CAJ | 학술논문

针对某型号加工中心整机有限元建模和动态特性分析，提出应用柔性连接单元来模拟结合部接触面间的相互作用，基于结合部的基础动态特性参数计算柔性连接单元的动态参数值，从而建立机床固定结合部的有限元模型，并将其应用于机床整机的模态分析。最后对该机床的整机进行模态测试实验，对比研究仿真结果和测试实验结果。结果证明机床固定结合部有限元模型具有较高的有效性和实用性，为机床整机特性的优化设计和表征提供一种简便有效的建模方法。
침대모형호가공중심정궤유한원건모화동태특성분석，제출응용유성련접단원래모의결합부접촉면간적상호작용，기우결합부적기출동태특성삼수계산유성련접단원적동태삼수치，종이건립궤상고정결합부적유한원모형，병장기응용우궤상정궤적모태분석。최후대해궤상적정궤진행모태측시실험，대비연구방진결과화측시실험결과。결과증명궤상고정결합부유한원모형구유교고적유효성화실용성，위궤상정궤특성적우화설계화표정제공일충간편유효적건모방법。
Aiming at the modeling and analysis of global dynamical properties of one machining center using the finite element method (FEM),the flexible connecting element was proposed to model the interaction at unit joint surface.According with the founda-tional dynamical parameters of unit joint,the dynamic parameter of the flexible connection element was computed.Then,the finite ele-ment model of the fixed unit joint of machine tools was established to analyze the global mode of the machine tool.Finally experiments were performed to obtain the global mode of the machine tool and to be compared with the simulation results.Result shows that the pro-posed finite element model is effective and practicable to model the fixed unit joint of machine tools,which provides a simple and effec-tive modeling method for the optimum design and characterization of the machine tool.