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Recumbent bicycle - model and prototype

100%

Jureczko P. , Bachorz P. , Jezierski T.

tom z. 10

35--38

The paper presents a recumbent tricycle. A three-dimensional model of the tricycle is shown along with strength calculations and a prototype of the tricycle, which is tested currently.

W pracy przedstawiono trójkołowy rower poziomy. Pokazano trójwymiarowy model, obliczenia wytrzymałościowe oraz prototyp urządzenia, który jest aktualnie testowany.

Rotor optimization of axial-radial flux type synchronous machine based on magnetic flux leakage

84%

Qiu H. , Zhang S.

tom Vol. 70, nr 3

551--566

The axial-radial flux type permanent magnet synchronous machine (ARFTPMSM) can adjust the main magnetic field by controlling the axial flux, so it can overcome the problem that the flux of the permanent magnet synchronous motor (PMSM) is difficult to adjust. Due to the existence of the axial device in the ARFTPMSM, the finite element method (FEM) is used to establish a three-dimensional model for analysis. By analyzing the magnetic density distribution of the rotor, it is found that there is a serious magnetic leakage phenomenon at both ends of the tangential permanent magnet. The rotor material at the end of the tangent permanent magnet is replaced by non-ferromagnetic material to reduce the magnetic leakage. On this basis, the influence of the width of the non-ferromagnetic material on the performance of the motor is compared. By Fourier decomposition of the back-EMF waveform, the total harmonic distortion (THD) rate of the back-EMF under different axial magnetomotive force (MMF) was calculated. Finally, the eddy current distribution and the eddy current loss of the rotor are analyzed, and the variation law of the eddy current loss is summarized. The conclusion can provide reference for the optimal design of the ARFTPMSM.

A day in a shadow of high-rise : 3D parameterization and use of public space around pżm / hotel radisson building complex in center of Szczecin

84%

Zwoliński A.

tom Vol. 6, no. 1

67--71

The paper is related to issues of application of advanced computer techniques applied to analyses of public space use in urban areas. The particular interest is directed towards 3D city models and possibilities of urban analysis of street life using such environment. It is also focused on public spaces located nearby tall buildings in key areas of city centers. The article presents a daily analysis of street life beneath one of several tall buildings in city center of Szczecin, Poland. Further on, it presents possibilities and process of parameterization using computer techniques, both 2D and 3D. The sample results focus on patterns of use and their relation to urban environment of public space it occurs. The presented sample results are the opening of wider advanced research to be applied to more complex systems of public spaces.

Computer methods in study of historical assyrians chariot

59%

Służałek G. , Kubica M. , Służałek M.

tom z. 3/89

135-142

This paper is about the Assyrian battle chariot, which is one of the most characteristic element of the historical military. To modeling the battle chariot used a reverse engineering (RE) technique in CAD – Solid Edge and computer image analysis (CIA) in Met-Ilo and ImageJ applications. The numerical analysis which using finite element method (FEM) for calculations, were made in Autodesk Inventor software. 3D photorealistic rendering was realized after designed the model of the battle chariot in the Autodesk Showcase.

Artykuł traktuje o Asyryjskim wozie bojowym, który jest jednym z najbardziej charakterystycznych militarnych elementów historycznych. Do zamodelowania wozu posłużono się metodami inżynierii odwrotnej (IO) zrealizowanej w programie CAD – Solid Edge, użyto również komputerowej analizy obrazu (KAO) wykorzystując aplikacje Met-Ilo i ImageJ. Analizy numeryczne z zastosowaniem metody elementów skończonych (MES) zostały wykonane w Autodesk Inventor. Fotorealistyczny rendering zamodelowanej bryły wozu bojowego uzyskano w programie Autodesk Showcase.

Zastosowanie wybranych technologii BIM w inwentaryzacji oraz projektowaniu konstrukcji budowlanych

51%

Gajewski J. , Fajtek D.

tom nr 3

48--50

W artykule przedstawiono doświadczenia autorów ze stosowania wybranych technologii BIM w inwentaryzacji oraz projektowaniu konstrukcji budowlanych. Omówiono procedurę inwentaryzacji geometrii konstrukcji na podstawie chmury punktów uzyskanej za pomocą skaningu laserowego. Zaprezentowano możliwości modelowania 3D rzeczywistej geometrii konstrukcji na potrzeby oceny jej nośności, a także ograniczenia związane z BIM.

The article presents the authors' experience in the use of selected BIM technologies in the inventory and design of building structures. The inventory procedure of structure geometry based on a point cloud obtained by means of laser scanning was discussed. The possibilities of 3D modeling of the real geometry of the structure for the purposes of assessing its bearing capacity were presented. The article presents both the possibilities and limitations associated with BIM technology.