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《China Mechanical Engineering》 2015-01
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Theoretical Calculation and Experimental Analyses of Natural Frequency for High Frequency Dynamometer

Huang Zhen;Zhao Wei;Nanjing University of Aeronautics & Astronautics;  
Concerning the low natural frequency of dynamometers for high speed cutting to acquire forces signals,a initial model of high frequency dynamometer was designed and its natural frequency can be as 9kHz.Based on the method of Dunkerley,a simplified model of the dynamometer was built to achieve the theoretical natural frequency and the computational formula.Meanwhile,the simulation values and actual values of the natural frequency were obtained by modal analysis with the use of the finite element simulation and vibration modal test,and the high speed cutting test was conducted for the validation.The results indicate that theoretical values and simulation values are a little greater than the actual values,and the dimensions of key structure have an great impact on the natural frequency,which provide a necessary reference for the structure optimization of similar dynamometers.
【Fund】: 国家重点基础研究发展计划(973计划)资助项目(2009CB724401)
【CateGory Index】: TH823
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