Thermal Shock Effects Modeling On A Globe Valve Body-Bonnet Bolted Flange Joint

Jean-Philippe Mathieu (1) , Jean-François Rit (2) , Jerome Ferrari (1) , David Hersant (1)

1 EDF - EDF
2 EDF R&D - EDF R&D

This paper attends to show efforts made at EDF R&D to improve comprehension of valve parts loadings during operation. Thermal shock in a globe valve is represented and modeled using EDF R&D Finite Element Analysis code (Code_Aster). Choices of modeling are discussed and balanced on the basis of "what an engineer can obtain without becoming a researcher". First simulation results are presented. Attention is focused on the evolution of Body-Bonnet Bolted Flange Joint (BBBFJ) tightening forces which are simulated during the thermal shock. An experimental setup is also presented for the studied valve, which implies thermocouple implementation for comparison of the simulated thermal field and strain measurement on each threaded rod to validate the mechanical modeling.

Mots clés: modeling; finite element method; thermal shock; globe valve; body-bonnet bolted flange joint; Code_Aster; nuclear industry; bolted flange joint

Domaines: Matériaux et structures en mécanique [physics.class-ph]; Matériaux et structures en mécanique [physics.class-ph]; Mécanique des solides [physics.class-ph]; Mécanique des solides [physics.class-ph]

Jean-Philippe Mathieu, Jean-François Rit, Jerome Ferrari, David Hersant. Thermal Shock Effects Modeling On A Globe Valve Body-Bonnet Bolted Flange Joint. Valve World 2008, Nov 2008, Maastricht, Netherlands. pp.VW0902. ⟨hal-00673157⟩