Određivanje elastičnih parametara materijala gumenog elementa rastojnika-prigušivača

master's thesis

• Title (english): Determining of spacer-damper rubber element elastic material parameters
• Author: Matija Vedriš
• Mentor: Hinko Wolf (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2016-07-15, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Tema diplomskog rada je analiza gumenog elementa rastojnika-prigušivača pomoću metode konačnih elemenata, u svrhu dobivanja elastičnih parametara materijala gumenog elementa.

U radu je opisana pojava aeolskih vibracija vodiča dalekovoda i osnovni tipovi rastojnika-prigušivača. Definirani su tipovi strukturne nelinearnosti (geometrijska, materijalna, nelinearnost uslijed kontakta). Prikazan je razvoj kontaktne mehanike, opisane su vrste kontakata i objašnjene postavke za definiranje kontakta u programskom paketu Abaqus. Objašnjene su geometrijska i materijalna nelinearnost te opisane specifičnosti jednadžbi koje se koriste u analizi hiperelastičnih materijala (gume) Za svaki tip nelinearnosti verificirani su konačni elementi usporedbom numeričkih rješenja s referentnim rješenjima.

U nastavku su prikazani rezultati eksperimenta izvršenog na gumenom elementu. Napravljen je nelinearni numerički model u programskom paketu Abaqus te je opisan tijek izrade modela. Preklapanjem rezultata numeričke analize i eksperimenta dobiveni su elastični parametri materijala gumenog elementa rastojnika-prigušivača.

Abstract (english)

The subject of this thesis is the analysis of the spacer-damper rubber element using the finite element method, in order to determine the rubber element elastic material parameters.

The thesis describes the phenomenon of the power line aeolian vibration and basic types of spacer-dampers. Types of structural nonlinearity (geometric, material, nonlinearity due to contact) are defined through thesis. In thesis, the development of contact mechanics is shown, the types of contacts are described and the settings to define the contact in software program Abaqus are explained. The geometric and material nonlinearity are explained and the specifics of the equations used in the analysis of hyperelastic materials (rubber) are described. Each type of nonlinearity finite elements is verified by comparing the numerical and reference results.

At the end of the thesis, the results of experiments performed on the rubber element are shown. The making of nonlinear numerical model has been described and then calculated in software program Abaqus. Elastic material parameters of the spacer-damper rubber element where determined through comparison of the numerical analysis and experimental results.

• Keywords: aeolske vibracije; rastojnik-prigušivač; guma; nelinearna analiza; hiperelastičnost; kontakt; Abaqus
• Keywords (english): aeolian vibrations; spacer-damper; rubber; nonlinear analysis; hyperelasticity; contact; Abaqus
• Language: croatian
• URN:NBN: urn:nbn:hr:235:991957
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 16:56:31