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MODELING AND ANALYSIS OF INCREMENTAL SHEET FORMING

BROWSE_DETAIL_CREATION_DATE: 01-12-2016

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BROWSE_DETAIL_TYPE: Thesis

BROWSE_DETAIL_SUB_TYPE: Masters

BROWSE_DETAIL_PUBLISH_STATE: Unpublished

BROWSE_DETAIL_FORMAT: PDF Document

BROWSE_DETAIL_LANG: English

BROWSE_DETAIL_SUBJECTS: Manufactures,

BROWSE_DETAIL_CREATORS: Memiçoğlu, Pelin (Author),

BROWSE_DETAIL_CONTRIBUTERS: Music, Ömer (Advisor), Karadoğan, Celalettin (Advisor),

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Manufacturing, Metal forming, Flexible forming, Sheet forming, Incremental Sheet Forming, Modelling, Finite Element Modelling


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Incremental Sheet Forming (ISF) is a flexible process that forms sheet by creating local plastic deformation on the sheet by applying pressure with a forming tool. It is divided into classes by the forming tool's one or many points of contacts on the sheet and the usage of partial die or full die. The forming process is generally done by attaching the forming tool to a computer aided vertical milling CNC machine, which follows a pre-defined (according to desired shape) tool path coordinates. Incremental Sheet Forming method is not suitable for serial productions because of the manufacturing time. Generally, for mass production, deep drawing or stamping is preferred. Therefore, it is preferred for low volume production or prototype manufacturing. The major advantages of ISF are to eliminate the die cost, enablingivcustomer-oriented production and its ability to do the manufacturing on a relatively simple three-axis vertical CNC milling machine. The aim of this thesis is to model the process using Finite Element Method and to investigate its mechanics. The computational time for a conventional (full-geometry) model is high, so a set of simplified (partial-geometry) models are developed to reduce computational time. Simplified models are compared to conventional models in terms of both computational time and geometry. Finally, simplified model is used to examine the process mechanics.


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