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RESEARCH ON THE DYNAMIC CHARACTERISTIC AND ITS IDENTIFICATION OF THE JOINT BETWEEN COLUMN AND BED OF A MACHINING CENTER

Tong Zhongfang Zhang Jie (Zhejiang University)  
In this paper, a method of identification of the joint dynamic parameters of complex structural model is proposed, which involves establishment of the joint dynamic model by using method of joint element, establishment of the dynamic model of column and bed with Less order and higher accuracy by modification of the original finite element model, establishment of the cost function by using measurable transfer function and identification of the dynamic parameter of the joint with 6锝? contact spot per cm~2 under different preloads on the model of machining center Type JCS-018.
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