Cristel Muresan, Gheorghe Achimas


Abstract: Operation life or durability of a part is the actual period of operation until reaching limit state.
Bends are the part of the fluid transport installations subject to wear, with erosion as the main cause of
degradation. When flow direction is changed by means of bends, particles would not follow the fluid but
would impact the bend wall, contributing to the degradation of the internal surface on the outer side of the
bend. Finite element method (FEM) is the most common process of numerical analysis in engineering
applications, as it provides flexibility, possibility of modelling bodies which are physically not homogenous,
as well as easy implementation in general calculus programs. The object of present paper is to extend the
understanding of phenomena occurring in medium and large diameter pipe bending using the mandrel
pulling method with induction heating, to analyse bend wall thickness when applying different temperature
ranges, and select proper lubricant for the pulling speeds in order to reduce processing time and extend the
life of the mandrel profiled for erosion by ensuring constant wall thickness and a circular section, as well as
to reduce manufacturing costs

Keywords: bends, durability, bending, numerical simulation, finite elements.

Full Text:



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