[图书][B] Compendium on gradient materials

A Bertram - 2023 - Springer
Although already suggested in the middle of the 19th century, have material models that
include higher gradients of the kinematical variables become a blossoming field of research …

Korn inequalities for incompatible tensor fields in three space dimensions with conformally invariant dislocation energy

P Lewintan, S Müller, P Neff - Calculus of Variations and Partial Differential …, 2021 - Springer
Abstract Let Ω⊂ R 3 be an open and bounded set with Lipschitz boundary and outward unit
normal ν. For 1< p<∞ we establish an improved version of the generalized L p-Korn …

Optimal incompatible Korn–Maxwell–Sobolev inequalities in all dimensions

F Gmeineder, P Lewintan, P Neff - Calculus of Variations and Partial …, 2023 - Springer
We characterise all linear maps A: R n× n→ R n× n such that, for 1≤ p< n, PL p∗(R n)≤ c (A
[P] L p∗(R n)+ Curl PL p (R n)) holds for all compactly supported P∈ C c∞(R n; R n× n) …

[HTML][HTML] Transparent anisotropy for the relaxed micromorphic model: macroscopic consistency conditions and long wave length asymptotics

G Barbagallo, A Madeo, MV d'Agostino, R Abreu… - International Journal of …, 2017 - Elsevier
In this paper, we study the anisotropy classes of the fourth order elastic tensors of the
relaxed micromorphic model, also introducing their second order counterpart by using a …

Korn-Maxwell-Sobolev inequalities for general incompatibilities

F Gmeineder, P Lewintan, P Neff - arXiv preprint arXiv:2212.13227, 2022 - arxiv.org
We establish a family of coercive Korn-type inequalities for generalised incompatible fields
in the superlinear growth regime under sharp criteria. This extends and unifies several …

Analytical solutions of the cylindrical bending problem for the relaxed micromorphic continuum and other generalized continua

G Rizzi, G Hütter, A Madeo, P Neff - Continuum Mechanics and …, 2021 - Springer
We consider the cylindrical bending problem for an infinite plate as modeled with a family of
generalized continuum models, including the micromorphic approach. The models allow to …

Real wave propagation in the isotropic-relaxed micromorphic model

P Neff, A Madeo, G Barbagallo… - … of the Royal …, 2017 - royalsocietypublishing.org
For the recently introduced isotropic-relaxed micromorphic generalized continuum model,
we show that, under the assumption of positive-definite energy, planar harmonic waves …

[HTML][HTML] From frequency-dependent models to frequency-independent enriched continua for mechanical metamaterials

G Rizzi, MV d'Agostino, J Voss, D Bernardini… - European Journal of …, 2024 - Elsevier
Mechanical metamaterials have recently gathered increasing attention for their uncommon
mechanical responses enabling unprecedented applications for elastic wave control. Many …

A constitutive condition for idealized isotropic Cauchy elasticity involving the logarithmic strain

MV d'Agostino, S Holthausen, D Bernardini… - arXiv preprint arXiv …, 2024 - arxiv.org
Following Hill and Leblond, the aim of our work is to show, for isotropic nonlinear elasticity, a
relation between the corotational Zaremba-Jaumann objective derivative of the Cauchy …

[HTML][HTML] Complete band gaps including non-local effects occur only in the relaxed micromorphic model

A Madeo, P Neff, MV d'Agostino… - Comptes Rendus …, 2016 - Elsevier
In this paper, we substantiate the claim implicitly made in previous works that the relaxed
micromorphic model is the only linear, isotropic, reversibly elastic, nonlocal generalized …