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Konferenzveröffentlichung
The logarithmic finite element method
(International Center for Numerical Methods in Engineering (CIMNE), 2018)
The Logarithmic finite element (LogFE) method extends the Ritz-Galerkin method to approximations on a non-linear finite-dimensional manifold in the infinitedimensional solution space. Formulating the interpolant on the logarithmic space allows for a novel treatment of the rotational component of the deformation, and induces a strong coupling between rotations and translations. The Logarithmic finite element method provides
a transformation of the initial configuration that is not restricted to an isoparametric formulation.
Konferenzveröffentlichung
Beyond Ritz-Galerkin: Finite element approximations on a manifold in the configuration space [Abstract]
(Institute of Structural Analysis and Antiseismic Research, School of Civil Engineering, National Technical University of Athens (NTUA), 2016)
An extension of the Ritz-Galerkin method, based on finding approximations on a finite-dimensional manifold of functions (i.e., not a linear subspace) in the infinite-dimensional exact configuration space, will be presented. This new approach is particularly efficient in computing geometrically exact solutions for problems involving large rotations.
Konferenzveröffentlichung
Coupling atomistic models with continuous finite beam elements [Abstract]
(Institute of Structural Analysis and Antiseismic Research, School of Civil Engineering, National Technical University of Athens (NTUA), 2016)
Concurrent simulations of atomistic (discrete) and continuum models are one key to perform static calculations of large atomistic structures. Occurring ghost forces at the interfaces between discrete (atomistic) and continuous regions are a major challenge for the definition of such interfaces. The so called virtual projection method [1] is a class of force-based a/c schemes which reduce (or even avoid) ghost forces. This class of coupling schemes is able to deal with atomistic models consisting of bonded, multi-body ...
Konferenzveröffentlichung
The Bicycle, a climate change mitigation tool in Latin America
(Kassel, Universität Kassel, Fachbereich Bauingenieur- und Umweltingenieurwesen, Fachgebiet Radverkehr und Nahmobilität, 2022)
Konferenzveröffentlichung
Sustainability in traffic systems: Indicators for a systemic view in science an planning
(Kassel, Universität Kassel, Fachbereich Bauingenieur- und Umweltinsgenieurwesen, Fachgebiet Radverkehr und Nahmobilität, 2022)
Konferenzveröffentlichung
Design of flexible pavements with cold recycled asphalt bases: Comparison of five national approaches
(2020)
The Application of reclaimed asphalt is becoming increasingly important in the European Road Network. Beside the conventional recycling options (i. e. hot asphalt mixtures), cold recycling has been successfully applied in numerous road structures within the secondary and the main road network. However, the standard design procedures for common pavement materials as well as the approaches for cold recycling differ from one country to another. The comparison of five national pavement design procedures shows, that ...
Konferenzveröffentlichung
The logarithmic finite element method: Approximation on a manifold in the configuration space
(International Association for Computational IACM, 2018)