Stress Distribution Investigation at the Tapered Sandwich Endings

Result code in 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>
Result on the web
<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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Result language
angličtina
Original language name
Stress Distribution Investigation at the Tapered Sandwich Endings
Original language description
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.
Czech name
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Czech description
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Project
<a href="/en/project/ED0002%2F01%2F01" target="_blank" >ED0002/01/01: NETME Centre (New Technologies for Mechanical Engineering)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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