Blar i NTNU Open på forfatter "Ambati, Marreddy"
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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 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 ...