“EVALUACIÓN DE ESFUERZOS RESIDUALES EN CILINDROS SOLIDOS Y HUECOS SOMETIDOS A TORSIÓN PURA APLICANDO EL MÉTODO DEL ELEMENTO FINITO”

Abstract

Residual stresses are produced by many different manufacturing processes they must be considered and analyzed, in the design, manufacturing and fabrication stages. Because they can cause mechanical fails or they can be used in benefit to the component. Residual stresses are generated by non homogeneous loads which are above the yield strength of the material and they remain in the component even if the load that originated them is retired They have the particular characteristic of being auto equilibrated, so they can be beneficial or prejudicial to the element. There are different kinds of methods to measure residual stresses depending on the nature of the stress to be measured, these methods can be divided in destructive methods, semi destructive methods, and non destructive methods, and we can mention the following as an example of some of these techniques: x ray, hole drilling method, ultrasound method, Sachs method, etc. In this research the residual stresses are analyzed in solid and hollow cylindrical elements subject to torsion loads by analytical methods (mechanical theory), and numerical methods (finite element method), finding a very good similarity between the two methods. The finite element method is used as a validation method to the results founded in the analytical method so the results can be observed and compared. These results could be used as background to similar researches.