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Jitter Transmission Analysis and Experimental Research for Frame Structure in the Median and High Frequency Regions

机译:中位数和高频区框架结构的抖动传输分析与实验研究

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Frame structure is widely used in practical projects.For jitter of the frame structure excited by median and high frequency disturbances,firstly,the dynamic model of thin plate substructure is built by wave method,and then the dynamic model of frame structure is established by combining wave method and substructure technique.At last,the accurate dynamic response was obtained.The simulation of dynamic characteristic is made,and simulation results are compared with FEM results.On this basis,modal experiment and frequency response experiment is done to verify theoretical results.In comparison to FEM,the results by wave method are accurate in low frequency regions,and the results are more accurate in the median and high frequency regions.The experiment proves wave method is correct and effective for jitter transmission analysis of frame structure in the median and high frequency regions.
机译:框架结构广泛用于实际项目。对于由中值和高频干扰激发的框架结构的抖动,首先,通过波法建立薄板子结构的动态模型,然后通过组合建立框架结构的动态模型波方法和副结构技术。最后,获得了准确的动态响应。制作了动态特性的模拟,并将仿真结果与FEM结果进行了比较。在此基础上,进行了模态实验和频率响应实验来验证理论结果。与FEM相比,通过波方法的结果在低频区域中精确,中值和高频区域的结果更准确。实验证明了波浪法对中位数框架结构的抖动传输分析是正确的。和高频区域。

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