20.500.12556/DKUM-67823 Model simulacije obremenitev in deformacij tkanin pri polaganju Model for simulating fabric loading and deformations during spreading process 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. 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 guiding/stretching 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 or minor 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 and the 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. tkanina mehanske lastnosti fizikalne lastnosti vlečna sila natezna obremenitev deformacije fabric mechanical properties physical properties fabric spreading traction force tensile loading deformation true false true Slovenski jezik Angleški jezik Znanstveno delo 2017-08-31 11:14:33 2017-08-31 11:15:58 2022-08-01 14:29:46 2019-07-11 16:32:34 2003 0 0 str. 348-353 št. 11/12 Letn. 46 2003 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 0351-3386 677.017:539.3/.5 763396 8528150 0351-3386 URN:SI:UM:DK:LWAPETQW Tekstilec_2003_Blekac,_Gersak,_Gubensek_Model_simulacije_obremenitev_in_deformacij_tkanin_pri_polaganju.pdf Tekstilec_2003_Blekac,_Gersak,_Gubensek_Model_simulacije_obremenitev_in_deformacij_tkanin_pri_polaganju.pdf 1 003CDC3ECF0E7272A827526B7506C5EB 8783a9360f3cae9ccad790998d20b8926baefd8aa3ea98621337353d6124d4fc 9958fbb7-7c0e-11eb-bb7a-00155d0001ca 20.500.12556/dkum/c8bd580f-435d-4379-9d70-a600a6d1adf5 https://dk.um.si/Dokument.php?lang=slv&id=116573 http://www.tekstilec.si/wp-content/uploads/2003/11/Model-simulacije-obremenitev-in-deformacij-tkanin-pri-polaganju.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=116572 Fakulteta za strojništvo 0 0 0