Thickness optimization: Conical end
This project aimed at optimising the conical end of an industrial mixer. We had designed this equipment according to EN 13445-3 following traditional calculation methods. Due to the high pressure, the resulting thickness of the conical bottom was much greater than that of the rest of the equipment. To optimize this value, we performed an elastic-plastic analysis with FEA of this element.
Following EN 13445 Annex B, deformation analyses were carried out under internal pressure and external pressure (vacuum). In addition, non-linear buckling and fatigue study of the joint between the bottom and the cylinder were performed. As a result, it was possible to reduce the thickness of the bottom by 50%, which is a great saving in material, given the large dimensions of the equipment.
Project takeaways:
equipment. Despite its higher computational cost and simulation complexity, elastic-plastic analysis of pressure equipment using FEA is a very useful tool that allows to achieve more accurate results and therefore optimize material thicknesses. This procedure is competitive when designing pressure vessels for serial production.
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