Anisotropic strain gradient thermoelasticity for cellular structures: Plate models, homogenization and isogeometric analysis

S Khakalo, J Niiranen - Journal of the Mechanics and Physics of Solids, 2020 - Elsevier
For three-dimensional cellular plate-like structures with a triangular (extruded lattice)
microarchitecture, the article develops a pair of two-scale plate models relying on the …

Kirchhoff–Love shells within strain gradient elasticity: Weak and strong formulations and an H3-conforming isogeometric implementation

V Balobanov, J Kiendl, S Khakalo, J Niiranen - Computer Methods in …, 2019 - Elsevier
A strain gradient elasticity model for shells of arbitrary geometry is derived for the first time.
The Kirchhoff–Love shell kinematics is employed in the context of a one-parameter …

A phase-field fracture model based on strain gradient elasticity

R Makvandi, S Duczek, D Juhre - Engineering fracture mechanics, 2019 - Elsevier
The conventional phase-field crack propagation models utilize the classical Cauchy
continuum theory to approximate the elastic energy contribution to the total potential energy …

[HTML][HTML] Strain gradient elasto-plasticity model: 3D isogeometric implementation and applications to cellular structures

S Khakalo, A Laukkanen - Computer Methods in Applied Mechanics and …, 2022 - Elsevier
In the present work, we combine Mindlin's strain gradient elasticity theory and Gudmundson–
Gurtin–Anand strain gradient plasticity theory to form a unified framework. The gradient …

A phase field model for fracture based on the strain gradient elasticity theory with hybrid formulation

B Zhang, J Luo - Engineering Fracture Mechanics, 2021 - Elsevier
In this paper, a novel phase field (PF) model for fracture is developed in the framework of
strain gradient elasticity. The strain energy decomposition methods initially proposed for …

[PDF][PDF] p-Extension of C0 continuous mixed finite elements for plane strain gradient elasticity

S Markolefas, TK Papathanasiou… - Archives of …, 2019 - researchgate.net
A mixed finite element formulation is developed for the general 2D plane strain, linear
isotropic gradient elasticity problem. Form II of dipolar strain gradient theory for micro …

Overcoming stress singularities: combining phase-field modelling of fracture, strain gradient theory, and isogeometric analysis

R Makvandi - 2021 - repo.bibliothek.uni-halle.de
Originally, the classical continuum mechanics theories are supposed to determine
deformations in ranges from millimeter to meter at the so-called macroscopic scales. In fact …