Print Email Facebook Twitter Sequentially linear analysis for simulating brittle failure Title Sequentially linear analysis for simulating brittle failure Author van de Graaf, A.V. (TU Delft Applied Mechanics) Contributor Rots, J.G. (promotor) Hendriks, M.A.N. (promotor) Degree granting institution Delft University of Technology Date 2017-05-02 Abstract The numerical simulation of brittle failure at structural level with nonlinear finiteelement analysis (NLFEA) remains a challenge due to robustness issues. We attribute these problems to the dimensions of real-world structures combined with softening behavior and negative tangent stiffness at local level which may lead to non-convergence, i.e. the applied external loads are not in equilibrium with the internal forces. Also multiple cracks that compete to “survive” and the possibility of bifurcations, i.e. the existence of multiple equilibrium paths, contribute to these problems. However, in engineering practice robust numerical methods become increasingly important. For example, NLFEA may be used to determine the actual load bearing capacity of existing concrete bridges in order to assess whether these meet the current regulations. Also for the prediction of building damage due to underground construction or seismic action NLFEA may be employed. Subject Sequentially linear analysisBrittle failureFinite element analysisNon-proportional loadingCoulomb frictionSaw-tooth law To reference this document use: https://doi.org/10.4233/uuid:dd9ea945-136c-4b74-bae2-f1a8cf9a6ed9 ISBN 978-94-6186-799-5 Part of collection Institutional Repository Document type doctoral thesis Rights © 2017 A.V. van de Graaf Files PDF thesis_final_20170402.pdf 18.62 MB Close viewer /islandora/object/uuid:dd9ea945-136c-4b74-bae2-f1a8cf9a6ed9/datastream/OBJ/view