@inproceedings{Volkova,
  author    = {Volkova, Viktorija},
  title     = {APPLICTION OF THE PHASE TRAJECTORIES MAPPING TO IDENTIFICATION},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3032},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30329},
  pages     = {7},
  abstract  = {The reduction of oscillation amplitudes of structural elements is necessary not only for maintenance of their durability and longevity but also for elimination of a harmful effect of oscillations on people and technology operations. The dampers are widely applied for this purpose. One of the most widespread models of structural friction forces having piecewise linear relation to displacement was analysed. T The author suggests the application of phase trajectories mapping in plane "acceleration - displacement". Unlike the trajectories mapping in a plane "velocity - displacement", they don't require large number of geometrical constructions for identification of the characteristics of dynamic systems. It promotes improving the accuracy. The analytical assumptions had been verified by numerical modeling. The results show good enough coincide between numerical and analytical estimation of dissipative characteristic.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{UngerKoenke,
  author    = {Unger, J{\"o}rg F. and K{\"o}nke, Carsten},
  title     = {DISCRETE CRACK SIMULATION OF CONCRETE USING THE EXTENDED FINITE ELEMENTMETHOD},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3030},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30303},
  pages     = {12},
  abstract  = {The extended finite element method (XFEM) offers an elegant tool to model material discontinuities and cracks within a regular mesh, so that the element edges do not necessarily coincide with the discontinuities. This allows the modeling of propagating cracks without the requirement to adapt the mesh incrementally. Using a regular mesh offers the advantage, that simple refinement strategies based on the quadtree data structure can be used to refine the mesh in regions, that require a high mesh density. An additional benefit of the XFEM is, that the transmission of cohesive forces through a crack can be modeled in a straightforward way without introducing additional interface elements. Finally different criteria for the determination of the crack propagation angle are investigated and applied to numerical tests of cracked concrete specimens, which are compared with experimental results.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Ubysz,
  author    = {Ubysz, Andrzej},
  title     = {MATHEMATICAL DESCRIPTION OF SELF-EXCITED VIBRATIONS IN SILO WALLS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3029},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30294},
  pages     = {7},
  abstract  = {The paper contains a description of dynamic effects in the silo wall during the outflow of a stored material. The work allows for determining the danger of construction damage due to resonant vibrations and is of practical importance by determining the influence of cyclic pressures and vibro-creeping during prolonged use of a silo. The paper was devised as a result of tests on silo walls in semi-technical scale. The model is generally applicable and allows for identification of parameters in real- size silos as well.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{TrummerDenzlerSuesse,
  author    = {Trummer, Michael and Denzler, J. and S{\"u}ße, Herbert},
  title     = {PRECISE 3D MEASUREMENT WITH STANDARD MEANS AND MINIMIAL USER INTERACTION - EXTENDED SINGLE-VIEW RECONSTRUCTION},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3028},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30282},
  pages     = {8},
  abstract  = {The paper proposes a new method for general 3D measurement and 3D point reconstruction. Looking at its features, the method explicitly aims at practical applications. These features especially cover low technical expenses and minimal user interaction, a clear problem separation into steps that are solved by simple mathematical methods (direct, stable and optimal with respect to least error squares), and scalability. The method expects the internal and radial distortion parameters of the used camera(s) as inputs, and a plane quadrangle with known geometry within the scene. At first, for each single picture the 3D position of the reference quadrangle (with respect to each camera coordinate frame) is calculated. These 3D reconstructions of the reference quadrangle are then used to yield the relative external parameters of each camera regarding the first one. With known external parameters, triangulation is finally possible. The differences from other known procedures are outlined, paying attention to the stable mathematical methods (no usage of nonlinear optimization) and the low user interaction with good results at the same time.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Traversoni,
  author    = {Traversoni, Leonardo},
  title     = {MOVEMENT DETECTION AND RECOGNITION WITH QUATERNION WAVELETS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3027},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30274},
  pages     = {8},
  abstract  = {We show how a Morlet type quaternion wavelet may be tuned to a pair of stereoscopic {\O}lms in order to detect moving objects and calculate its velocity shape volume and other characteristics. We show some practical examples of simple objects taken with normal pocket avi cameras.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{SzolomickiBaranski,
  author    = {Szolomicki, Jerzy Pawel and Baranski, Jacek},
  title     = {COMPUTATIONAL SIMULATIONS FOR HOMOGENIZATION OF MASONRY STRUCTURES},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3026},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30265},
  pages     = {7},
  abstract  = {In this paper proposed the application of two-parameters damage model, based on non-linear finite element approach, to the analysis of masonry panels. Masonry is treated as a homogenized material, for which the material characteristics can be defined by using homogenization technique. The masonry panels subjected to shear loading are studied by using the proposed procedure within the framework of three-dimensional analyses. The nonlinear behaviour of masonry can be modelled using concepts of damage theory. In this case an adequate damage function is defined for taking into account different response of masonry under tension and compression states. Cracking can, therefore, be interpreted as a local damage effect, defined by the evolution of known material parameters and by one or several functions which control the onset and evolution of damage. The model takes into account all the important aspects which should be considered in the nonlinear analysis of masonry structures such as the effect of stiffness degradation due to mechanical effects and the problem of objectivity of the results with respect to the finite element mesh. Finally the proposed damage model is validated with a comparison with experimental results available in the literature.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{SzarataStarostina,
