Method for the experimental determination of a stiffness matrix, a mass matrix and / or a damping matrix of a mechanical object

摘要

A method for the experimental determination of the real entries of a stiffness matrix, a mass matrix and / or an attenuation matrix of at least one subarea of a mechanical object is provided, wherein at least one vibration sensor is arranged on the at least one subarea of the object during a proper use of the object by means of the during at least one vibration sensor, the operating vibrations of the at least one partial area of the object are detected, modal parameters are derived from the detected operating vibrations, the object is mechanically modified, during a proper use of the modified object by means of the at least one vibration sensor, the modified operating vibrations of the at least one partial area of the modified object are detected, modal parameters modified from the detected modified operating vibrations are derived, from the modal parameters and from d Modal parameters scaled according to modified modal parameters are determined and the scaled modal parameters are used to deduce the real entries of the stiffness matrix, the mass matrix and / or the damping matrix.