earticle

영어

In this study the structure analysis of tapping machine is developed to improve dynamic
characteristics. To this purpose a tapping m/c is mathematically modelled and dynamic response analysis of the model are investigated by use of Finite Element Method(FEM). The investigation procedures are as follows.
The finite element modelling of the tapping m/c is done with triangular and rectangular plate
elements and each node of the elements has 6 degrees of freedom. And this model is idealized as a forced vibration system under impulse load by cutting force. Model parameters, natural frequency and mode shape, and dynamic response for displacement and stress are analyzed by use of mode superposition method. To reduce computing time of dynamic response analysis, lower vibration mode is analyzed with master-DOF and mass participation factor. In this case maximum relative displacement is occured at 17.483 Hz in the right column.