  author    = {Szarata, Andrzej and Starostina, T.},
  title     = {MAMDANI'S FUZZY INFERENCE SYSTEM AS A TOOL FOR MULTIMODAL SPLIT MODELING},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3025},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30257},
  pages     = {1},
  abstract  = {This paper presents results of applying Fuzzy Inference System for estimation of the number of potential Park and Ride users. Usually it is difficult to evaluate the number of users because it depends on human factor and data in the considered system are uncertain. In such situation the traditional mathematical approaches can not take into consideration rough data. Therefore a fuzzy approach can be applied in this case. A fuzzy methodology is treated as a proper way to describe choice of mode of transport, and especially that uncertainty accompanied of choosing process has rather fuzzy character. The proposed approach is based on the Mamdani Fuzzy Inference System and for calculation there is used Matlab software with Fuzzy Logic Toolbox. Mamdani model requires, as an input data, knowledge of the shape of membership function. These functions can be calibrated taking into consideration results of questionnaires conducted among users of Park and Ride system. Due to lack of representative sample of users, one has decided to use results of experts' questionnaires as a input data for calibration the shape of membership functions. Describing factor will be generalized cost of the trip for different modes of transport. Proposed approach consists of two main stages: modeling of share of public/private transport trips and Multimodal model estimating number of Park and Ride users. Verification of presented methodology is treated as an indirect proof. Proposed approach can be applied for estimation of bi-modal split. Then the results are compared with traditional approaches based on logit functions. Comparable results of proposed fuzzy approach with traditional logit models can be treated as a confirmation of chosen methodology.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{StoimenovaLinsDatchevaetal.,
  author    = {Stoimenova, Eugenia and Lins, Yvonne and Datcheva, Maria and Schanz, Tom},
  title     = {INVERSE MODELLING OF SOIL HYDRAULIC CHARACTERISTIC FUNCTIONS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2985},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29858},
  pages     = {12},
  abstract  = {In this paper we evaluate 2D models for soil-water characteristic curve (SWCC), that incorporate the hysteretic nature of the relationship between volumetric water content θ and suction ψ. The models are based on nonlinear least squares estimation of the experimental data for sand. To estimate the dependent variable θ the proposed models include two independent variables, suction and sensors reading position (depth d in the column test). The variable d represents not only the position where suction and water content are measured but also the initial suction distribution before each of the hydraulic loading test phases. Due to this the proposed 2D regression models acquire the advantage that they: (a) can be applied for prediction of θ for any position along the column and (b) give the functional form for the scanning curves.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Stangenberg,
  author    = {Stangenberg, Friedhelm},
  title     = {LIFETIME ORIENTED DESIGN CONCEPTS UNDER ASPECTS OF DEGRADATION},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2915},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170328-29154},
  pages     = {25},
  abstract  = {Optimum technological solutions must take into account the entire life cycle of structures including design procedures as well as quality assurance, inspection, maintenance, and repair strategies. Unfortunately, current design standards do not provide a satisfactory basis to ensure expected structural lifetimes. The latter may vary from only a few years for temporary structures to over a century for bridges, water dams or nuclear repositories. Consistent scientific concepts are urgently required to cover this wide spectrum of lifetimes in structural design and maintenance. This was a motivation for a group of scientists at the Ruhr-University Bochum (RUB) to start a special research program supported by the German Research Foundation (DFG) within the Cooperative Research Center SFB 398 since 1996. Institutes of the University Wuppertal and of the University Essen-Duisburg joined the research group. The goal of the Center is to study sources of damage and deterioration in materials and structures, to develop consistent models and simulation methods, to predict structural lifetimes and finally to integrate this predictions into new lifetime-oriented design strategies. Research activities in our center are organised in three Project Groups as follows: - Modelling of lifetime effects - Methods for lifetime-oriented structural analyses - Future lifespan-oriented design strategies.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{SpiekermannDonath,
  author    = {Spiekermann, Christoph and Donath, Dirk},
  title     = {DIGITAL SUPPORT OF MATERIAL- AND PRODUCT SELECTION IN THE ARCHITECTURAL DESIGN- AND PLANNING PROCESS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3023},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30235},
  pages     = {10},
  abstract  = {Architecture is predominantly perceived over the surfaces limiting the space. The used surface materials thereby should support the design intention and have to fulfil various technical and economical requirements. If the architect wants to select the "right" or the "best" material he has to play with very different and sometimes contradicting criteria and must weight these individually for the special purpose. This selection process is supported only insufficiently by today's digital systems. If it would be possible to illustrate all the various parameters by numerical values, the method of multidimensional scaling will offer a solution for architects to find the material which is best fitting on basis of his individual weighting of criteria. By displaying the result of the architect's multidimensional query in a spatial arrangement multidimensional scaling can support an interactive selection process with additional feedback over the applied search strategy.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}