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Browsing by Subject "structural intensity"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Vibration energy flow in ribbed plates
    (Wydawnictwa AGH, 2006) Cieślik, Jacek; Bochniak, Wojciech
    The paper presents obtained from literature review formulations on structural intensity calculations. The formulas involve the loads (forces and moments) and strains (linear and angular) which enabled the evaluation of structural surface intensity for beams, shells and plates considered here as simple constructional elements. The numerical method of intensity evaluation was based on complex modal analysis with use of finite element method. There are presented results of the calculations which lead to the assessment of distribution of structural intensity vectors on the surface of simply supported, ribbed rectangular steel plate. The model included the source of vibrations (force excitation) and sink of energy (damper) with known position of application. The changes of finite elements grid density enabled detailed analysis of total vibration energy flow in analysed plate. Such solved problem was intended to show the usability of structure surface intensity method in diagnostics of joints in mechanical constructions.