The industrial request of more geometrical accuracy and respect in tolerances is achieved by the increase of press stiffness and the improvement of auxiliary systems such as dies sets. Consequently, this leads to new related technological problems represented by excessive wear and dies deterioration, which reduce tool life. From a scientific point of view, new tools to numerically model the whole process are needed together with accurate dynamic analysis of each subsystem. The paper presents an application of the analysis of the dynamic behaviour of a screw press. A FE modal analysis is carried out to compute the mode shapes of the structure and the corresponding frequencies. The comparison of the results of the FFT analysis with the frequencies computed in the numerical simulation shows a good agreement validating the FE modal analysis.
Analysis of the dynamic behaviour of a flywheel screw press
BARIANI, PAOLO FRANCESCO;BERTI, GUIDO;GHIOTTI, ANDREA
2002
Abstract
The industrial request of more geometrical accuracy and respect in tolerances is achieved by the increase of press stiffness and the improvement of auxiliary systems such as dies sets. Consequently, this leads to new related technological problems represented by excessive wear and dies deterioration, which reduce tool life. From a scientific point of view, new tools to numerically model the whole process are needed together with accurate dynamic analysis of each subsystem. The paper presents an application of the analysis of the dynamic behaviour of a screw press. A FE modal analysis is carried out to compute the mode shapes of the structure and the corresponding frequencies. The comparison of the results of the FFT analysis with the frequencies computed in the numerical simulation shows a good agreement validating the FE modal analysis.
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