[HTML][HTML] A computational approach to identify the material parameters of the relaxed micromorphic model

M Sarhil, L Scheunemann, P Lewintan… - Computer Methods in …, 2024 - Elsevier
We determine the material parameters in the relaxed micromorphic generalized continuum
model for a given periodic microstructure in this work. This is achieved through a least …

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 …

Green's functions for the isotropic planar relaxed micromorphic model—Concentrated force and concentrated couple

P Gourgiotis, G Rizzi, P Lewintan, D Bernardini… - International Journal of …, 2024 - Elsevier
We derive the Green's functions (concentrated force and couple in an infinite space) for the
isotropic planar relaxed micromorphic model. Since the relaxed micromorphic model …

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 …

A global higher regularity result for the static relaxed micromorphic model on smooth domains

D Knees, S Owczarek, P Neff - Proceedings of the Royal Society of …, 2024 - cambridge.org
We derive a global higher regularity result for weak solutions of the linear relaxed
micromorphic model on smooth domains. The governing equations consist of a linear elliptic …

Global regularity in a nonlinear relaxed micromorphic continuum on Lipschitz domains

D Knees, S Owczarek, P Neff - Calculus of Variations and Partial …, 2025 - Springer
In this paper, we investigate the global higher regularity properties of weak solutions for a
linear elliptic system coupled with a nonlinear Maxwell-type system defined on Lipschitz …

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 …

Global regularity for a physically nonlinear version of the relaxed micromorphic model on Lipschitz domains

D Knees, S Owczarek, P Neff - arXiv preprint arXiv:2403.17451, 2024 - arxiv.org
In this paper, we investigate the global higher regularity properties of weak solutions for a
linear elliptic system coupled with a nonlinear Maxwell-type system defined on Lipschitz …

The isotropic relaxed micromorphic model in polar coordinates and its application to an elastostatic axisymmetric extension problem

E Ghavanloo, P Neff - arXiv preprint arXiv:2411.18213, 2024 - arxiv.org
In this paper, we consider the isotropic relaxed micromorphic model in polar coordinates
and use this representation to solve explicitly an elastostatic axisymmetric extension …