Revisiting the Considère criterion from the viewpoint of dislocation theory fundamentals
We demonstrate that the Considère condition for plastic instability, which is traditionally obtained from solid mechanics considerations, also follows from the intrinsic evolution laws for dislocation density. Taking strain-rate effects into account, a modified instability condition emerges in a for...
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| Veröffentlicht in: | Scripta materialia 2014-04, Vol.76, p.37-40 |
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| container_title | Scripta materialia |
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| creator | Yasnikov, I.S. Vinogradov, A. Estrin, Y. |
| description | We demonstrate that the Considère condition for plastic instability, which is traditionally obtained from solid mechanics considerations, also follows from the intrinsic evolution laws for dislocation density. Taking strain-rate effects into account, a modified instability condition emerges in a form that resembles Hart’s criterion, but is not identical to it. The Considère strain predicted from the dislocation-based model shows good agreement with experimental data, highlighting the primary role played by dynamic recovery in the mechanical response. |
| doi_str_mv | 10.1016/j.scriptamat.2013.12.009 |
| format | Article |
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Taking strain-rate effects into account, a modified instability condition emerges in a form that resembles Hart’s criterion, but is not identical to it. 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The Considère strain predicted from the dislocation-based model shows good agreement with experimental data, highlighting the primary role played by dynamic recovery in the mechanical response.</description><subject>Criteria</subject><subject>Dislocation density</subject><subject>Dislocation dynamics</subject><subject>Dislocations</subject><subject>Evolution</subject><subject>Instability</subject><subject>Modelling</subject><subject>Plastic deformation</subject><subject>Plastic instability</subject><subject>Solid mechanics</subject><subject>Stability criteria</subject><subject>Strain</subject><issn>1359-6462</issn><issn>1872-8456</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkM1KxDAUhYsoOI6-Q5duWpM0TdOlDv7BgCC6cBXS5EYztE1NMiPzRr6HL2bGEVy6OoH7nQP5sizHqMQIs4tVGZS3U5SDjCVBuCoxKRFqD7IZ5g0pOK3ZYXpXdVswyshxdhLCCiHEMMGz7OURNjbYaMfXPL5BvnBjsPrr00OeZiN468bceDf8XDcWPiZnx5g7k2sbeqdk3BHp6Pw2N-tRywHGKPtwmh2ZFHD2m_Ps-eb6aXFXLB9u7xeXy0JR3MSixh01mnJDtZa6JogRpOtGtYgpQ2VT847TxLC2QhWSqWM4BQaNxtCxrqvm2fl-d_LufQ0hisEGBX0vR3DrIDDnCFVNioTyPaq8C8GDEZO3g_RbgZHY2RQr8WdT7GwKTESymapX-yqkryQNPoEWRgXaelBRaGf_H_kGGumF7g</recordid><startdate>201404</startdate><enddate>201404</enddate><creator>Yasnikov, I.S.</creator><creator>Vinogradov, A.</creator><creator>Estrin, Y.</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>201404</creationdate><title>Revisiting the Considère criterion from the viewpoint of dislocation theory fundamentals</title><author>Yasnikov, I.S. ; Vinogradov, A. ; Estrin, Y.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c417t-51b4fd48f4ddad520620d57c906cf4a758b841b4693030a417f84e6e7d1eb6bb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Criteria</topic><topic>Dislocation density</topic><topic>Dislocation dynamics</topic><topic>Dislocations</topic><topic>Evolution</topic><topic>Instability</topic><topic>Modelling</topic><topic>Plastic deformation</topic><topic>Plastic instability</topic><topic>Solid mechanics</topic><topic>Stability criteria</topic><topic>Strain</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yasnikov, I.S.</creatorcontrib><creatorcontrib>Vinogradov, A.</creatorcontrib><creatorcontrib>Estrin, Y.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Scripta materialia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yasnikov, I.S.</au><au>Vinogradov, A.</au><au>Estrin, Y.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Revisiting the Considère criterion from the viewpoint of dislocation theory fundamentals</atitle><jtitle>Scripta materialia</jtitle><date>2014-04</date><risdate>2014</risdate><volume>76</volume><spage>37</spage><epage>40</epage><pages>37-40</pages><issn>1359-6462</issn><eissn>1872-8456</eissn><abstract>We demonstrate that the Considère condition for plastic instability, which is traditionally obtained from solid mechanics considerations, also follows from the intrinsic evolution laws for dislocation density. Taking strain-rate effects into account, a modified instability condition emerges in a form that resembles Hart’s criterion, but is not identical to it. The Considère strain predicted from the dislocation-based model shows good agreement with experimental data, highlighting the primary role played by dynamic recovery in the mechanical response.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.scriptamat.2013.12.009</doi><tpages>4</tpages></addata></record> |
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| ispartof | Scripta materialia, 2014-04, Vol.76, p.37-40 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Criteria Dislocation density Dislocation dynamics Dislocations Evolution Instability Modelling Plastic deformation Plastic instability Solid mechanics Stability criteria Strain |
| title | Revisiting the Considère criterion from the viewpoint of dislocation theory fundamentals |
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