Stress Distribution Investigation at the Tapered Sandwich Endings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU126697" target="_blank" >RIV/00216305:26210/18:PU126697 - isvavai.cz</a>

Výsledek na webu

<a href="http://ilot.edu.pl/eng_prace_ilot/?list_of_transactions/249_2017/5.html" target="_blank" >http://ilot.edu.pl/eng_prace_ilot/?list_of_transactions/249_2017/5.html</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Stress Distribution Investigation at the Tapered Sandwich Endings

Popis výsledku v původním jazyce

One of the typical sandwich ending is tapered transition to a solid laminate, which causes significant stress distribution changes. The reviewed articles show that tapered area causes increase in the shear stress in the core, increase of the axial forces in the facesheets and local bending at the fork point, points of the tapering angle change, and at ply drop positions. Most of the studies gave attention to the endings without reinforcing. During Erasmus+ internship at KTH 2D model of the tapered ending with reinforcing plies, various geometry and resin filler in the core tip was investigated to see the influence on the stress distribution. It was found that tension load case is not as critical as bending load case. Increasing of the solid laminate thickness, adding plies and inserting a short resin or adhesive filler into the core tip area lead to significant stress reduction, whereas in the transition point, from tapering to constant thickness sandwich, increasing radius is more efficient than reinforcing plies in regard to reduce stress concentration.

Název v anglickém jazyce

Stress Distribution Investigation at the Tapered Sandwich Endings

Popis výsledku anglicky

One of the typical sandwich ending is tapered transition to a solid laminate, which causes significant stress distribution changes. The reviewed articles show that tapered area causes increase in the shear stress in the core, increase of the axial forces in the facesheets and local bending at the fork point, points of the tapering angle change, and at ply drop positions. Most of the studies gave attention to the endings without reinforcing. During Erasmus+ internship at KTH 2D model of the tapered ending with reinforcing plies, various geometry and resin filler in the core tip was investigated to see the influence on the stress distribution. It was found that tension load case is not as critical as bending load case. Increasing of the solid laminate thickness, adding plies and inserting a short resin or adhesive filler into the core tip area lead to significant stress reduction, whereas in the transition point, from tapering to constant thickness sandwich, increasing radius is more efficient than reinforcing plies in regard to reduce stress concentration.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20304 - Aerospace engineering

Projekt

<a href="/cs/project/ED0002%2F01%2F01" target="_blank" >ED0002/01/01: NETME Centre (Nové technologie pro strojírenství)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Transactions of the Institute of Aviation

ISSN

0509-6669

e-ISSN

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Svazek periodika

2017

Číslo periodika v rámci svazku

4(249)

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

18

Strana od-do

62-79

Kód UT WoS článku

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EID výsledku v databázi Scopus

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