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Finite element analysis

Finite element analysis

Analyzing and eliminating vibration problems

Finite element machine analysis is applied with modifications of the system such as planned speed increases. It contributes to the solution of problems even when there are acute vibration problems.

With finite element analysis, a model of the machine structure is created based on design drawings or measurements. Vibration measurements at the machine supplement the analysis. The calculation model can be checked and adapted on the basis of the measurements taking the current condition of the machine into account. With the aid of a calculation model verified in this way, the vibration values expected can be calculated very accurately, even for speeds that cannot currently be achieved by the machine. The vibration values calculated are compared with the permissible values according to Voith Standard 111. With impermissibly high vibrations, the effectiveness of various remedies can be investigated in the calculation model before they are implemented.

The machine analysis by means of the finite element method allows a statement about the suitability of the machine frame in the case of a speed increase. If necessary, the effectiveness of required conversion measures can then be investigated with the aid of the model. Even with acute vibration problems, finite element analyses are suitable methods for identifying the problem and working out possible remedies.