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11050209銀蟲(chóng) (正式寫(xiě)手)
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[求助]
接觸問(wèn)題求助 已有1人參與
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兩塊板通過(guò)螺栓連接，拉伸問(wèn)題的求助，搞不懂什么原因?qū)е滤愠鰜?lái)的應(yīng)力特別��！由于第一次接觸到接觸分析，所以不是很懂，我覺(jué)得問(wèn)題可能出在接觸這一塊，不知道大神能不能幫看下，還有一個(gè)可能就是我施加的約束不夠?如果是約束的問(wèn)題又該怎么加約束呢 附上命令： /prep7 /TITLE, lashen !定義單元類(lèi)型及材料屬性 et,1,solid185 et,2,plane182 mp,ex,1,190e6 mp,ex,2,184e6 mp,ex,3,69e9 mp,prxy,1,0.34 mp,prxy,2,0.3 mp,prxy,3,0.33 !定義參數(shù) l1=100/1000 !試樣長(zhǎng)度 l2=34/1000 !夾頭長(zhǎng)度 w1=24/1000 !試樣寬度 w2=33.8/1000 !夾頭寬度 h=1.5/1000 !試樣厚度 l3=48/1000 !試樣交疊部分長(zhǎng)度 r=4.9/1000 !連接圓弧半徑 r1=6.25/2/1000 !圓臺(tái)下表面半徑 r2=8.75/2/1000 !圓臺(tái)上表面半徑 r3=4/1000 !螺母半徑 pload1=100000000*2*h*w2 pload2=-pload1 !建立幾何模型(TA32) block,-l3/2,-l3/4,0,w1/2,0,h block,-l3/4,0,0,w1/2,0,h block,-l3/4,0,-w1/2,0,0,h block,-l3/2,-l3/4,-w1/2,0,0,h block,0,l3/4,0,w1/2,0,h block,l3/4,l3/2,0,w1/2,0,h block,l3/4,l3/2,-w1/2,0,0,h block,0,l3/4,-w1/2,0,0,h wpoff,-12/1000,0,0 cone,r1,r2,0,h wpoff,24/1000,0,0 cone,r1,r2,0,h vsel,s,,,1,4,1 allsel vsbv,all,9 allsel vsel,s,,,5,8,1 allsel vsbv,all,10 numcmp,all CSYS,0 WPAVE,0,0,0 CSYS,0 block,-37.1/1000,-24/1000,-w1/2,w1/2,0,h k,73,-42/1000,w1/2+r,h k,74,-76/1000,w1/2+r,h k,75,-76/1000,-(w1/2+r),h k,76,-42/1000,-(w1/2+r),h larc,72,73,54,r l,73,74 l,74,75 l,75,76 larc,76,69,54,r lsel,s,,,125,129,1 lsel,a,,,120 al,all allsel vdrag,63,,,,,,121 block,-76/1000,-42/1000,-w2/2,w2/2,-h,0 numcmp,all nummrg,all a,73,82,79,76 vsba,10,8 numcmp,all allsel vglue,all !建立幾何模型(7050) block,-l3/2,-l3/4,0,w1/2,-h,0 block,-l3/4,0,0,w1/2,-h,0 block,-l3/4,0,-w1/2,0,-h,0 block,-l3/2,-l3/4,-w1/2,0,-h,0 block,0,l3/4,0,w1/2,-h,0 block,l3/4,l3/2,0,w1/2,-h,0 block,l3/4,l3/2,-w1/2,0,-h,0 block,0,l3/4,-w1/2,0,-h,0 wpoff,-12/1000,0,0 cylind,0,r1,0,-h wpoff,24/1000,0,0 cylind,0,r1,0,-h vsel,s,,,14,16,1 vsel,a,,,9 allsel vsbv,all,21 vsel,s,,,17,20,1 allsel vsbv,all,22 CSYS,0 WPAVE,0,0,0 CSYS,0 block,24/1000,37.1/1000,-w1/2,w1/2,-h,0 k,139,42/1000,w1/2+r,0 k,140,76/1000,w1/2+r,0 k,141,76/1000,-(w1/2+r),0 k,142,42/1000,-(w1/2+r),0 larc,85,139,19,r l,139,140 l,140,141 l,141,142 larc,82,142,24,r lsel,s,,,186,187,1 lsel,a,,,192,193,1 lsel,a,,,167,197,30 al,all vdrag,99,,,,,,178 block,42/1000,76/1000,-w2/2,w2/2,0,h a,117,121,114,100 vsba,18,143 vsel,s,,,14,17,1 vsel,a,,,23,26,1 vsel,a,,,19,21,1 vsel,a,,,9 vglue,all numcmp,all !