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Mechanisch‐technologisches Verhalten von ETFE‐Folien und deren Schweißverbindungen.

Authors :
Surholt, Felix
Runge, Dominik
Uhlemann, Jörg
Stranghöner, Natalie
Source :
Stahlbau. Aug2022, Vol. 91 Issue 8, p513-523. 11p.
Publication Year :
2022

Abstract

Mechanical‐technological behaviour of ETFE foils and their welded connections The thermoplastic fluoropolymer ethylene/tetrafluoroethylene, ETFE, has been increasingly used in membrane structures in the construction industry since the 1980s. The plastic ETFE exhibits a nonlinear, viscoelastic material behaviour that has not yet been fully investigated. However, when building membrane structures with ETFE foils, knowledge of the nonlinear, viscoelastic material behaviour is essential in order to be able to build wide, open and at the same time safe and economical structures. The material behaviour can be divided into short‐term tensile behaviour and long‐term behaviour, both under monoaxial and biaxial stresses. For the assembly of the surface structures, welding of the individual cut length is essential, since the basic material is only available in limited product widths. So far, there have only been a few studies on the load‐bearing behaviour of welded ETFE foils. This article provides a brief overview of the material behaviour of ETFE foils in short‐term tensile tests as well as long‐term tests in monoaxial and biaxial stress conditions. In addition, material models are presented which describe the material behaviour in the above‐mentioned tests or stress‐states. Furthermore, first insights into the fracture behaviour of welded ETFE foils are given. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00389145
Volume :
91
Issue :
8
Database :
Academic Search Index
Journal :
Stahlbau
Publication Type :
Academic Journal
Accession number :
158392436
Full Text :
https://doi.org/10.1002/stab.202200039