A Prediction Method for Dynamic Performance of Machine Tool Joint Surfaces

A Prediction Method for Dynamic Performance of Machine Tool Joint Surfaces
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DOI：
10.4028/www.scientific.net/amm.437.8
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发表时间：
2013-10
期刊：
Applied Mechanics and Materials
影响因子：
--
通讯作者：
Yao Yang;Juntang Yuan;Z. Wang;Biao Yang
Yao Yang;Juntang Yuan;Z. Wang;Biao Yang
中科院分区：
其他
文献类型：
--
作者：
Yao Yang;Juntang Yuan;Z. Wang;Biao Yang

文献摘要

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本文提出了结合面动态建模方法，通过虚拟材料层单元准确预测机床的动态性能。在此过程中，利用有限元理论得到接触刚度与虚拟材料层参数的数值关系，并利用虚拟材料层单元和多点约束技术（MPC）建立有限元模型。对不同接触刚度下的简单模型进行模态分析。结果表明，该模型的理论固有频率与模拟固有频率的相对误差小于2%。
The method for dynamic modeling of joint surfaces is proposed to predict dynamic performance of machine tool accurately by virtual material layer elements in this paper. For this process, the numerical relations of contact stiffness and virtual material layer parameters are obtained by finite element theory, and the finite element model is founded by virtual material layer elements and multiple point constrain technique (MPC). Modal analysis of a simple model under different contact stiffness is carried out. It has shown the relative errors between theoretical natural frequencies and simulated ones of this model are less than 2%.