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Membrane walls are very important structural parts of water-tube boiler   construction. Based on their specific geometry, one special type of finite   element was defined to help model the global boiler construction. That is the   element of reduced orthotropic plate with two thicknesses and two elasticity   matrixes, for membrane and bending load separately. A global model of the   boiler construction showed that the high value of stress is concentrated in   plates of the buckstay system in boiler corners. Validation of the new finite   element was done on the local model of the part of membrane wall and   buckstay. A very precise model of tubes and flanges was compared to the model   formed on the element of a reduced orthotropic plate. Pressure and thermal   loads were discussed. Obtained results indicated that the defined finite   element was quite favorable in the design and reconstruction of the boiler   substructures such as a buckstay system. [Projekat Ministarstva nauke   Republike Srbije, br. TR 35040 i br. TR 35011

Modeling of the buckstay system of membrane-walls in watertube boiler construction