TY - CHAP
A1 - Alalade, Muyiwa
A1 - Kafle, Binod
A1 - Wuttke, Frank
A1 - Lahmer, Tom
ED - Gürlebeck, Klaus
ED - Lahmer, Tom
T1 - CALIBRATION OF CYCLIC CONSTITUTIVE MODELS FOR SOILS BY OSCILLATING FUNCTIONS
T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar
N2 - In order to minimize the probability of foundation failure resulting from cyclic action on structures, researchers have developed various constitutive models to simulate the foundation response and soil interaction as a result of these complex cyclic loads. The efficiency and effectiveness of these model is majorly influenced by the cyclic constitutive parameters. Although a lot of research is being carried out on these relatively new models, little or no details exist in literature about the model based identification of the cyclic constitutive parameters. This could be attributed to the difficulties and complexities of the inverse modeling of such complex phenomena. A variety of optimization strategies are available for the solution of the sum of least-squares problems as usually done in the field of model calibration. However for the back analysis (calibration) of the soil response to oscillatory load functions, this paper gives insight into the model calibration challenges and also puts forward a method for the inverse modeling of cyclic loaded foundation response such that high quality solutions are obtained with minimum computational effort. Therefore model responses are produced which adequately describes what would otherwise be experienced in the laboratory or field.
KW - Angewandte Informatik
KW - Angewandte Mathematik
KW - Building Information Modeling
KW - Computerunterstütztes Verfahren
KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications
Y1 - 2015
U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-27932
SN - 1611-4086
ER -
TY - JOUR
A1 - Alalade, Muyiwa
A1 - Nguyen-Tuan, Long
A1 - Wuttke, Frank
A1 - Lahmer, Tom
T1 - Damage identification in gravity dams using dynamic coupled hydro-mechanical XFEM
JF - International Journal of Mechanics and Materials in Design
N2 - Damage identification in gravity dams using dynamic coupled hydro-mechanical XFEM.
KW - Angewandte Mathematik
KW - Stochastik
KW - Strukturmechanik
Y1 - 2017
U6 - http://dx.doi.org/10.25643/bauhaus-universitaet.3596
SP - 1
EP - 19
ER -
TY - CHAP
A1 - Khosravian, Reza
A1 - Wuttke, Frank
ED - Gürlebeck, Klaus
ED - Lahmer, Tom
T1 - QUALITATIVE INVESTIGATION OF THE EFFECT OF SOIL MODELING APPROACH ON DYNAMIC BEHAVIOR OF A SMALL-SCALE 2-DOF STRUCTURE WITH PILE FOUNDATION
T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar
N2 - Known as a sophisticated phenomenon in civil engineering problems, soil structure interaction has been under deep investigations in the field of Geotechnics. On the other hand, advent of powerful computers has led to development of numerous numerical methods to deal with this phenomenon, resulting in a wide variety of methods trying to simulate the behavior of the soil stratum. This survey studies two common approaches to model the soil’s behavior in a system consisting of a structure with two degrees of freedom, representing a two-storey frame structure made of steel, with the column resting on a pile embedded into sand in laboratory scale. The effect of soil simulation technique on the dynamic behavior of the structure is of major interest in the study. Utilized modeling approaches are the so-called Holistic method, and substitution of soil with respective impedance functions.
KW - Angewandte Informatik
KW - Angewandte Mathematik
KW - Building Information Modeling
KW - Computerunterstütztes Verfahren
KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications
Y1 - 2015
U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-28080
SN - 1611-4086
ER -
TY - JOUR
A1 - Nasser, Mourad
A1 - Schwedler, Michael
A1 - Wuttke, Frank
A1 - Könke, Carsten
T1 - Seismic analysis of structural response using simplified soil-structure interaction models
JF - Bauingenieur, D-A-CH-Mitteilungsblatt
N2 - Seismic analysis of structural response using simplified soil-structure interaction models
KW - Angewandte Mathematik
KW - Strukturmechanik
Y1 - 2010
ER -
TY - CHAP
A1 - Nasser, Mourad
A1 - Schwedler, Michael
A1 - Wuttke, Frank
A1 - Könke, Carsten
A1 - Schanz, Tom
T1 - Dynamic Soil-Structure Interaction Models: Theory and Application
N2 - Dynamic Soil-Structure Interaction Models: Theory and Application
KW - Angewandte Mathematik
KW - Strukturmechanik
Y1 - 2009
ER -
TY - CHAP
A1 - Stutz, Henning
A1 - Wuttke, Frank
ED - Gürlebeck, Klaus
ED - Lahmer, Tom
ED - Werner, Frank
T1 - EVALUATION OF SOIL-STRUCTURE INTERACTION MODELS USING DIFFERENT MODEL-ROBUSTNESS APPROACHES
T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar
N2 - The aim of this study is to show an application of model robustness measures for soilstructure interaction (henceforth written as SSI) models. Model robustness defines a measure for the ability of a model to provide useful model answers for input parameters which typically have a wide range in geotechnical engineering. The calculation of SSI is a major problem in geotechnical engineering. Several different models exist for the estimation of SSI. These can be separated into analytical, semi-analytical and numerical methods. This paper focuses on the numerical models of SSI specific macro-element type models and more advanced finite element method models using contact description as continuum or interface elements. A brief description of the models used is given in the paper. Following this description, the applied SSI problem is introduced. The observed event is a static loaded shallow foundation with an inclined load. The different partial models to consider the SSI effects are assessed using different robustness measures during numerical application. The paper shows the investigation of the capability to use these measures for the assessment of the model quality of SSI partial models. A variance based robustness and a mathematical robustness approaches are applied. These different robustness measures are used in a framework which allows also the investigation of computational time consuming models. Finally the result shows that the concept of using robustness approaches combined with other model–quality indicators (e.g. model sensitivity or model reliability) can lead to unique model–quality assessment for SSI models.
KW - Angewandte Informatik
KW - Angewandte Mathematik
KW - Computerunterstütztes Verfahren
Y1 - 2012
U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-27878
UR - http://euklid.bauing.uni-weimar.de/ikm2012
SN - 1611-4086
ER -