Numerical analysis of fatigue damage on selected connection of the crane bridge support structure

Abstract eng:
The article deals with a numerical analysis of selected connection of diagonal of the steel truss structure supporting the crane track. The analysis focused on the prediction of fatigue damage of the most stressed members. The initial static analysis of the entire structure helped to determine the influence lines for the selected elements. The main goal of this article is numerical model of particular connection of diagonal. Numerical model uses the variable load amplitude obtained from probability analysis converted to the amplitude spectrum of static magnitudes like input parameters. The Rain Flow method from software ANSYS Workbench is used for fatigue analysis of numerical model. The critical parts in terms of fatigue and life expectancy are identifying by this approach.

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