METHOD FOR MEASURING NONHARMONIC PERIODIC EXCITATION FORCES IN NONLINEAR DAMPED SYSTEMS

摘要

PURPOSE: the structure that anharmonic wave periodical exciting force estimation method is provided the prediction life expectancy that arrives utilizes cut-in method, preparatory inverse problem. ;CONSTITUTION: a kind of nonlinear attenuation system carries out modeling nonlinear phase difference formula (S10). A kind of ODE is converted into equivalent Volterra entirety equation (S20). The nonlinear attenuation and restoring force button of a kind of approximate solution pass through regularization method (S30). Determine that the blue moral weber regularization method of optimal repeat number passes through L-curve criterion (S40). ;The 2013 of copyright KIPO submissions;The nonlinear attenuation system of [Reference numerals] (S10) modeling is as nonlinear phase eikonal equation; (S20) it is converted into ODE and is converted into a Volterra entirety equation of equal value; (S30) external loading for deducting approximate solution passes through regularization method; (S40) the blue moral weber regularization method or best regular coefficient for determining optimum number of multiple pass through L-curve Tikhonov regularization in standard regularization method