離散系の材料特性値逆問題に対する解析手法

概要

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This paper is concerned with material-property inverse problems, in which material properties of individual components of a discrete system are estimated using the response of the system to several sets of external input. Two inversion schemes were proposed for estimating the material properties : the [K] matrix method and {C} vector method. The [K] matrix method determined a stiffness matrix of the system for estimating material properties. The {C} vector method was based on the stiffness equations expressed in terms of the {C} vector whose components consist of parameters of material properties. Formulations were presented for estimating conductance and stiffness of components of trusslike structures. Constraints based on information on material properties can be introduced in the {C} vector method. Numerical simulations were made of the applications of the methods to the estimation of conductance of trusslike structures. It was shown that the proposed methods were applicable to the estimation of material properties of discrete systems. The proposed methods can be applied to continuous systems with minor modifications, when discretized equations using numerical schemes, such as the finite-element method and the boundary-element method, are used in the formulation.
一般社団法人日本機械学会の論文
1991-09-25