Model simulacije obremenitev in deformacij tkanin pri polaganju

Rozalija Blekač (Author), Jelka Geršak (Author), Ivan Gubenšek (Author)

Abstract

Med procesom polaganja materiala z avtomatskim polagalnim strojem deluje na tkanino določena vlečna sila, ki je odvisna od načina odvijanja tkanine s tekstilnega navitka in vodenja preko vodilno-napenjalnih valjev polagalnega stroja do področja polaganja. Pri tem delujejo na gibajoči del tkanine natezne, tlačne in torne sile, ki povzročijo v tkanini večje all manjše natezne deformacije. Natezne obremenitve so pogojene z uporabljeno strojno opremo in parametri polaganja ter mehanskimi in fizikalnimi lastnostmi in reološkimi parametri tkanine. Nastala deformacija je odvisna od velikosti delujočih obremenitev in upora tkanine proti vlečni sili, ki učinkuje na gibajoči del tkanine pri polaganju. Ker gre za kompleksno problematiko nateznih obremenitev, ki učinkujejo na gibajoči del tkanine, na eni strani in za zahtevne relaksacijske pojave v tkanini po polaganju v krojno plast, je v prispevku podana analiza nateznih obremenitev tkanine med polaganjem in predstavljen predlog modela za simulacijo obremenitve in deformacije tkanine pri polaganju. V ta namen je izvedena študija tehnološko pogojenih nateznih obremenitev tkanine med procesom polaganja, ki so posledica na gibajoči del tkanine delujočih vlečnih, tornih in tlačnih sil pri polaganju, ter odnosa med obremenitvijo in deformacijo. Na podlagi opredeljenega odnosa med obremenitvijo in deformacijo je predlog modela za simulacijo obremenitve in deformacije tkanine pri polaganju zasnovan na metodi končnih elementov.

Keywords

tkanina;mehanske lastnosti;fizikalne lastnosti;vlečna sila;natezna obremenitev;deformacije;

Data

Language:	Slovenian
Year of publishing:	2003
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
UDC:	677.017:539.3/.5
COBISS:	8528150
ISSN:	0351-3386
Parent publication:	Tekstilec
Views:	848
Downloads:	66
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Model for simulating fabric loading and deformations during spreading process
Secondary abstract:	A certain traction force acts on the fabric during the spreading process on the automated spreading machine. This force depends on the way in which the fabric is being unrolled from the fabric roll over the guidingžstretching cylinders of the machine up to the spreading area. Tensional, compressional and friction forces that act on the moving part of the fabric cause greater orminor tensional deformations in the fabric. The magnitude of the loading depends on the applied machinery and the spreading parameters, as well as on the mechanical and physical properties and rheological parameters of the fabric. The resulting deformation depends on the size of the acting forces andthe resistance of the fabric against the traction force that acts on the moving part of the fabric during the spreading process. The analysis of tensional loading of the fabric in the spreading process is presented in the frame of this paper taking into account the complex question of tensional loading that acts on the moving part of the fabric and complex relaxation phenomenon in the fabric after laying down into fabric layers. Furthermore, a model for simulating the fabric loading and deformations during the spreading process is proposed. A study on technologically conditioned tensional loading of the fabric during the spreading process as well as a study on the relationship between loading and deformation was carried out for that purpose.The fabric loading can be in this case stated as a consequence of the traction, friction and compressional forces during the spreading process. The proposed model for simulating the loading and deformations during the fabric spreading process was designed using the finite elements method based on the defined relationship between loading and deformation.
Secondary keywords:	fabric;mechanical properties;physical properties;fabric spreading;trasction force;tensile loading;deformation;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 348-353
Volume:	ǂVol. ǂ46
Issue:	ǂno ǂ11/12
Chronology:	2003
ID:	10861184