Modeliranje udarnega preizkusa za sendvič kompozit

Juriševič, Martin (author), Klemenc, Jernej (mentor)

V diplomski nalogi smo raziskali obnašanje sendvič kompozitne strukture, sestavljene iz laminatov z ogljikovimi vlakni in aluminijastega satovja pri nizkoenergijskem udarcu. V programskem okolju Abaqus je bil razvit numerični model z uporabo eksplicitne dinamične analize. Posebna pozornost je bila namenjena modeliranju lepilnega sloja med posameznimi komponentami. Primerjani so bili različni pristopi modeliranja lepilnega sloja, vključno s togo povezavo, kohezivnimi elementi in kohezivnim kontaktom. Za validacijo numeričnega modela so bili izvedeni eksperimentalni preizkusi. Rezultati so pokazali dobro ujemanje med simulacijami in meritvami ter potrdili ustreznost kohezivnega kontakta za modeliranje udarnega preizkusa pri obravnavani strukturi. Analizirani so bili tudi odzivi materiala, porazdelitev napetosti in mehanizmi poškodb.

• Language: Slovenian
• Keywords: sendvič kompoziti, laminat z ogljikovimi vlakni, aluminijasto satovje, Abaqus, metoda končnih elementov, udarni preizkus
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [M. Juriševič]
• Year: 2026
• Number of pages: 43 str.
• PID: 20.500.12556/RUL-185905
• UDC: 62-752:678.061:519.6(043.2)
• COBISS.SI-ID: 288738563
• Publication date in RUL: 22.08.2026

Secondary language

• Language: English
• Title: Impact Test modeling of Sandwich Composite Structures

Abstract

A behaviour of a sandwich composite consisting of carbon fibre reinforced composite skin and an aluminium honeycomb core under low-velocity impact loading were investigated within the scope of thesis. A numerical model was developed in Abaqus using explicit dynamic analysis. Different approaches for modelling the adhesive layer, including tie constraints, cohesive elements and cohesive contact, were evaluated and compared. Experimental impact tests were performed to validate the model. The results showed good agreement between simulations and measurements and confirmed the suitability of the cohesive contact approach for the analysed structure. Furthermore, stress distribution, deformation behaviour and damage mechanisms were analysed.

• Keywords: sandwich composite, carbon fibre reinforced composite, aluminium honeycomb, Abaqus, finite element method, impact test