The Pseudo-Direct Numerical Simulation Method considered as a Reduced Order ModelSpringer Science and Business Media LLC - Tập 9 Số 1
Sergio Idelsohn, Juan M. Giménez, Norberto M. Nigro
AbstractThe multiscale method called Pseudo-Direct Numerical Simulation (P-DNS) is presented as a Reduced Order Model (ROM) aiming to solve problems obtaining similar accuracy to a solution with many degrees of freedom (DOF). The theoretical basis of P-DNS is other than any standard ROM. However, from a methodological point of view, P-DNS shares the idea of an offl...... hiện toàn bộ
A non-invasive node-based form finding approach with discretization-independent target configurationSpringer Science and Business Media LLC - Tập 5 - Trang 1-18 - 2018
Michael Caspari, Philipp Landkammer, Paul Steinmann
Form finding is used to optimize the shape of a semi-finished product, i.e. the material configuration in a forming process. The geometry of the semi-finished product is adapted so that the computed spatial configuration corresponds to a prescribed target spatial configuration. Differences between these two configurations are iteratively minimized. The algorithm works non-invasively, thus there is...... hiện toàn bộ
Dimension independent data sets approximation and applications to classificationSpringer Science and Business Media LLC - Tập 11 - Trang 1-20 - 2024
Patrick Guidotti
We revisit the classical kernel method of approximation/interpolation theory in a very specific context from the particular point of view of partial differential equations. The goal is to highlight the role of regularization by casting it in terms of actual smoothness of the interpolant obtained by the procedure. The latter will be merely continuous on the data set but smooth otherwise. While the ...... hiện toàn bộ
An extension of assumed stress finite elements to a general hyperelastic frameworkSpringer Science and Business Media LLC - Tập 6 - Trang 1-22 - 2019
Nils Viebahn, Jörg Schröder, Peter Wriggers
Assumed stress finite elements are known for their extraordinary good performance in the framework of linear elasticity. In this contribution we propose a mixed variational formulation of the Hellinger–Reissner type for hyperelasticity. A family of hexahedral shaped elements is considered with a classical trilinear interpolation of the displacements and different piecewise discontinuous interpolat...... hiện toàn bộ
Real-world application of a discrete feedback control system for flexible biogas productionSpringer Science and Business Media LLC - Tập 10 - Trang 1-27 - 2023
Lingga Aksara Putra, Bernhard Huber, Matthias Gaderer
Using renewable energy is increasingly prevalent as part of a global effort to safeguard the environment, with a reduction in
$${\mathrm{CO}}_{2}$$
being one of the primary objectives. A biogas plant provides an opportunity to produce green energy, but its profitability prevents it from being util...... hiện toàn bộ
Improving collapsibility robustness of an EPS-CD by means of simulation and six sigmaSpringer Science and Business Media LLC - Tập 7 - Trang 1-19 - 2020
Didac Costas Muñoz, Michał Majzel
Steering columns for column assist Electric Steering are one of the main elements of the passive safety restraint system in a passenger vehicle. It is designed to collapse applying an optimized ride down force to reduce chest and head injuries of the driver during a frontal crash event, making this requirement one of the most important ones for its development. The system crash response is generat...... hiện toàn bộ
One-way coupled fluid–beam interaction: capturing the effect of embedded slender bodies on global fluid flow and vice versaSpringer Science and Business Media LLC - Tập 9 - Trang 1-30 - 2022
Nora Hagmeyer, Matthias Mayr, Ivo Steinbrecher, Alexander Popp
This work addresses research questions arising from the application of geometrically exact beam theory in the context of fluid-structure interaction (FSI). Geometrically exact beam theory has proven to be a computationally efficient way to model the behavior of slender structures while leading to rather well-posed problem descriptions. In particular, we propose a mixed-dimensional embedded finite ...... hiện toàn bộ
A continuum model for slip transfer at grain boundariesSpringer Science and Business Media LLC - Tập 7 - Trang 1-19 - 2020
Claude Fressengeas, Manas V. Upadhyay
Using a continuous representation of dislocations in elastoplastic polycrystals, we investigate slip transfer at grain boundaries by assessing the compatibility of the slip system shear rates with tangential continuity of the plastic distortion rate tensor at these interfaces. Fulfillment of this tangential continuity condition is needed for consistency of the continuous description of dislocation...... hiện toàn bộ