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Wyszukujesz frazę "Misztela, A." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Analysis of calculation models of scaffolding constructions in light of experimental tests results of constructive scaffolding module
Autorzy:
Misztela, A.
Starczewski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/246563.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
static analyses
scaffold structures
computational models
different verification formulas
load evaluating
analiza statyczna
struktury rusztowań
modele obliczeniowe
szacowanie obciążenia
Opis:
The concern of the article is the analysis of multiple computational models of scaffolding construction, taking into account the experimental results obtained for a representative scaffolding construction module. Analyses of 25 distinct models have been performed, allowing selecting models that most accurately predict deformations of the real construction. The article deals with the issues of elastic-plastic second-order analysis in relation to the working anchored scaffolds and it is focused on the standardization of computational models for engineering calculations. Including in calculations the plastic bearing capacity reserve and using objective calculation procedures, allows optimal designing of the scaffolding and evaluating of the load capacity. Structural model analyses were carried out in terms of their conformity with the actual construction. For comparative purposes, the results of the analyses of individual models were evaluated according to different verification formulas to determine the extent of their applicability. The purpose of the article was to test the behaviour of the system under the influence of constant horizontal forces reflecting the influence of wind and rising from zero until destruction due to the vertical load.
Źródło:
Journal of KONES; 2018, 25, 1; 295-306
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatigue strength analysis of welded aluminium stairs
Autorzy:
Jastrzębski, M.
Misztela, A.
Gołoś, K.
Powiązania:
https://bibliotekanauki.pl/articles/244513.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
fatigue test
welded joints
aluminium thin-walled constructions
test zmęczeniowy
połączenia spawane
aluminiowa konstrukcja cienkościenna
Opis:
The article presents numerical analyses and results of experimental fatigue tests of the welded stairs made from prefabricated EN-AW 6063-T66 aluminium alloy thin-walled profiles. Fatigue life analysis of welded thin-walled structures is a complicated and demanding task. Fatigue analysis of stairs was carried out according to the concept of a weak link, which was verified experimentally. The FEM method was applied in strength analysis. The conducted research allowed identifying the weak link of the structure at the welded joint. The samples stairs were subjected to fatigue tests. The fatigue tests have been conducted using specially designed set up. The experiments confirmed the numerical analysis. The cracks occurred at welded joints before expected fatigue life to fracture. Then the stairs structure was modified by changing the weld joints arrangement. The fatigue tests were carried out again and showed further weaknesses of their structure cracking of the step profile. To precisely capture this problem, detail finite element calculations for the analysed stairs have been conducted. Applying the nominal stress method, this problem was solved changing the treads profile of the stairs step. The last improvement in the construction was sufficient to satisfy fatigue strength requirement of the analysed structure. The weak link approach and nominal stress method proved to be an effective tool in fatigue analysis of the examined structure.
Źródło:
Journal of KONES; 2018, 25, 1; 177-184
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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