特性行列の実験的決定による系の同定 : 第9報,構造的モデル化制約条件の提案

概要

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The purpose of this paper is to present an idea for forming modelling constraints among the elements of the spatial matrices : the stiffness matrix, damping matrix and mass matrix, according to the principle of dynamics. The mass matrix of a structure with many degrees of freedom can be transformed into their rigid mass matrices by using the vectors of their feasible rigid motions. The modelling constraints regarding mass matrices are formulated using a special relationship among the elements of the rigid mass matrix. The modelling constraints of involving stiffness and damping matrices are formulated using the principle that the strain must be zero in all area of structures under their feasible rigid motions. By using the modelling constraints, multiple rigid natural modes can be identified even in the case of using FRFs under single-point excitation.
一般社団法人日本機械学会の論文
1995-04-25