Print Email Facebook Twitter Finite element based analysis and validation for nonlinear structural dynamics Title Finite element based analysis and validation for nonlinear structural dynamics Author Markestein, Koen (TU Delft Mechanical, Maritime and Materials Engineering) Contributor Alijani, F. (mentor) Aragon, A.M. (mentor) Degree granting institution Delft University of Technology Date 2018-11-30 Abstract Analysing nonlinear vibrations of any finite element model containing a considerable number of degrees of freedom requires extensive computational resources. For a time-dependent nonlinear analysis, numerous iterations and time increments are required to compute steady statesolutions. ThisworkproposesamethodforconstructingafiniteelementbasedReduced Order Model (ROM) to analyse nonlinear vibrations of thin-walled structures. The reduction utilizes tensor algebra with modal superposition to construct a set of coupled nonlinear equations. After verifying results with the literature, reduced order modelling is applied to the analysis of non-rigid origami structures. To that end, shell elements are combined with torsional springs on crease lines. In addition, both linear and nonlinear experiments are conducted with a Miura-Ori patterned sheet to evaluate the performance of the numerical model. Subject Nonlinear dynamicsOrigamiFinite Element AnalysisReduced order modelShell StructuresEngineering Dynamics To reference this document use: http://resolver.tudelft.nl/uuid:6a769d64-496e-4e89-b7b0-fb7a173aaa37 Embargo date 2019-11-30 Part of collection Student theses Document type master thesis Rights © 2018 Koen Markestein Files PDF mscThesis_Koen_Markestein ... 251199.pdf 34.11 MB Close viewer /islandora/object/uuid:6a769d64-496e-4e89-b7b0-fb7a173aaa37/datastream/OBJ/view