2001厚壁管闭式镦粗有限元分析及实验研究.pdf

null nullâ/Œnull 2001Mnull»3ù¨C5>TYµKís#Lùî*öêýTYªC¨‚ (¥Ù5,'Ó4BÕœîlj>TYEbn5,º¾ý\¥î™Vñ# ²;Q,¨ÐÑŸµKíEý\„.dý\É›µKíE,1 E²T?Cý\ VüA¹4Ú5qC¨¥(Ÿ;Kª,¾ý\#.dý\É›kùî,k²T„E²TÖ†zb1oMnull¨C5null>TYnullœînullµKíEFEM analysis and experiment on closednulldieupsettingof thicknullwall tubesShandong University of Technology null Gao Junnull Zhao Xinhainull Song Libinnull Zhao Guoqunnull null Abstractnull Using closednulldie upsetting process to manufacture thicknullwall tubes on normal hydraulic press may cause thedisnulluniformity of the thickness along the length of the tube. In this paper, a new process of using floating dies was intronullduced. The forming process and diestructure weregiven. Using therigidnullplastic finite element method, both the new pronullcess and the conventional process weresimulated on thecomputer workstation. The comparison of the simulated results forthe two processes shows that the thickness of the tube obtained by thenew process is more uniform than that by theconvennulltional process. Theexperimental research was also carried. Theexperimental result has a good agreement with the simulanulltion result.Keywordsnull Thicknullwall tubes null Closednulldie upsetting null Floating dienull FEM simulation*öê8ª®Ï]M SÐE‚ ãÁ'ù* *3, 32ß,ƒ=là°ù: 2000null06null18一a引言m1îU¤^²,a²5­W¥ õ¤q,‹¿Å˜¥¨C5,F²G›TYEb æ¨3ÁÏ'¥lø5‹,ÜsMª,¨>TY¥ZE9FC¨,T¹3Á,q¥°¸}95‹,ƒ‚Ç?vv¹†®3Áî'a¿ÿ€Ÿ?,]HSžnulllþ æ¨null,˜†Ì1p„ö?Z¥vt]b二a成形工艺及模具结构1nullî™ý\¤î™ý\ö1 “[/+¡ý½:Ênulllnulla/a"­aF£aYaa|aÖ![#€Fýb2null ²#ýTVñ ²Âm2îUbÇO v7„Ç*10⥹B8,Fî>TYH¥ÇbÇ LÞ69,Â11aÇ v8_iKÊb‰2®Þ3,®/â*5_,Â16KÊbâ*12Ðð13 õ¤,/â*5YV%çð14Ð/ð1 õ¤bm2null ²m1null/ðnull 2null‰null 3a9nullÞnull 4null¤Ænull 5null/â*null 6a8nullÇ vnull 7nullÇO vnull 10nullÇ*null 11a16nullÂnull 12nullâ*null 13nullðnull 14null%çðnull 15nulläÆnull 17nulläð ýTVñÂ/:  7ÊÂH,|ÜVF£¥5¸,ÂÆÇO v7=,i®=åçÊbAâ˜/›,{îâ*125¸É›>TY,NH,5¸Ça‰Á3¥ ˆ ïsY{î/›,M’¿a/â*5¸]HLCà_Fâ,’Ç*Z†ÐÇ v8¤(H,5¸Y²bA☛,Ça‰Þï¥T¨/¯Êb®AâäYVäð17aäÆ15a%çð14a¤Æ4#/â*5|¥ýqäb三a有限元模拟¨v˜¥8î™TYý\„.d¥%çYý\É›Eb®¿5qî™Ù5^àëÙ5,#Ê|Bñ©ë¸É›Ebm3îU'¹E¤ž¥5qM™f ƒ(mÏ¥0a60a120a186sY^EVñ¥»0a60a120a186„)bm3a¹¨%çlj²H¸M™Vñ¥E²Tb®¿Ça‰Ð¸­W ˆ ï¥i,V»60„ 7S,7S$M™,©ìÁá,7/M™51 þÏ,C¨“‚ (,/ ‚¡bm3b¹¨œîlj²H¸M™Vñ¥E²Tb®¿¨œîlj²,h¤(ëW¥ ˆ,/M™']„,©ì (,M™f ƒüAª¿¨%çlj²H¥M™f ƒbm3nullî™VñE²T四a试验分析m1îU¤¥qj¹null90mm null null64mmnull 132mmb¹hYQ”,«8Å/î',ôø²5¥l'÷,ʨnull“å‚M,ê=ånull¥YZT, In£å{©ÕyÍ¥•Y,®8‚MHq9Øq/j¹null90mm null null76mmnull 225mmb®¿5¸M™ ïv,ýT›ñÉ,s,qTY, (下转61页)7bm5¹ŠHµíäÆ¥f ƒbVm5b V A,ÀµäÆH,‹ ïKv)dϏ, dϏ)âîBñÇ `,'P?è<, dÛH9‚;±bm5b¹µäÆH, dϏ‹ïl,ÛH‹ ïv,“¸^Ü,qV« g/ Ÿ,Oí°O,ÉzbµäÆH, ¼
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