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Elastic spherical inhomogeneity in an infinite elastic solid: an exact analysis by an engineering treatment of the problem based on the corresponding cavity solution

Amstutz, Hans ; Vormwald, Michael (2024)
Elastic spherical inhomogeneity in an infinite elastic solid: an exact analysis by an engineering treatment of the problem based on the corresponding cavity solution.
In: Archive of Applied Mechanics, 2021, 91 (4)
doi: 10.26083/tuprints-00023442
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Elastic spherical inhomogeneity in an infinite elastic solid: an exact analysis by an engineering treatment of the problem based on the corresponding cavity solution
Language: English
Date: 18 March 2024
Place of Publication: Darmstadt
Year of primary publication: April 2021
Place of primary publication: Berlin ; Heidelberg
Publisher: Springer
Journal or Publication Title: Archive of Applied Mechanics
Volume of the journal: 91
Issue Number: 4
DOI: 10.26083/tuprints-00023442
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

In the present work, solutions are recapitulated according to the theory of elasticity for the deformations of an adhesive spherical inhomogeneity in an infinite matrix under remote uniform axial and axial-symmetrical radial tension. Stress fields in the inhomogeneity and at the interface in the matrix are provided, too. It is shown that the sphere is deformed to a spheroid under any of the loading cases considered. Due to the axial-symmetric setup of the problem, the deformation is fully described by the two displacement values at line segments on the principal axes of the spheroid. The displacements depend on the applied remote load and on two traction fields at the inhomogeneity-matrix interface. For any combination of inhomogeneity and matrix stiffness, the condition of compatibility of deformations yields a system of two linear equations with the two magnitudes of the tractions as unknowns. Thus, the problem is reduced to a formulation for solving a twofold statically indetermined structure. The system is solved and the exact solution of the general spherical inhomogeneity problem with differing stiffness in terms of Young’s moduli and Poisson’s ratios of inclusion and matrix is presented.

Uncontrolled Keywords: Spherical inhomogeneity, Elastic inhomogeneity, Stress analysis, Strain analysis
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-234426
Classification DDC: 600 Technology, medicine, applied sciences > 624 Civil engineering and environmental protection engineering
600 Technology, medicine, applied sciences > 690 Building and construction
Divisions: 13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics > Material Mechanics
Date Deposited: 18 Mar 2024 13:44
Last Modified: 11 Apr 2024 07:38
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23442
PPN: 517018381
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