Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Finite element study of the hybrid expansion of tube-to-tubesheet joints
Abstract Recently, tube-to-tubesheet joint expansion has been used in heat exchanger applications in modern manufacturing as a combination of rolling, hydraulic pressure, and explosion. The combination of rolling and hydraulic pressure with explosion for tube-to-tubesheet expansion is more advantageous compared with conventional forming, welding, and machining approaches. This novel hybrid joint expansion technique could eliminate all the drawbacks associated with conventional methods. In this study, a two-dimensional (2D) axisymmetric finite element model was developed to study tube-to-tubesheet joints using the hybrid tube-to-tubesheet joint expansion technique. The developed model was then used to evaluate the effect of the wall reduction percentage during the different expansion stages on the joint integrity, in terms of residual contact pressure.
Highlights 2-D FE model has been used to simulate the tube-to-tubesheet hybrid expansion (hydraulic then rolled). Using the model to study the residual stress and distributions of radial and axial deformation of the tube. Study the effect of the combination of wall reduction on the residual contact pressure. Study the effect of the combination of wall reduction on the normal and effective stress.
Finite element study of the hybrid expansion of tube-to-tubesheet joints
Abstract Recently, tube-to-tubesheet joint expansion has been used in heat exchanger applications in modern manufacturing as a combination of rolling, hydraulic pressure, and explosion. The combination of rolling and hydraulic pressure with explosion for tube-to-tubesheet expansion is more advantageous compared with conventional forming, welding, and machining approaches. This novel hybrid joint expansion technique could eliminate all the drawbacks associated with conventional methods. In this study, a two-dimensional (2D) axisymmetric finite element model was developed to study tube-to-tubesheet joints using the hybrid tube-to-tubesheet joint expansion technique. The developed model was then used to evaluate the effect of the wall reduction percentage during the different expansion stages on the joint integrity, in terms of residual contact pressure.
Highlights 2-D FE model has been used to simulate the tube-to-tubesheet hybrid expansion (hydraulic then rolled). Using the model to study the residual stress and distributions of radial and axial deformation of the tube. Study the effect of the combination of wall reduction on the residual contact pressure. Study the effect of the combination of wall reduction on the normal and effective stress.
Finite element study of the hybrid expansion of tube-to-tubesheet joints
Alaboodi, Abdulaziz S. (Autor:in)
Thin-Walled Structures ; 137 ; 347-352
15.01.2019
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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