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Comparison of measured and simulate
Comparison of measured and simulated modal parameters
The comparison of measured and simulated modal proper- ties of suction tube assy and discharge tube assy are tabu- lated in Tables 7 and 8 below. For the suction tube assy,
both the measured and simulated natural frequencies are overall in good correlation with a maximum correlation error of 8.54% occuring at measured frequency of 29.5 Hz. For the frequency range from 0 to 200 Hz, it is found that the FE simulation extracts more natural frequencies than measured natural frequencies. The measured frequency of 179 Hz is not captured in simulation whereas the other four simulated frequencies at 7.09, 19, 131.68 and 197.51 Hz are not discovered from the modal testing. For the discharge tube assy, a maximum correlation error of 19.14% occurs at 13.48 Hz and there are about five natural frequencies where the correlation and comparison could not be determined. Some of the frequencies found in measurement are not found in simulation and vice versa. Nevertheless, the overall comparison of most of the frequencies gives a good degree of correlation with all existing comparison giving less than 20% error.
The comparison of measured and simulated modal proper- ties of suction tube assy and discharge tube assy are tabu- lated in Tables 7 and 8 below. For the suction tube assy,
both the measured and simulated natural frequencies are overall in good correlation with a maximum correlation error of 8.54% occuring at measured frequency of 29.5 Hz. For the frequency range from 0 to 200 Hz, it is found that the FE simulation extracts more natural frequencies than measured natural frequencies. The measured frequency of 179 Hz is not captured in simulation whereas the other four simulated frequencies at 7.09, 19, 131.68 and 197.51 Hz are not discovered from the modal testing. For the discharge tube assy, a maximum correlation error of 19.14% occurs at 13.48 Hz and there are about five natural frequencies where the correlation and comparison could not be determined. Some of the frequencies found in measurement are not found in simulation and vice versa. Nevertheless, the overall comparison of most of the frequencies gives a good degree of correlation with all existing comparison giving less than 20% error.
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Comparison of measured and simulated modal parameters<br>The comparison of measured and simulated modal proper- ties of suction tube assy and discharge tube assy are tabu- lated in Tables 7 and 8 below. For the suction tube assy,<br>both the measured and simulated natural frequencies are overall in good correlation with a maximum correlation error of 8.54% occuring at measured frequency of 29.5 Hz. For the frequency range from 0 to 200 Hz, it is found that the FE simulation extracts more natural frequencies than measured natural frequencies. The measured frequency of 179 Hz is not captured in simulation whereas the other four simulated frequencies at 7.09, 19, 131.68 and 197.51 Hz are not discovered from the modal testing. For the discharge tube assy, a maximum correlation error of 19.14% occurs at 13.48 Hz and there are about five natural frequencies where the correlation and comparison could not be determined. Some of the frequencies found in measurement are not found in simulation and vice versa. Nevertheless, the overall comparison of most of the frequencies gives a good degree of correlation with all existing comparison giving less than 20% error.
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测量和模拟模态参数的比较<br>在下面的表7和表8中，对吸管体和排放管的测量和模拟模态适当关系进行了比较。对于吸管，管盘，<br>测量和模拟的自然频率总体均具有良好的相关性，在29.5 Hz的测量频率下发生最大相关误差为8.54%。对于从 0 到 200 Hz 的频率范围，FE 仿真提取的自然频率比测量的自然频率多。模拟中未捕获 179 Hz 的测量频率，而从模态测试中未发现其他四个模拟频率（7.09、19、131.68 和 197.51 Hz）。对于放电管体，在13.48 Hz时发生19.14%的最大相关误差，并且有大约5个自然频率，无法确定相关性和比较。在测量中发现的一些频率在模拟中找不到，反之亦然。然而，大多数频率的总体比较与所有现有比较的关联度都小于20%。
正在翻译中..
实测模态参数与模拟模态参数的比较<br>下表7和8列出了吸入管组件和排出管组件的实测和模拟模态特性的比较。对于吸入管组件，<br>实测和模拟的固有频率均具有良好的相关性，在29.5hz的频率下，最大相关误差为8.54%。在0～200hz的频率范围内，有限元模拟得到的固有频率比实测的固有频率要多。模拟中未捕获179hz的测量频率，而模态试验中未发现7.09、19、131.68和197.51hz的其他四个模拟频率。对于放电管组件，在13.48hz出现19.14%的最大相关误差，并且有大约5个固有频率无法确定相关和比较。在测量中发现的一些频率在模拟中找不到，反之亦然。然而，大多数频率的总体比较给出了与所有现有比较的良好关联度，误差小于20%。<br>
正在翻译中..
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