Theory of Functional Connections Subject to Shear-Type and Mixed Derivatives

This study extends the functional interpolation framework, introduced by the Theory of Functional Connections, initially introduced for functions, derivatives, integrals, components, and any linear combination of them, to constraints made of shear-type and/or mixed derivatives. The main motivation c...

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Main Author: Daniele Mortari
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/10/24/4692
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author Daniele Mortari
author_facet Daniele Mortari
author_sort Daniele Mortari
collection DOAJ
description This study extends the functional interpolation framework, introduced by the Theory of Functional Connections, initially introduced for functions, derivatives, integrals, components, and any linear combination of them, to constraints made of shear-type and/or mixed derivatives. The main motivation comes from differential equations, often appearing in fluid dynamics and structures/materials problems that are subject to shear-type and/or mixed boundary derivatives constraints. This is performed by replacing these boundary constraints with equivalent constraints, obtained using indefinite integrals. In addition, this study also shows how to validate the constraints’ consistency when the problem involves the unknown constants of integrations generated by indefinite integrations.
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spelling doaj.art-43d016474a914135acf525f325553dc02023-11-24T16:28:04ZengMDPI AGMathematics2227-73902022-12-011024469210.3390/math10244692Theory of Functional Connections Subject to Shear-Type and Mixed DerivativesDaniele Mortari0Aerospace Engineering, Texas A&M University, 3141 TAMU, College Station, TX 77843, USAThis study extends the functional interpolation framework, introduced by the Theory of Functional Connections, initially introduced for functions, derivatives, integrals, components, and any linear combination of them, to constraints made of shear-type and/or mixed derivatives. The main motivation comes from differential equations, often appearing in fluid dynamics and structures/materials problems that are subject to shear-type and/or mixed boundary derivatives constraints. This is performed by replacing these boundary constraints with equivalent constraints, obtained using indefinite integrals. In addition, this study also shows how to validate the constraints’ consistency when the problem involves the unknown constants of integrations generated by indefinite integrations.https://www.mdpi.com/2227-7390/10/24/4692functional interpolationdifferential equationsnumerical methods
spellingShingle Daniele Mortari
Theory of Functional Connections Subject to Shear-Type and Mixed Derivatives
Mathematics
functional interpolation
differential equations
numerical methods
title Theory of Functional Connections Subject to Shear-Type and Mixed Derivatives
title_full Theory of Functional Connections Subject to Shear-Type and Mixed Derivatives
title_fullStr Theory of Functional Connections Subject to Shear-Type and Mixed Derivatives
title_full_unstemmed Theory of Functional Connections Subject to Shear-Type and Mixed Derivatives
title_short Theory of Functional Connections Subject to Shear-Type and Mixed Derivatives
title_sort theory of functional connections subject to shear type and mixed derivatives
topic functional interpolation
differential equations
numerical methods
url https://www.mdpi.com/2227-7390/10/24/4692
work_keys_str_mv AT danielemortari theoryoffunctionalconnectionssubjecttosheartypeandmixedderivatives