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    Finite Element Simulation of Magnesium Extrusion to Manufacture a Cross-Shaped Profile

    Source: Journal of Manufacturing Science and Engineering:;2007:;volume( 129 ):;issue: 003::page 607
    Author:
    Gang Liu
    ,
    Jie Zhou
    ,
    Jurek Duszczyk
    DOI: 10.1115/1.2714590
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: At present, a fundamental knowledge of the thermal and mechanical interactions occurring during the extrusion of magnesium is lacking. This acts as a serious technological barrier to the cost-effective manufacturing of lightweight magnesium alloy profiles. In the present research, a three-dimensional finite element (FE) simulation of extrusion to produce a magnesium alloy profile with a cross shape was carried out as an efficient means to gain this understanding. It revealed the redistribution of temperatures in the billet throughout the process from the transient state to the steady state, the formation of the deformation zone and dead metal zone, and varying fields of effective stress, effective strain, effective strain rate, and temperature close to the die orifice. The predicted extrudate temperature and extrusion pressure were compared with experimental measurements. The key to controlling the extrudate temperature and extrusion process was found to lie in the capabilities of predicting the temperature evolution during transient extrusion, as affected by extrusion conditions. The relationship between ram speed and the extrudate temperature increase from the initial billet temperature was established and experimentally validated.
    keyword(s): Temperature , Extruding , Simulation , Magnesium , Deformation , Stress , Pressure AND Finite element analysis ,
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      Finite Element Simulation of Magnesium Extrusion to Manufacture a Cross-Shaped Profile

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    http://yetl.yabesh.ir/yetl1/handle/yetl/136310
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    contributor authorGang Liu
    contributor authorJie Zhou
    contributor authorJurek Duszczyk
    date accessioned2017-05-09T00:24:47Z
    date available2017-05-09T00:24:47Z
    date copyrightJune, 2007
    date issued2007
    identifier issn1087-1357
    identifier otherJMSEFK-28004#607_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/136310
    description abstractAt present, a fundamental knowledge of the thermal and mechanical interactions occurring during the extrusion of magnesium is lacking. This acts as a serious technological barrier to the cost-effective manufacturing of lightweight magnesium alloy profiles. In the present research, a three-dimensional finite element (FE) simulation of extrusion to produce a magnesium alloy profile with a cross shape was carried out as an efficient means to gain this understanding. It revealed the redistribution of temperatures in the billet throughout the process from the transient state to the steady state, the formation of the deformation zone and dead metal zone, and varying fields of effective stress, effective strain, effective strain rate, and temperature close to the die orifice. The predicted extrudate temperature and extrusion pressure were compared with experimental measurements. The key to controlling the extrudate temperature and extrusion process was found to lie in the capabilities of predicting the temperature evolution during transient extrusion, as affected by extrusion conditions. The relationship between ram speed and the extrudate temperature increase from the initial billet temperature was established and experimentally validated.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleFinite Element Simulation of Magnesium Extrusion to Manufacture a Cross-Shaped Profile
    typeJournal Paper
    journal volume129
    journal issue3
    journal titleJournal of Manufacturing Science and Engineering
    identifier doi10.1115/1.2714590
    journal fristpage607
    journal lastpage614
    identifier eissn1528-8935
    keywordsTemperature
    keywordsExtruding
    keywordsSimulation
    keywordsMagnesium
    keywordsDeformation
    keywordsStress
    keywordsPressure AND Finite element analysis
    treeJournal of Manufacturing Science and Engineering:;2007:;volume( 129 ):;issue: 003
    contenttypeFulltext
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