Autor: Kujawa, M - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Torsion of restrained thin-walled bars of open constant bisymmetric cross-section
Autorzy:: Kujawa, M.
Powiązania:: https://bibliotekanauki.pl/articles/1933993.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Gdańska
Tematy:: thin-walled bars
elastic stiffness matrix
geometric stiffness matrix
restrained torsion
Castigliano’s method
torsional buckling
Opis:: Elastic and geometric stiffness matrices were derived using Castigliano’s first theorem, for the case of torsion of restrained thin-walled bars of open constant bisymmetric cross-section. Functions which describe the angles of torsion were adopted from the solutions of the differential equation for restrained torsion. The exact solutions were simplified by expanding them in a power series. Numerical examples were taken from Kujawa M 2009 Static and Sensitivity Analysis of Grids. . . 97, GUT Publishing House, and Szymczak C 1978 Engineering Transaction 26 323. Convergence of the solutions was analyzed using the matrices derived for torsion angles, warping, bimoments and critical forces.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2012, 16, 1-2; 5-15
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Torsional buckling of restrained thin-walled bars of open bisymmetric cross-section
Autorzy:: Kujawa, M.
Powiązania:: https://bibliotekanauki.pl/articles/1933950.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Gdańska
Tematy:: thin-walled bars
torsional buckling
energetic approach
Newton-Raphson's method
Opis:: The problem of torsional budding of restrained thin-walled bars of an open constant bisymmetnc cross-section was solved using the minimum total stationary elastic energy condition (J. S. Przemieniecki 1968 Theory of Matrix Structural Analysis McGraw-Hill, New York) and the Newton-Raphson method (S. C. Chapra and R. P. Canale 1998 Numerical Methods for Engineers McGraw-Hill Book Company). The consideration was restricted to the elastic structures. The example presented in the paper helps to assess the correctness of the proposed solution. This article is an addition to the author's considerations contained in M Kujawa 2012 TASK Quart. 16 (1/2) 5.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2012, 16, 3-4; 301--306
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Distorsional analysis of I-section beam
Autorzy:: Kujawa, M.
Powiązania:: https://bibliotekanauki.pl/articles/1933992.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Gdańska
Tematy:: distortion
thin-walled I-section beam
elastic stiffness matrix
energetic approach
Castigliano’s method
Opis:: An elastic stiffness matrix was derived in the case of distortion of a restrained thin- walled I-section beam using the minimum total stationary elastic energy condition (Przemie- niecki J S 1968 Theory of Matrix Structural Analysis, McGraw-Hill, NY). The function describ- ing the angle of distortion was adopted form the solution of differential equation in the case of restrained distortion. The example presented in the paper helps to assess the correctness of the proposed solution. The proposed elastic stiffness matrix is applicable for solving distortion problems of bar structures composed of thin-walled members.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2012, 16, 1-2; 17-22
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Numerical simulation of behaviour of thin-walled frames subjected to static loads
Autorzy:: Kujawa, M.
Mikulski, T.
Szymczak, Cz.
Powiązania:: https://bibliotekanauki.pl/articles/1986932.pdf
Data publikacji:: 2002
Wydawca:: Politechnika Gdańska
Tematy:: frame
thin-walled members
Opis:: In this paper we are discussing the problem of behaviour of frames composed of thin-walled members with bisymmetric open cross-section. We present results of computer simulations of behaviour of the frame subjected to torsional loads. The main problem of the simulation is bimoment distribution in the frame node. The new approach using the node superelement is proposed to carry out static analysis of the frame. Numerical examples of the frame analysis subjected to a torque are given.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2002, 6, 3; 447-452
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Reduction of steel chimney vibrations with a pendulum damper
Autorzy:: Jankowski, R.
Kujawa, M.
Szymczak, Cz.
Powiązania:: https://bibliotekanauki.pl/articles/1955707.pdf
Data publikacji:: 2004
Wydawca:: Politechnika Gdańska
Tematy:: vibration
pendulum damper
steel chimney
Opis:: Karman vortices observed around chimneys may induce dangerous structural vibrations at certain wind velocities. The aim of this paper is to analyse the effectiveness of a pendulum damper in reducing vibrations of a steel chimney. A two-degree-of-freedom non-linear model is used to simulate the behaviour of the structure equipped with a damper. The results of the study show that the use of a pendulum with tuned frequency leads to significant reduction in structural response.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2004, 8, 1; 71-78
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

Artykuł

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