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An Eshelby inclusion of arbitrary shape in a degenerate orthotropic elastic plane

2025· article· en· W4412983399 on OpenAlex

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affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueEuropean Journal of Mechanics - A/Solids · 2025
Typearticle
Languageen
FieldEngineering
TopicComposite Material Mechanics
Canadian institutionsUniversity of Alberta
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsOrthotropic materialDegenerate energy levelsInclusion (mineral)Plane (geometry)Materials scienceGeometryComposite materialClassical mechanicsMathematical analysisMathematicsPhysicsThermodynamicsQuantum mechanicsFinite element method

Abstract

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Using Suo’s complex variable formulation, we first derive a general solution to the plane problem of an infinite homogeneous degenerate orthotropic elastic plane containing an Eshelby inclusion of arbitrary shape undergoing uniform in-plane eigenstrains. The elastic field within the Eshelby inclusion is identified once the two polynomials representing the principal parts of the remote asymptotic behaviors of two auxiliary functions are determined. We next derive an explicit solution to the problem of an inclusion having an ( n +1)-fold axis of quasi-symmetry (with n ≥1) in an infinite degenerate orthotropic elastic material. The inclusion boundary has an ( n +1)-fold axis of symmetry in the z -plane, where z is the single complex variable appearing in Suo’s formulation, and is described by a four-term mapping function. The non-uniform distributions of the total strains and rigid body rotation within the quasi-symmetric inclusion are completely determined. We further prove that when n ≥2, the arithmetic mean of the Eshelby tensors at n +1 rotational symmetric points within the inclusion in the z -plane is equal to the constant Eshelby tensor within a special elliptical inclusion, the boundary of which is circular in the z -plane, and that it is independent of the rotation of the inclusion boundary in the z -plane.

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Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.555
Threshold uncertainty score0.981

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.008
GPT teacher head0.214
Teacher spread0.207 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it