Plasticity Induced Residual Stress in Pipes

Autor:	Daowu Zhou, Ali Mirzaee-Sisan
Rok vydání:	2012
Předmět:	Materials science education Bent molecular geometry Welding Plasticity Finite element method law.invention Physics::Fluid Dynamics Stress (mechanics) Plastic bending Residual stress law Ultimate tensile strength Physics::Accelerator Physics Composite material
Zdroj:	Volume 3: Pipeline and Riser Technology.
DOI:	10.1115/omae2012-83530
Popis:	An analytical model for predicting residual stress introduced in a pipe (away from girth weld) by plastic bending is examined. Stresses for a specific case where the pipe is bent, reverse bent and straightened are compared with results from a non-linear finite element analysis. The analytical model is then used to determine the through-thickness plasticity induced residual stress in the axial direction for a wide range of pipe geometries which are typically used offshore. It is found that the magnitude of extreme axial residual stress depends significantly on the ratio of pipe diameter to wall thickness. A simplified formula for estimating the extreme fibre tensile residual stress is derived and presented.Copyright © 2012 by ASME
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::25139416e36441969e248d90d4f11f17 https://doi.org/10.1115/omae2012-83530 Zobrazit plný text záznamu