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Book of Abstracts. 18th Youth Symposium on Experimental Solid Mechanics
Kytýř, Daniel ; Doktor, Tomáš ; Zlámal, Petr
The YSESM symposium provides a forum for young researchers and engineers, PhD students and students dealing with subjects of experimental mechanics. The Symposium concentrates on current work in all areas of experimental research and its application in solid and fluid mechanics. The topic will particularly concern to: Conventional and Advanced Experimental Methods in Solid and Fluid Mechanics; Non-Destructive Testing and Inspection, Measurements in Material Science, Computer Assisted Testing and Simulation, Engineering Design Simulation, Hybrid Methods, Experimental Techniques – Numerical Simulation, Optical Methods and Image Processing, Measurements in Biomechanics, Sensor Techniques for Micro- and Nano-Applications, Measurement Methods for Forensic Engineering.
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Research of the ruin of Štamberk Castle in the context of the region
Novotný, Jakub ; Ramešová, Michaela
The paper provides an overview of the research results of the Štamberk castle carried out according to newly defined principles for the research, management and presentation of historical ruins, the aim of which is to support new solutions to increase the usability of the castle for tourism and to integrate the monument into the regional structures of localities with tourism potential. The castle was an important place within the territory of today's Highlands. The subject of the project, on which ITAM CAS has been collaborating with the Telčsko Microregion since 2020, is research into the history of the castle with a focus on the technological aspects of its construction, structural changes and demise. It includes the creation of a 3D model of the ruins in a landscape context. The project focuses on the history of lime production and the related inventory of geological sites. This research brings new information important not only for learning about the history of the castle or for studying analogous situations, but also for increasing the attractiveness of the monument for tourism. The paper first presents the current standards of research and management of ruins, then it deals with an outline of the research potential of Štamberk for the field of tourism with an emphasis on the history of the castle, mapping the landscape framework and identifying links to the regional environment. At the end, it summarizes the results so far that can be used to present the historical, cultural and natural wealth of the region with a specific link to tourism.
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"Breathing" of longitudinally stiffened steel webs subject to repeated partial edge loading
Kutmanová, I. ; Škaloud, Miroslav ; Januš, K.
The aim of the first part of the Prague experimental research on web "breathing" was to look into the effect of the repeated\ncharacter of patch loading on the ultimate limit state of steel plate girder webs fitted with longitudinal ribs. 80 experimental panels were tested to date, the flange size and the position and dimensions of the longitudinal ribs being varied. During the tests, the "breathing" of the girder webs under the action of a cyclic patch load, the initiation and propagation of cracks in the most heavily stressed areas of the webs, and their influence on the "erosion" of the plastic failure mechanisms of the test girders were carefully studied. Final analysis of the data obtained made it possible for the authors to establish the limit fatigue loads, longitudinally stiffened steel plate girders whose thin webs are subject to a repeated partial edge load.
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Ultimate load behaviour of longitudinally stiffened steel webs subject to partial edge loading
Kutmanová, I. ; Škaloud, Miroslav ; Januš, K. ; Löwitová, O.
The objective of the contribution is to describe the main results and conclusions of a several years' experimental investigation into the ultimate limit state of steel plate girders whose thin webs were loaded by a partial edge load. Altogether 184 experimental girders were tested, with the following geometrical characteristics of the test girders being varied from girder to girder: (i) the depth-to-thickness ratio of the webs, (ii) the flange size, (iii) the position of\nthe longitudinal rib, (iv) its dimensions and (v) the length of load. Special care was given to a study of (a) the\nstiffeners location and size and (b) the dimensions of the loaded flange upon the progression of plastification, the failure mechanisms and ultimate strengths of the girders tested.
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Nonstationary vibrations of rectangular plate excited by concentrated force with linearly variable frequency
Náprstek, Jiří ; Fischer, Ondřej
Many physical and technical problems can be modelled as a rectangular plate with certain edge-supports, loaded by forces with variable frequency (e.g. machines in industrial buildings, electrodynamic systems). Such systems can be solved numerically using finite element method, i. e. solving the system of ordinary differnetial equations in time. In some practical cases of frequency-variation this problem can be solved analytically - the advantage of such a procedure is the objectivity and the possibility of parametric analyses of the problem.
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Methodology for the classification of corrosion aggressiveness of internal environments contaminated with volatile organic acids
Kouřil, M. ; Boháčková, T. ; Švadlena, J. ; Prošek, T. ; Strachotová, K. Ch. ; Kreislová, K. ; Fialová, P. ; Majtás, Dušan
The aim of the methodology is to specify the procedures for determining the corrosion aggressiveness of internal atmospheres for the area of historic preservation, especially in objects with an increased risk of volatile occurrence\norganic substances, which can endanger metal and other objects with their corrosive aggressiveness cultural and historical value. Target locations are, for example, archives, libraries, exhibition spaces and depositories of museums and churches and target objects of lead seals, organ pipes containing lead, stained glass windows, tin-lead dishes, technical monuments with lead solders, printing letters, etc.
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Monitoring the movement of the cemetery church Vsech svatych in Kutna Hora - Sedlec
Zíma, Pavel ; Drdácký, Miloš
The cemetery church Vsech svatych above the ossuary in Kutna Hora Sedlec is a part of a cultural monument of world importance. In view of the planned and later realized archaeological and construction activities in its immediate vicinity, there was a requirement to monitor in long-term its movements, especially the tilt of the towers and the entire building. The deformations of the floors in the ossuary signalized the possibility of the instability of the church's foundation and the danger of the appearance and development of faults in its masonry structures.
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