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Vol.12, No3, 2012, pp.185–190
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NUMERICAL CALCULATION OF THE WATER-TUBE BOILER USING FINITE ELEMENT OF THE ORTHOTROPIC PLATE Vesna O. Milošević-Mitić1, Branka Gaćeša2, Nina M. Anđelić1, Taško Đ. Maneski1 1)University of Belgrade, Faculty of Mechanical Engineering, Belgrade, Serbia, vmilosevic@mas.bg.ac.rs 2)J.CHRISTOF d.o.o, Bulevar Mihajla Pupina 10, Novi Beograd, Serbia |
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Abstract Norms handle the issues concerned with calculation of pressurized boiler components, however not considering the influences of thermal strains. Application of FEM in boiler design is suggested in calculating all components that are not covered by the norm. Detailed numerical calculation of the water-tube boiler type VU60-Minel Kotlogradnja is presented in the paper. Stress and strain fields are obtained based on numerical models for various types of loading. The influences of the over-pressure and thermal loading are discussed. Distribution of membrane and bending stresses for substructures and distribution of deformation energy are involved in the analysis. Membrane walls (tube panels) of the water-tube boilers are exposed to large loads. They are modelled using elements of a thin orthotropic plate. The influence of the buck-stays on the structural behaviour is discussed. Keywords: water-tube boiler, temperature, membrane wall, orthotropic plate, stress field |
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full article (2174 kB)
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