CONTRIBUTIONS TO THE APPROXIMATION WITH POLYNOMIAL FUNCTIONS OF MATERIAL SYSTEMS VIBRATIONS. PART II: APPROXIMATION OF REAL VIBRATION ACCELERATIONS
Abstract
Abstract: The paper presents the approximation of the graphic representations of the measured vibrations for a truck platform, through 10th degree polynomial functions. The approximation by interpolating Lagrange within four distinct measuring points is applied, using the Vandermonde matrix at each analyzed point. Approximation leads to truthful results, so it can be considered valid for the application of vibration analysis of material systems. The second part of the work realizes the approximation of the presentation of the vibrational rations of a real system with 10-degree polynomial functions, for four distinct cases of graphic alms.
Key words: mechanical vibrations, 10th degree polynomial functions, mathematical approximation
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