation. For different geometric pa- rameters, the analysis of the processing error of the experimental result was also given. The percussion experiment on finishing specimens was done. The final conclusions are as follows： the natural frequency of rectangular cracked beam is sensitive to the height and length parameters, while the natural frequency of circular cracked beam is sensitive to the radius and length parameters. Therefore, in the specimen processing and experiment, the accuracy of these parameters need to be strictly controlled.关键词
裂纹/梁/参数/敏感性/固有频率/敲击实验Key words
crack/beam/parameter/sensitivity/natural frequency/percussion experiment分类
机械工程引用本文复制引用
轩建平,余博,王佳南..裂纹梁固有频率对参数敏感性分析[J].华中科技大学学报：自然科学版,2012,40(6):1-5,5.基金项目
国家自然科学基金资助项目 （）
国家高技术研究发展计划资助项目（2008AA042802）. （）
