TRANSFORMER STACKED IRON CORE ELASTICITY MATRIX DETERMINATION METHOD AND VIBRATION ANALYSIS METHOD

A transformer stacked iron core elasticity matrix determination method including: acquiring a frequency spectrum of excitation noise; acquiring a frequency spectrum of excitation magnetostriction; calculating a frequency spectrum of a vibration response function when first and second provisional values of transverse elastic moduli are applied to an elasticity matrix; calculating a frequency spectrum of excitation vibration based on frequency spectrum data of the excitation magnetostriction and the frequency spectrum of the vibration response function; calculating a degree of coincidence between a frequency spectrum of noise and the frequency spectrum of the excitation vibration; calculating the degree of coincidence for each combination of the first provisional value and the second provisional value; and adopting the first and second provisional values as the transverse elastic moduli when the degree of coincidence is a local maximum value.