Finite Element Analysis for Machine Joint


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The stiffness and damping of mechanical joint are modeled by the zero thickness joint interfaces theory. The method is applied to analyze the dynamic characteristic of the gantry frame in a five axis turning-milling compound CNC machine tool. The model test is carried out in the gantry frame, and the maximum error of the first sixth mode is 5.63%. The experimental and analysis result show the zeros thickness joint element can provide an effective method to model the machine joint and predict the dynamic characteristic of the assembled structure.



Edited by:

Zhenyu Du and Bin Liu




T. N. Guo et al., "Finite Element Analysis for Machine Joint", Applied Mechanics and Materials, Vols. 26-28, pp. 198-203, 2010

Online since:

June 2010




[1] R. CONNOLLY and R. H. THOMLEY, The Significance of Joint on the Overall Deflection of Machine Tool Structures, 6th MTDR Conf. (1965).

[2] S. VAFAEI, H. RAHNEJAT and R. AINI, Vibration monitoring of high speed spindles using spectral analysis techniques, Machine Tools & Manufacture, 42: 1223 - 1234. (2002).


[3] M. BURDEKIN, N. A. BAKE Cowley. Analysis of the local deformation in machine joints. Mech. Eng. Sci., 34(3): 15-17. (1979).

[4] K.K. Padmanbhan and A.S.R. Murry, Damping in Structural Joints Subjected to Tangential Loads, Proc. Instn. Mech. Engrs. 121-129. (1991).

[5] K.K. Padmanbhan, Predicting of Damping in Machine Joints, Int. J. Mach. Tool Manufacture. 3: 305-314. (1992).

[6] M. Yoshimura. Computer-aided design improvement of machine tool structure incorporating joint dynamics data. Annals of the CIRP, 28(1): 241-246. (1979).

[7] Y. Ren and C.F. Beards. Identification of Effective, Linear Joints Using Coupling and Joint Identification Techniques, Journal of Vibration and Acoustics v120, 331-338. (1998).


[8] Y. Ren, and C.F. Beards, Identification of joint properties of a structure using FRF data, Journal of Sound and Vibration v186: 567-587. (1995).


[9] W.P. Fu, Y.M. Huang and X.L. Zhang, Experimental Investigation of Dynamic Normal Characteristics of Machined Joint Surfaces. Journal of Vibration and Acoustics, Trans ASME, 122: 393-398. (2000).


[10] G.P. Zhang and Y.M. Huang. Predicting dynamic behaviours of a whole machine tool structure based on computer-aided engineering. International Journal of Machine Tools & Manufacture 43: 699-706. (2003).


[11] R.E. Goodman, R.L. Taylor and T.L. Brekker, A Model for the Mechanics of Jointed Rock, Proc. ASCE, Vol. 94, SM3, (1968).