Finite Element Analysis for Machine Joint
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.
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