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Abstract

The stress distribution in specimens designed for the tensile testing is evaluated in the article. The reinforcement consists of long fibers that copy the outer contour of the specimen. The fibers are inserted within the curvature at the edge of the specimen with the neck. The stress distribution in fibers and matrix of dogbone specimen and specimen of rectangular shape is analyzed and compared. The analysis of stress state is analyzed in FEM software ADINA. Long fibers deposited in specimen were modeled using rebar elements.

Abstract

This article discusses the history of the spatial development of the town of Jordanów, as well as the cultural heritage sites located inside the territory of this urban centre. Jordanów, currently located within the administrative area of the Lesser Poland Voivodship, in the district of Sucha, was founded as a private town in 1564 and issued a charter by the Krakow Voivod Spytek Jordan of Zakliczyn. The urban centre is an example of a town which was founded in cruda radice–i.e. on previously undepeveloped land–during the early modern period but whose model bears a similarity to traditional urban forms used in previous centuries.

Abstract

This paper is deals with compression testing for the purpose of identify loading and unloading curves of polyurethane foam materials. Obtained testing results of foam are used for a mathematical description of the material behaviour. The mathematical description is applied to a finite-element analysis for the purpose of simulation and comparison with the actual compression test.

Abstract

The contribution deals with mechanical simulation of clamps for overhead powerline AlFe conductors. The process of pressed joint creation for two AlFe conductors and tensile test of such system are simulated using ANSYS software. The obtained results are compared to given tensile strength of the clamp.

Abstract

The pneumatic springs are frequently used as a machine component. They are mainly used for passive vibration damping with the possibility to regulate the working height of the springs. The paper describes the creation of a mathematical model of a spring controlled thru the PID regulator. At conclusion are summarized the limits of PID control and sketches the future possibility of substituting the PID controller by a neural network.

Abstract

Performing arts halls are increasingly becoming multi-purpose halls. Purpose-built venues that serve purely as concert halls or opera houses are rather rare today. Multi-purpose halls, conversely, can be used for different types of stage presentations inside a single building, under one roof with proportionally lower costs; furthermore, they can also be used for activities which are not related to the performing arts. The paper discusses functional and spatial adaptability and flexibility in multiple-use halls, and presents possible forms and arrangements of the stage and the auditorium as well as their spatial interrelations. Attention is focused upon acoustics and their impact on the functioning of multi-purpose performance spaces. The paper also presents multi-use and multi-format facilities. The author attempts to determine the best possible conditions for various types of theatre arrangement.

Abstract

The paper deals with the simulation of cooling processes of the aluminium profiles inside the water quench. Cooling of profile surfaces is performed by water spray, which is created by mixing a water and an air in a nozzles. Formulas were found in literature, modified and applied to a given problem that significantly simplified a solution. The task of numerical simulations was to determine temperature and velocity profile on aluminium profile surfaces for establishing of the heat transfer coefficient which was used as the convective boundary condition necessary to solve the heat transfer in the aluminium profile by finite element method. The difference between FEM and CFD results is up to 10%.

Abstract

This article presents the problem of the maintenance and adaptation of a historic shooting pavilion for new premises of the Museum of Photography in Krakow. The wooden pavilion used to be a part of the military shooting range development in Wola Justowska, established for the Austrian army in the 1880s. The adaptation of the pavilion for new functions has primarily enabled the protection of this historic and derelict building, which was entered into the Register of Historical Monuments in 1993. Conservation works have restored the shooting pavilion to it former splendour; there is also an effective display of preserved architectual elements, although these vary in their technical condition.

Abstract

This paper presents the preparation phase for model of transmission tower lattice construction using ANSYS APDL environment. Beam elements are used for the model which introduce complications in the preparation phase because of the need to define the beam shape. Considering that the lattice construction of the transmission tower consists of hundreds of trusses it is obvious that some auxiliary tool is necessary for preparation of such model in ANSYS APDL. This tool was programmed in SW Wolfram Mathematica.