Inverse analysis method for identification of local elastic properties by using displacement data

Muneo Hori, Kenji Oguni

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This chapter presents a new inverse analysis method of finding local elastic moduli from displacement data for a heterogeneous and anisotropic elastic body in state of plane stress or strain. The method chooses a small block by connecting points at which displacement is measured and analyzes its deformation to determine elastic moduli separately from the rest of the body. The procedures of the elasticity inversion are developed with some techniques to exclude measurement errors from the displacement data. It is demonstrated in numerical simulation that the elasticity inversion is able to determine local elastic moduli accurately, when displacement data of sufficient quantity and quality is given. The limitations in applying the elasticity inversion: (1) only relative values are found, (2) discretization errors cannot be fully removed from data, and (3) the prediction becomes less accurate as less smooth displacement fields are used.

元の言語English
ホスト出版物のタイトルInverse Problems in Engineering Mechanics IV
出版者Elsevier Ltd
ページ111-119
ページ数9
ISBN(印刷物)9780080442686
DOI
出版物ステータスPublished - 2003 11
外部発表Yes

ASJC Scopus subject areas

  • Engineering(all)

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  • これを引用

    Hori, M., & Oguni, K. (2003). Inverse analysis method for identification of local elastic properties by using displacement data. : Inverse Problems in Engineering Mechanics IV (pp. 111-119). Elsevier Ltd. https://doi.org/10.1016/B978-008044268-6/50016-8