Browsing by Subject "metal structures"

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Access status: Open Access ,
Evaluation of the state of stress in structural components of a screen separator
(2010) Wolny, Stanisław; Banaszewski, Tadeusz; Dzik, Stanisław; Matachowski, Filip
This study summarises the results of FEM analysis of the state of stress generated in structural components of a PZ3R screen separator under the typical operating conditions. Simplifications underlying the numerical analysis were verified by measuring the stresses in selected parts of the machine. Resistance test data indicated the directions for further modifications of structural elements of the screen separator, at the same time confirming the adequacy of these tests and emphasising the importance of the sequence of the applied tests.
Access status: Open Access ,
Strength analysis of a gantry crane of a coating structure
(2012) Ładecki, Bogusław; Badura, Sławomir; Matachowski, Filip
Gantry cranes with coating construction are used in Polish steel industry much less than truss bridges. For several bridges, which span and the supports have coating construction, there were made series of non-destructive testing, which revealed the presence of numerous fatigue cracks: in the area of a beam pad, the coating, as well as other elements of their supporting structure. Periodically carried out repairs and strengthening of bridges have not eliminated the problem of the emergence of more fatigue cracks. The analysis of FEM, verified by extensometer measurements of strains, gave the basis to designate the most strenuous areas of the construction. Gathered results of periodic non-destructive testing, combined with obtained results of FEM analysis, were the basis for designing appropriate reinforcements and indication the scope of conducting non-destructive testing of considered construction of bridges with coating.