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• 关键词：Deformation ; Plasticity ; Fracture
• 刊名：Tetrahedron
• 出版年：2008
• 出版时间：21 July 2008
• 年：2008
• 卷：64
• 期：30-31
• 页码：7027-7040
• 全文大小：1294 K

文摘

Si studia il comportamento di un piatto sottile sollecitato uniformemente in una direzione. Il piatto è di materiale omogeneo, isotropico, elastico-plastico che risponde alle equazioni di deformazioni in funzione délle sollecitazioni secondo Hencky, in base al criterio di cedimento di von Mises. Si présume che le condizioni di sollecitazione del piatto esistano in tutto il materiale. Si dimostra che l'angolo di inclinazione θ del piano di scorrimento con direzione perpendicolare alla forza applicata è meno di θ₀ per le forze di trazione e superiore a θ₀ per quelle di compressione (direct.com/cache/MiamiImageURL/B6V32-481DPBH-27-6/0?wchp=dGLbVtb-zSkWz"" class=""charImg"" alt=""image"" title=""image"" height=""33"" width=""102""> è il valore di θ per un materiale incomprimibile). Per ultimo si dimostra che il piano di scorrimento è una superficie d'instabilità e perciò un'eventuale superficie di rottura da taglio.

Abstract

Иccлeдyeтcя пoveдeCd;иe тoCd;кoй плocкoй плиты пoдvePжeCd;Cd;oй PavCd;omePCd;omy Cd;aпPяжeCd;ию v oдCd;om Cd;aпPavлeCd;ии. Плитa cocтoит из oдCd;oPoдCd;oгo, изoтPoпCd;oгo, yпPyгo-плacтиkhecкoгo maтePиaлa, oтvekhaющeгo yPavCd;eCd;ияm ХeCd;ки пo Dd;avиcиmocти meждy Cd;aпPжeCd;иem и дeфoPmaциeй, c кPитePиem фoCd; mизeca пo тeкykhecти. ПPиCd;иmaютcя ycлovия плocкoгo Cd;aпPяжeCd;ия, дeйcтvyющeгo vo vcemmaтePиaлe. Дoкaзыvaeтcя, khтo yгoл Cd;aклoCd;a плocкocти cкoльжeCd;ия, c Cd;aпPavлeCd;иem иePпeCd;ликyляPCd;ыm к пPиmeCd;eCd;Cd;omy ycилию, meCd;ьшe θ₀ для Pacтягиvaющих ycилий и бoльшe θ₀ для cжиmaющих ycилий. (direct.com/cache/MiamiImageURL/B6V32-481DPBH-27-6/0?wchp=dGLbVtb-zSkWz"" class=""charImg"" alt=""image"" title=""image"" height=""33"" width=""102""> яvляeтcя зCd;akheCd;иem θ для Cd;ecжиmaemoгo maтePиDd;лa.) v зa клюkheCd;ии дoкaзaCd;o, khтo плocкocть cкoльжeCd;ия яvляeтcя плocкocтью Cd;ecгaбильCd;ocти, khтo moжeт пPиvecти к пovePхCd;ocтCd;omy илCd; cPeзCd;omy излomy.div>div>
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Concentrators of deformations and fracture of plastic bodiesdirect.com/science?_ob=ArticleURL&_udi=B6TYH-4MM1P34-8&_user=10&_coverDate=06 % 2F01 % 2F2008&_rdoc=19&_fmt=full&_orig=browse&_srch=doc-info( % 23toc % 235619 % 232008 % 23997849997 % 23683816 % 23FLA % 23display % 23Volume)&_cdi=5619&_sort=d&_docanchor=&_ct=39&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=a28674712489e588502e0151d9cb17d0#afn1"">^{direct.com/scidirimg/entities/2606.gif"" alt=""star, open"" title=""star, open"" border=""0"">}