activity
20112026
most citedOn some fundamental misunderstandings in the indeterminate couple stress model. A comment on recent papers of A.R. Hadjesfandiari and G.F. Dargush

67 citations · 67 across the 9 of their papers we have counts for

collaborators

9 papers

math.AP2026

Polyconvexity for Cosserat nonlinear elasticity and nonlinear couple-stress theory

Diana Ciotir, Ionel-Dumitrel Ghiba, Patrizio Neff

We study a class of nonlinear elastic energies whose constitutive structure is naturally expressed in terms of a stretch variable but is not directly covered by the standard polyco…

physics.class-ph2025

Constitutive properties for isotropic energies in ideal nonlinear elasticity for solid materials: numerical evidences for invertibility and monotonicity in different stress-strain pairs

Ionel-Dumitrel Ghiba, Robert Martin, Marius Apetrii +1

As a service for the solid mechanics community we gather in this paper constitutive properties of a collective list of isotropic elastic energies for compressible materials. Of int…

math.AP2025

Propagation of Love waves in linear elastic isotropic Cosserat materials

Marius Apetrii, Emilian Bulgariu, Ionel-Dumitrel Ghiba +2

We investigate the propagation of Love waves in an isotropic half-space modelled as a linear {elastic isotropic} Cosserat material. To this aim, we show that a method commonly used…

math.AP2024

The Biot stress -- right stretch relation for the compressible Neo-Hooke-Ciarlet-Geymonat model and Rivlin's cube problem

Ionel-Dumitrel Ghiba, Franz Gmeineder, Sebastian Holthausen +2

The aim of the paper is to recall the importance of the study of invertibility and monotonicity of stress-strain relations for investigating the non-uniqueness and bifurcation of h…

math.AP2023

Rayleigh waves in isotropic elastic materials with micro-voids

Emilian Bulgariu, Ionel-Dumitrel Ghiba, Hassam Khan +1

In this paper, we show that a general method introduced by Fu and Mielke allows to give a complete answer on the existence and uniqueness of a subsonic solution describing the prop…

math.AP2023

Explicit formula for the Gamma-convergence homogenized quadratic curvature energy in isotropic Cosserat shell models

Maryam Mohammadi Saem, Emilian Bulgariu, Ionel-Dumitrel Ghiba +1

We show how to explicitly compute the homogenized curvature energy appearing in the isotropic -limit for flat and for curved initial configuration Cosserat shell models, when a…