Blar i NTNU Open på forfatter "Kiendl, Josef"
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Kirchhoff-Love shells within strain gradient elasticity: weak and strong formulations and an H3-conforming isogeometric implementation
Balobanov, Viacheslav; Kiendl, Josef; Khakalo, Sergei; Niiranen, Jarkko (Journal article; Peer reviewed, 2018)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 modification of Mindlin’s strain gradient ... -
Mechanical and Thermal Simulations of 3D Printed Structures and the 3D Printing Process
Ramos, Nathalie (Doctoral theses at NTNU;2023:311, Doctoral thesis, 2023)Additive manufacturing (AM), often referred to as three-dimensional (3D) printing, has become one the fastest growing manufacturing technologies across a variety of engineering fields after transitioning from being a ... -
Penalty coupling of non-matching isogeometric Kirchhoff-Love shell patches with application to composite wind turbine blades
Herrema, Austin; Emily, Johnson; Davide, Proserpio; Wu, M.C.H.; Kiendl, Josef; Hsu, Ming-Chen (Journal article; Peer reviewed, 2018)Isogeometric analysis (IGA) has been a particularly impactful development in the realm of Kirchhoff–Love thin-shell analysis because the high-order basis functions employed naturally satisfy the requirement of C 1 continuity. ... -
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 ... -
Seamless integration of design and Kirchhoff–Love shell analysis using analysis-suitable unstructured T-splines
Casquero, Hugo; Wei, Xiaodong; Toshniwal, Deepesh; Li, Angran; Hughes, Thomas; Kiendl, Josef; Zhang, Yongjie (Peer reviewed; Journal article, 2020)Analysis-suitable T-splines (ASTS) including both extraordinary points and T-junctions are used to solve Kirchhoff–Love shell problems. Extraordinary points are required to represent surfaces with arbitrary topological ... -
Variational formulations, model comparisons and numerical methods for Euler–Bernoulli micro- and nano-beam models
Niiranen, Jarkko; Balobanov, Viacheslav; Kiendl, Josef; Hosseini, S. B. (Journal article; Peer reviewed, 2017)As a first step, variational formulations and governing equations with boundary conditions are derived for a pair of Euler–Bernoulli beam bending models following a simplified version of Mindlin’s strain gradient elasticity ...