Modeling and Determination of the Stresses and Deflections on a Boiler Using Finite Element Approach (ANSYS)

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Author(s) Braimah S. R. | Kukurah | Jamal-Deen. | Thomas A. Atatuba
Pages 689-693
Volume 6
Issue 2
Date February, 2017
Keywords Modeling, Stresses, Deflections, Boiler, Finite Element (Ansys)

A boiler is the device in which steam is generated by applying heat energy to water. Generally, a boiler consists of water container and some heating devices. To generate steam, the steam boiler is subjected to huge thermal and structural loads. The objective of the paper is to perform a 3D model and stimulate the boiler using ANSYS software to determine the loads and deflections on it. To obtain maximum efficient operation condition of the boiler, it is important to design a structure that can withstand the operating conditions of the thermal and structural loads on the boiler. ANSYS Workbench Model NX 8.0 was used to design the 3D model and also used for the analysis. The modeling process includes the static structural analysis, steady-state thermal analysis and modal analysis. The activities in the ANSYS modeling was categorized into three processes, namely, the preprocessor, the solution and the post processor. Generation of the model was conducted in the preprocessor, which involves material definition, creation of a solid model, and the meshing. In the solution stage, analysis type was defined and the boundary conditions were specified and the solution was done. The results were generated from the post processor stage. From the analysis, it was concluded that the steam boiler has stresses and deflections within the design limits of the material used. Hence, the designed steam boiler is safe under the given operating conditions. The result obtained shows a maximum tensile stress and deformation of the boiler as 308.90 MPa and 1.93 mm respectively. From the results, the tensile stress obtained is below the yield strength of the material used, which makes it safe for operation under those conditions.

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