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master's thesis
Usporedba postupaka optimizacije oblika platine u postupcima cilindričnog dubokog vučenja
2022. urn:nbn:hr:179:855710
Tešija, Marino
University of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
Department of Mechanical Engineering and Naval Architecture

Cite this document

Tešija, M. (2022). Usporedba postupaka optimizacije oblika platine u postupcima cilindričnog dubokog vučenja (Master's thesis). Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:179:855710

Tešija, Marino. "Usporedba postupaka optimizacije oblika platine u postupcima cilindričnog dubokog vučenja." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2022. https://urn.nsk.hr/urn:nbn:hr:179:855710

Tešija, Marino. "Usporedba postupaka optimizacije oblika platine u postupcima cilindričnog dubokog vučenja." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2022. https://urn.nsk.hr/urn:nbn:hr:179:855710

Tešija, M. (2022). 'Usporedba postupaka optimizacije oblika platine u postupcima cilindričnog dubokog vučenja', Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, accessed 27 February 2025, https://urn.nsk.hr/urn:nbn:hr:179:855710

Tešija M. Usporedba postupaka optimizacije oblika platine u postupcima cilindričnog dubokog vučenja [Master's thesis]. Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture; 2022 [cited 2025 February 27] Available at: https://urn.nsk.hr/urn:nbn:hr:179:855710

M. Tešija, "Usporedba postupaka optimizacije oblika platine u postupcima cilindričnog dubokog vučenja", Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:179:855710

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Metadata
TitleUsporedba postupaka optimizacije oblika platine u postupcima cilindričnog dubokog vučenja
Title (english)Comparison of methods for optimization of initial blank shape in cylindrical cup deep drawing processes
AuthorMarino Tešija
MentorVedrana Cvitanić https://orcid.org/0000-0002-1277-0323 (mentor)
GranterUniversity of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
(Department of Mechanical Engineering and Naval Architecture)
Split
Defense date and country2022-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U ovom radu uspoređena su dva algoritma za optimizaciju početnog oblika platine u postupcima cilindričnog dubokog vučenja. Analizirani su postupci cilindričnog dubokog vučenja potpuno i nepotpuno izvučene posudice. Optimalni oblici određuju se na temelju rezultata simulacija postupaka u programu za analizu metodom konačnih elemenata ADINA 8.6 i primjenom algoritama za optimizaciju početnog oblika lima: algoritam temeljen na pogrešci oblika te algoritam temeljen na pogrešci oblika i putanji deformacija rubnih čvorova. Postupci optimizacije ovim algoritmima provedeni su za tri različite vrijednosti koeficijenata koji određuju veličinu promjene koordinata čvorova. Za algoritam temeljen na pogrešci oblika radi se o koeficijentu prigušenja, a za algoritam temeljen na pogrešci oblika i putanji deformacije rubnih čvorova radi se o koeficijentu pogreške oblika. U simulacijama su korištene elastične i plastične karakteristike lima aluminijske legure Al 2090-T3. Korišten je elasto-plastični model materijala koji se temelji na kvadratičnoj Hill (1948) funkciji tečenja, pridruženom pravilu tečenja i izotropnom nelinearnom modelu očvršćavanja. Primjenom razmatranih algoritama, optimalni početni oblici određeni su u malom broju iteracija. Za originalne kružne i modificirane početne oblike lima uspoređene su raspodjele ekvivalentne plastične deformacije i deformacije debljine.
Abstract (english)
In this paper, two algorithms are compared for optimizing the initial blank shape in cylindrical cup deep drawing processes. The processes of drawing completely and incompletely drawn cups are analyzed. Optimal blank shapes are determined based on the results of the simulations obtained by using the finite element analysis program ADINA 8.6 and by applying two optimization algorithms: algorithm based on the shape error and algorithm based on the shape error and deformation path of boundary nodes. Processes of optimization by these algorithms were done for three different values of coefficients which determine the size of change in trajectory. In the algoritham based on the shape error it is the attenuation coefficient while in the algorithm based on the deformation path it is the shape error coefficient. Elastic and plastic characteristics of the aluminium alloy Al 2090-T3 were used. Elastic-plastic material model is based on the quadratic Hill (1948) yield function, the associated flow rule and the isotropic nonlinear hardening model. By application of the analyzed algorithms, optimal blank shapes were determined in small number of iterations. For original circular and modified initial blank shapes equivalent plastic deformations and thickness deformations were compared.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:179:855710
Study programmeTitle: Mechanical Engineering; specializations in: Structures and Energy Technology, Computer Aided Design and Engineering, Production Mechanical Engineering
Course: Computer Aided Design and Engineering
Study programme type: university
Study level: graduate
Academic / professional title: Magistar/magistra inženjer/inženjerka strojarstva (Magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
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Created on2023-07-10 07:51:32