Plaisu nevienmērīgā izvietojuma iespaids uz teorētiski aprēķinātajām elastības konstantēm ortogonāli stiegrotiem laminātiem

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Plaisu nevienmērīgā izvietojuma iespaids uz teorētiski aprēķinātajām elastības konstantēm ortogonāli stiegrotiem laminātiem

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Darbā pētīti pret vidusplakni simetriski lamināti, kuriem iekšējo slāņu stiegrojums ortogonāls slogošanas virzienam, bet ārējo slāņu – paralēls. Analizēts plaisu nevienmērīgā izvietojuma iespaids uz efektīvajām elastības konstantēm. Eksperimentāli iegūta Junga moduļa un Puasona koeficienta atkarība no plaisu blīvuma transversajā slānī E- stikla šķiedras/ epoksīdsveķu laminātiem ar struktūrām [02/902]S, [0/902]S un[0/904]S, pakļaujot vienasīgai stiepes slogošanai. Pie iepriekš noteiktas deformācijas līmeņa slogošana pārtraukta un izmērīti faktiskie starpplaisu attālumi. Elastības raksturlielumu redukcija teorētiski noteikta, izmantojot divus plaisu sadalījuma veidus: bieži teorētiskos izvedumos apskatīto vienmērīgo sadalījumu un faktisko sadalījumu. Veikta simulācija ar Monte- Karlo metodi starpplaisu attālumu sadalījuma iegūšanai pie citiem deformācijas līmeņiem. Teorētiskā elastības konstanšu redukcija salīdzināta ar eksperimentālajiem datiem.

year	journal	country	edition	language
2008-01-01

https://dspace.lu.lv/dspace/handle/7/23734

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