実験データ参照による有限要素モデルの改良 : 物性定数による感度の考慮

概要

論文の詳細を見る
This paper presents a practical application of a method for correction of finite-element models to an actual component, called a "center beam", of automotive bodies. The applied method for correction of finite-element models is improved from a method which was previously proposed by the authors, by introducing sensitivities of natural frequencies and natural modes of interest with respect to not only thicknesses of finite elements but also material constants. The initial finite-element model of the specimen was successfully corrected, or improved in other words, with respect to the dynamic characteristics up to over 200 Hz by referring some of the lowest natural frequencies and natural modes to the experimentally obtained modal parameters under the free-free boundary conditions. It was certified that the corrected finite-element model was able to represent its dynamic characteristics well, even under boundary conditions different from the free-free conditions. From the certified results, it can be said that the correction is valid in terms of the physical considerations.
一般社団法人日本機械学会の論文
1992-10-25