@inproceedings{f8a33a1a37054290afc1b41b3e2b324c,
title = "Numerical Simulation of Tube Bending Supported by Hydraulic Pressure for Manufacturing Butt-Welding Fittings",
abstract = "An innovative tube bending process supported by hydraulic pressure was patented in 1995. This process was designed for producing butt-welding fittings which particularly fulfil the dimensional specifications of the ASME B16.9, MSS SP-75, and MSS SP-43 standards. Since the patent has meanwhile expired, the bending process is now available for common use. This work presents a novel finite element (FE) model build using the software package LS-DYNA, which enables determining the process window for bending defect-free butt-welding fittings. This model was exemplarily applied for investigating the bending process of a 90° stainless steel elbow based on a straight tube of nominal pipe size (NPS) 6. Comparing the calculated geometry of the elbow with the actual geometry of an industrially produced elbow revealed very good dimensional agreement. This confirms that the presented model can be utilized for determining suitable process conditions, which allow for producing defect-free components.",
keywords = "Buckling, Butt-welding fitting, Finite element simulation, Hydraulic pressure, Hydroforming, Piping system, Stainless steel pipe, Tube bending, Tube forming",
author = "Josef Domitner and Peter Auer and Christof Sommitsch",
year = "2021",
doi = "10.1007/978-3-030-75381-8_170",
language = "English",
isbn = "978-3-030-75380-1",
series = "Minerals, Metals and Materials Series",
publisher = "The Minerals, Metals & Materials Society (TMS)",
pages = "2019--2029",
editor = "Glenn Daehn and Jian Cao and Brad Kinsey and Erman Tekkaya and Anupam Vivek and Yoshinori Yoshida",
booktitle = "Forming the Future",
note = "13th International Conference on the Technology of Plasticity : ICTP 2021, ICTP 2021 ; Conference date: 25-07-2021 Through 30-07-2021",
}