Research of the stress-strain state of rods obtained by porous blank extrusion
The features of the stress-strain state in the cross section of rods under forming are revealed by the finite element modeling of the process of direct extrusion of a porous iron blank. In particular, the nature of porosity distribution and the stress-state stiffness coefficient obtained as a result...
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| creator | Berezin, I. M. Polyakov, A. P. Polyakov, P. A. |
| description | The features of the stress-strain state in the cross section of rods under forming are revealed by the finite element modeling of the process of direct extrusion of a porous iron blank. In particular, the nature of porosity distribution and the stress-state stiffness coefficient obtained as a result of calculating the residual stresses field in the rod is studied. The Gurson-Tvergaard-Needleman (GTN) model is used to describe the behavior of the material of a porous blank under plastic deformation. It has been established that, in different cross-section zones of the rod, the values of the stress-state coefficient can be either positive or negative. It is shown that the most unfavorable area of the cross-section in the drawing index range investigated (2.04-4) is the material layer lying in the immediate vicinity of the outer surface of the rod (0.7…0.8R, where R is the rod radius), where the localization of tensile stresses is observed which promotes the emergence and growth of layered annular cracks. |
| doi_str_mv | 10.1063/1.5017323 |
| format | Conference Proceeding |
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M. ; Polyakov, A. P. ; Polyakov, P. A.</creator><contributor>Ramasubbu, Sunder ; Gorkunov, Eduard S. ; Panin, Victor E.</contributor><creatorcontrib>Berezin, I. M. ; Polyakov, A. P. ; Polyakov, P. A. ; Ramasubbu, Sunder ; Gorkunov, Eduard S. ; Panin, Victor E.</creatorcontrib><description>The features of the stress-strain state in the cross section of rods under forming are revealed by the finite element modeling of the process of direct extrusion of a porous iron blank. In particular, the nature of porosity distribution and the stress-state stiffness coefficient obtained as a result of calculating the residual stresses field in the rod is studied. The Gurson-Tvergaard-Needleman (GTN) model is used to describe the behavior of the material of a porous blank under plastic deformation. It has been established that, in different cross-section zones of the rod, the values of the stress-state coefficient can be either positive or negative. It is shown that the most unfavorable area of the cross-section in the drawing index range investigated (2.04-4) is the material layer lying in the immediate vicinity of the outer surface of the rod (0.7…0.8R, where R is the rod radius), where the localization of tensile stresses is observed which promotes the emergence and growth of layered annular cracks.</description><identifier>ISSN: 0094-243X</identifier><identifier>EISSN: 1551-7616</identifier><identifier>DOI: 10.1063/1.5017323</identifier><identifier>CODEN: APCPCS</identifier><language>eng</language><ispartof>AIP conference proceedings, 2017, Vol.1915 (1)</ispartof><rights>Author(s)</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/acp/article-lookup/doi/10.1063/1.5017323$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,780,784,794,4512,27924,27925,76384</link.rule.ids></links><search><contributor>Ramasubbu, Sunder</contributor><contributor>Gorkunov, Eduard S.</contributor><contributor>Panin, Victor E.</contributor><creatorcontrib>Berezin, I. M.</creatorcontrib><creatorcontrib>Polyakov, A. P.</creatorcontrib><creatorcontrib>Polyakov, P. A.</creatorcontrib><title>Research of the stress-strain state of rods obtained by porous blank extrusion</title><title>AIP conference proceedings</title><description>The features of the stress-strain state in the cross section of rods under forming are revealed by the finite element modeling of the process of direct extrusion of a porous iron blank. In particular, the nature of porosity distribution and the stress-state stiffness coefficient obtained as a result of calculating the residual stresses field in the rod is studied. The Gurson-Tvergaard-Needleman (GTN) model is used to describe the behavior of the material of a porous blank under plastic deformation. It has been established that, in different cross-section zones of the rod, the values of the stress-state coefficient can be either positive or negative. It is shown that the most unfavorable area of the cross-section in the drawing index range investigated (2.04-4) is the material layer lying in the immediate vicinity of the outer surface of the rod (0.7…0.8R, where R is the rod radius), where the localization of tensile stresses is observed which promotes the emergence and growth of layered annular cracks.</description><issn>0094-243X</issn><issn>1551-7616</issn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2017</creationdate><recordtype>conference_proceeding</recordtype><sourceid/><recordid>eNp9kEFLxDAQhYMoWFcP_oOchayTpEmboyzqCouCKHgrkzRhq2tTkq64_94uLnjz9HjzPmaGR8glhzkHLa_5XAGvpJBHpOBKcVZpro9JAWBKJkr5dkrOcn4HEKaq6oI8PvvsMbk1jYGOa0_zmHzObBLs-snh6PdRim2m0Y7T0LfU7ugQU9xmajfYf1D_PaZt7mJ_Tk4CbrK_OOiMvN7dviyWbPV0_7C4WbEsNIwMpYLgnEMtJIKp0YbaQW1cKZSy0tlgQDnnva6driGgsOhKEAGDqEwLckaufvdm100vTpebIXWfmHYNh2bfRMObQxP_wV8x_YHN0Ab5A7mFYNc</recordid><startdate>20171212</startdate><enddate>20171212</enddate><creator>Berezin, I. M.</creator><creator>Polyakov, A. P.</creator><creator>Polyakov, P. A.</creator><scope/></search><sort><creationdate>20171212</creationdate><title>Research of the stress-strain state of rods obtained by porous blank extrusion</title><author>Berezin, I. M. ; Polyakov, A. P. ; Polyakov, P. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-s260t-a350fccca623a098abf8c089c4255b3cbf905ccee68c680fa2bac402faf279d03</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2017</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Berezin, I. M.</creatorcontrib><creatorcontrib>Polyakov, A. P.</creatorcontrib><creatorcontrib>Polyakov, P. A.</creatorcontrib></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Berezin, I. M.</au><au>Polyakov, A. P.</au><au>Polyakov, P. A.</au><au>Ramasubbu, Sunder</au><au>Gorkunov, Eduard S.</au><au>Panin, Victor E.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Research of the stress-strain state of rods obtained by porous blank extrusion</atitle><btitle>AIP conference proceedings</btitle><date>2017-12-12</date><risdate>2017</risdate><volume>1915</volume><issue>1</issue><issn>0094-243X</issn><eissn>1551-7616</eissn><coden>APCPCS</coden><abstract>The features of the stress-strain state in the cross section of rods under forming are revealed by the finite element modeling of the process of direct extrusion of a porous iron blank. In particular, the nature of porosity distribution and the stress-state stiffness coefficient obtained as a result of calculating the residual stresses field in the rod is studied. The Gurson-Tvergaard-Needleman (GTN) model is used to describe the behavior of the material of a porous blank under plastic deformation. It has been established that, in different cross-section zones of the rod, the values of the stress-state coefficient can be either positive or negative. It is shown that the most unfavorable area of the cross-section in the drawing index range investigated (2.04-4) is the material layer lying in the immediate vicinity of the outer surface of the rod (0.7…0.8R, where R is the rod radius), where the localization of tensile stresses is observed which promotes the emergence and growth of layered annular cracks.</abstract><doi>10.1063/1.5017323</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-243X |
| ispartof | AIP conference proceedings, 2017, Vol.1915 (1) |
| issn | 0094-243X 1551-7616 |
| language | eng |
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| source | American Institute of Physics (AIP) Journals |
| title | Research of the stress-strain state of rods obtained by porous blank extrusion |
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