The Paton Welding Journal, 2009, №02



2009 №02 (01)

2009 №02 (03)

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TPWJ, 2009, #2, 11-15 pages

SIMULATION OF TEMPERATURE FIELDS AND STRESSES IN POLYETHYLENE PIPES IN HOT-TOOL WELDING

Journal                    The Paton Welding Journal
Publisher                International Association «Welding»
ISSN                       0957-798X (print)
Issue                       № 2, 2009 (February)
Pages                      7-10
 
 
Authors
N.P. NESTERENKO¹, I.K. SENCHENKOV², O.P. CHERVINKO² and M.G. MENZHERES^1
1E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
²S.P. Timoshenko Institute of Mechanics, NASU, Kiev, Ukraine
 
 
Abstract
The paper deals with the features of formation of thermal and mechanical fields in the joint zone in butt welding of polyethylene pipes by a hot tool inserted into the butt. It is shown that the magnitude and spatial distribution of residual stresses depend not only on the main parameters of the welding mode, but also on ambient temperature. A procedure of calculation of the temperature field in welded samples is proposed for correction of heating time.
 
 
Keywords: hot-tool welding, polyethylene pipes, thermomechanical processes, residual stresses, simulation, viscousflow state temperature, welded joint quality
 
 
Received:                07.07.08
Published:               28.02.09
 
 
References
1. Komarov, G.V. (2006) Joints of polymer material parts: Manual. St.-Petersburg: Professiya.
2. Nesterenko, N.P., Senchenkov, I.K., Chervinko, O.P. (2007) Modeling of temperature fields and stresses in hottool welding of plastic pipes at below zero temperatures. In: Proc. of Sci.-Techn. Seminar on Ensuring the Service Reliability of Pipeline Transport Systems. Kiev: PWI.
3. Starostin, N.P., Amosova, O.A. (2007) Flash-butt welding of polyethylene pipes at low ambient temperatures. Svarochn. Proizvodstvo, 4, 17-20.
4. Kajgorodov, G.K., Kargin, V.Yu. (2001) Influence of cooling rate of polyethylene weld on its strength. Truboprovody i Ekologiya, 2, 13-14.
5. Sokolov, V.A., Krasnikov, M.A. (2004) Problems of quality evaluation of polyethylene pipes using sleeves with embedded heaters. Ibid., 2, 7-98.
6. Makhnenko, V.I., Velikoivanenko, E.A., Rozynka, G.F. et al. (1991) Mathematical modeling of deformation processes in welding of polyethylene pipes. Avtomatich. Svarka, 4, 1-6.
7. Piven, A.A., Grechanaya, N.A., Chernobylsky, I.I. (1976) Thermophysical properties of polymer materials. Kiev: Vyshcha Shkola.

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