Novel H (symCurl)-conforming finite elements for the relaxed micromorphic sequence

A Sky, M Neunteufel, P Lewintan, A Zilian… - Computer Methods in …, 2024 - Elsevier
In this work we construct novel H (sym Curl)-conforming finite elements for the recently
introduced relaxed micromorphic sequence, which can be considered as the completion of …

Symmetric unisolvent equations for linear elasticity purely in stresses

A Sky, A Zilian - International Journal of Solids and Structures, 2024 - Elsevier
In this work we introduce novel stress-only formulations of linear elasticity with special
attention to their approximate solution using weighted residual methods. We present four …

Intrinsic mixed-dimensional beam-shell-solid couplings in linear Cosserat continua via tangential differential calculus

A Sky, JS Hale, A Zilian, SPA Bordas, P Neff - Computer Methods in …, 2024 - Elsevier
We present an approach to the coupling of mixed-dimensional continua by employing the
mathematically enriched linear Cosserat micropolar model. The kinematical reduction of the …

[HTML][HTML] Method of matched sections as a beam-like approach for plate analysis

I Orynyak, K Danylenko - Finite Elements in Analysis and Design, 2024 - Elsevier
A new numerical method in application to the plate problem is suggested. It starts from
consideration of the rectangular elements, each operating by 6 beam-like parameters: four …

An essay on deformation measures in isotropic thin shell theories: Bending versus curvature

ID Ghiba, P Lewintan, A Sky… - … and Mechanics of Solids, 2024 - journals.sagepub.com
It has become commonplace for the stored energy function of any realistic shell model to
align “within first order” with the classical Koiter membrane-bending (flexural) shell model. In …

Modeling Challenges and Limitation Principles of Reissner's Mixed Approaches to Laminates

L Demasi, M D'Ottavio - AIAA Journal, 2025 - arc.aiaa.org
Displacement-based formulations for composite structures are directly linked to the
functional called the Principle of Virtual Displacements and present the minimum number of …

Formulae and transformations for simplicial tensorial finite elements via polytopal templates

A Sky, M Neunteufel, JS Hale, A Zilian - arXiv preprint arXiv:2405.10402, 2024 - arxiv.org
We introduce a unified method for constructing the basis functions of a wide variety of
partially continuous tensor-valued finite elements on simplices using polytopal templates …

Novel -conforming elements on regular triangulations and Clough--Tocher splits for the planar relaxed micromorphic model

A Sky, M Neunteufel, P Lewintan, P Gourgiotis… - arXiv preprint arXiv …, 2024 - arxiv.org
In this work we present a consistent reduction of the relaxed micromorphic model to its
corresponding two-dimensional planar model, such that its capacity to capture …

Uniformly -stable elements for the elasticity complex

FRA Aznaran, K Hu, C Parker - arXiv preprint arXiv:2409.17414, 2024 - arxiv.org
For the discretization of symmetric, divergence-conforming stress tensors in continuum
mechanics, we prove inf-sup stability bounds which are uniform in polynomial degree and …

Numerical analysis of the stress‐based formulation of linear elasticity

A Sky, A Zilian - PAMM, 2024 - Wiley Online Library
Abstract The Beltrami–Michell equations of linear elasticity differ from the Navier–Cauchy
equations, in that the primary field in former equations is the stress tensor rather than the …