Determination of the Flow Stress–Strain Curves of Aluminum Alloy and Tantalum Using the Compressive Load–Displacement Curves of a Hat-Type SpecimenSource: Journal of Applied Mechanics:;2019:;volume( 086 ):;issue: 003::page 31012Author:Lee, Jae-Ha
,
Shin, Hyunho
,
Kim, Jong-Bong
,
Kim, Ju-Young
,
Park, Sung-Taek
,
Kim, Gwang-Lyeon
,
Oh, Kyeong-Won
DOI: 10.1115/1.4042138Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The load–displacement curves of an aluminum alloy and tantalum were determined using a hat-type specimen in the compression test. Based on the results of finite element analysis, the employed geometry of the hat-type specimen was found to yield a load–displacement curve that is nearly independent of the friction between the specimen and the platen. The flow stress–strain curves of the alloy and tantalum were modeled using the Ludwik and Voce constitutive laws, respectively; furthermore, simulation of the compression event of the hat-type specimen was performed by assuming appropriate constitutive parameters. The constitutive parameters were varied via an optimization function built in matlab until the simulated load–displacement curves reasonably fit the experimental curve. The optimized constitutive parameters obtained in this way were then used to construct friction-free flow stress–strain curves of the two materials.
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contributor author | Lee, Jae-Ha | |
contributor author | Shin, Hyunho | |
contributor author | Kim, Jong-Bong | |
contributor author | Kim, Ju-Young | |
contributor author | Park, Sung-Taek | |
contributor author | Kim, Gwang-Lyeon | |
contributor author | Oh, Kyeong-Won | |
date accessioned | 2019-03-17T09:36:52Z | |
date available | 2019-03-17T09:36:52Z | |
date copyright | 1/22/2019 12:00:00 AM | |
date issued | 2019 | |
identifier issn | 0021-8936 | |
identifier other | jam_086_03_031012.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4255573 | |
description abstract | The load–displacement curves of an aluminum alloy and tantalum were determined using a hat-type specimen in the compression test. Based on the results of finite element analysis, the employed geometry of the hat-type specimen was found to yield a load–displacement curve that is nearly independent of the friction between the specimen and the platen. The flow stress–strain curves of the alloy and tantalum were modeled using the Ludwik and Voce constitutive laws, respectively; furthermore, simulation of the compression event of the hat-type specimen was performed by assuming appropriate constitutive parameters. The constitutive parameters were varied via an optimization function built in matlab until the simulated load–displacement curves reasonably fit the experimental curve. The optimized constitutive parameters obtained in this way were then used to construct friction-free flow stress–strain curves of the two materials. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Determination of the Flow Stress–Strain Curves of Aluminum Alloy and Tantalum Using the Compressive Load–Displacement Curves of a Hat-Type Specimen | |
type | Journal Paper | |
journal volume | 86 | |
journal issue | 3 | |
journal title | Journal of Applied Mechanics | |
identifier doi | 10.1115/1.4042138 | |
journal fristpage | 31012 | |
journal lastpage | 031012-6 | |
tree | Journal of Applied Mechanics:;2019:;volume( 086 ):;issue: 003 | |
contenttype | Fulltext |