Blar i NTNU Open på forfatter "De Lorenzis, Laura"
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An isogeometric analysis formulation for red blood cell electro-deformation modeling
Nodargi, Nicola; Kiendl, Josef; Bisegna, Paolo; Caselli, Federica; De Lorenzis, Laura (Journal article; Peer reviewed, 2018)An isogeometric analysis formulation for simulating red blood cell (RBC) electro-deformationis presented. Electrically-induced cell deformation experiments are receiving increasing attention as an attractive strategy for ... -
An isogeometric collocation method for frictionless contact of Cosserat rods
Weeger, Oliver; Narayanan, Bharath; De Lorenzis, Laura; Kiendl, Josef; Dunn, Martin L. (Journal article; Peer reviewed, 2017)A frictionless contact formulation for spatial rods is developed within the framework of isogeometric collocation. The structural mechanics is described by the Cosserat theory of geometrically nonlinear spatial rods. The ... -
Explicit isogeometric collocation for the dynamics of three-dimensional beams undergoing finite motions
Marino, Enzo; Kiendl, Josef; De Lorenzis, Laura (Journal article; Peer reviewed, 2018)We initiate the study of three-dimensional shear-deformable geometrically exact beam dynamics through explicit isogeometric collocation methods. The formulation we propose is based on a natural combination of the chosen ... -
A framework for efficient isogeometric computations of phase-field brittle fracture in multipatch shell structures
Proserpio, Davide; Ambati, Marreddy; De Lorenzis, Laura; Kiendl, Josef (Peer reviewed; Journal article, 2020)We present a computational framework for applying the phase-field approach to brittle fracture efficiently to complex shell structures. The momentum and phase-field equations are solved in a staggered scheme using isogeometric ... -
Isogeometric collocation for implicit dynamics of three-dimensional beams undergoing finite motions
Marino, Enzo; Kiendl, Josef; De Lorenzis, Laura (Journal article; Peer reviewed, 2019)We propose a novel approach to the implicit dynamics of shear-deformable geometrically exact beams, based on the isogeometric collocation method combined with the Newmark time integration scheme extended to the rotation ... -
Isogeometric collocation for the Reissner–Mindlin shell problem
Kiendl, Josef; Marino, Enzo; De Lorenzis, Laura (Journal article; Peer reviewed, 2017)We present an isogeometric collocation formulation for the Reissner-Mindlin shell problem. After recalling the necessary basics on differential geometry and the shell governing equations, we show that the standard approach ... -
Isogeometric Kirchhoff-Love shell formulation for elasto-plasticity
Ambati, Marreddy; Kiendl, Josef; De Lorenzis, Laura (Journal article; Peer reviewed, 2018)An isogeometric thin shell formulation allowing for large-strain plastic deformation is presented. A stress-based approach is adopted, which means that the constitutive equations are evaluated at different integration ... -
Phase-field description of brittle fracture in plates and shells
Kiendl, Josef; Ambati, Marreddy; De Lorenzis, Laura; Gomez, Hector; Reali, Alessandro (Journal article; Peer reviewed, 2016)We present an approach for phase-field modeling of fracture in thin structures like plates and shells, where the kinematics is defined by midsurface variables. Accordingly, the phase field is defined as a two-dimensional ... -
Phase-field simulation of ductile fracture in shell structures
Proserpio, Davide; Ambati, Marreddy; De Lorenzis, Laura; Kiendl, Josef (Peer reviewed; Journal article, 2021)In this paper, a computational framework for simulating ductile fracture in multipatch shell structures is presented. A ductile fracture phase-field model at finite strains is combined with an isogeometric Kirchhoff-Love ...