建立幾何模型(1s627) wpoff,-12/1000,0,0 cone,r1,r2,0,h cylind,0,r1,0,-(h+h) cylind,r1,r3,-h,-(h+h) allsel vsel,s,,,25,27,1 vglue,all wpoff,24/1000,0,0 cone,r1,r2,0,h cylind,0,r1,0,-(h+h) cylind,r1,r3,-h,-(h+h) allsel vsel,s,,,27,30,3 vsel,a,,,26 vglue,all CSYS,0 WPAVE,0,0,0 CSYS,0 allsel !劃分網(wǎng)格(TA32) MSHAPE,0,2D MSHKEY,1 mat,1 lsel,s,,,7,8 lesize,all,,,6 lsel,s,,,74,76,2 lesize,all,,,4 ALLSEL,ALL AMAP,39,4,33,32,5 lsel,s,,,17,18,1 lesize,all,,,6 AMAP,43,5,32,31,9 allsel AMAP,47,9,31,34,13 AMAP,50,13,34,33,4 lsel,s,,,4,6,2 lesize,all,,,4 ALLSEL,ALL AMAP,7,9,41,40,18 AMAP,14,18,40,39,21 AMAP,22,21,39,42,25 AMAP,34,25,42,41,9 lsel,s,,,35 lesize,all,,,3 vsel,s,,,1,8,1 vsweep,all asel,s,,,39,43,4 asel,a,,,47,50,3 asel,a,,,7,14,7 asel,a,,,22,34,12 aclear,all allsel vsweep,13 lsel,s,,,93 lesize,all,,,2,2 allsel lsel,s,,,97 lesize,all,,,2,0.5 vsweep,11 lsel,s,,,94,96,2 lesize,all,,,17 vsweep,12 vsweep,10 allsel !劃分網(wǎng)格(7050) mat,3 AMAP,96,62,101,100,63 AMAP,121,63,100,99,76 AMAP,132,76,99,102,68 AMAP,129,68,102,101,62 AMAP,73,76,109,108,77 AMAP,114,77,108,107,83 AMAP,117,83,107,110,88 AMAP,111,88,110,109,76 lsel,s,,,125 lesize,all,,,3 vsel,s,,,17,21,1 vsel,a,,,23,24,1 vsel,a,,,9 vsweep,all asel,s,,,73,96,23 asel,a,,,111,117,3 asel,a,,,121,129,8 asel,a,,,132 aclear,all allsel lsel,s,,,218,220,2 lesize,all,,,7 vsweep,22 lsel,s,,,199,200,1 lesize,all,,,2,2 vsweep,14 lsel,s,,,185,187,2 lesize,all,,,17 vsweep,16 vsweep,15 !劃分網(wǎng)格(1s627) mat,2 lsel,s,,,231,234,1 lesize,all,,,12 vsweep,25 lsel,s,,,259,262,1 lesize,all,,,12 vsweep,28 lsel,s,,,255,258,1 lesize,all,,,12 vsweep,29 lsel,s,,,241,244,1 LESIZE,all, , ,12 vsweep,26 lsel,s,,,291,294,1 lesize,all,,,12 vsweep,31 lsel,s,,,287,290,1 lesize,all,,,12 vsweep,32 allsel !建立接觸對(duì) mp,mu,4,0.3 mat,4 r,4 real,4 et,3,targe170 et,4,conta173 !generate the target surface asel,s,,,135,136,1 cm,left_up_bolt,area cmsel,s,left_up_bolt type,3 nsla,s,1 esln,s,0 esurf,all allsel !generate the contact surface asel,s,,,37,45,4 asel,a,,,48 cm,left_up_plate,area cmsel,s,left_up_plate type,4 nsla,s,1 esln,s,0 esurf,all allsel !generate the target surface mat,4 r,5 real,5 et,5,targe170 et,6,conta173 asel,s,,,147,148,1 cm,left_down_bolt,area cmsel,s,left_down_bolt type,5 nsla,s,1 esln,s,0 esurf,all allsel !generate the contact surface asel,s,,,94,97,3 asel,a,,,99,100,1 cm,left_down_plate,area cmsel,s,left_down_plate,area type,6 nsla,s,1 esln,s,0 esurf,all allsel !generate the target surface mat,4 r,6 real,6 et,7,targe170 et,8,conta173 asel,s,,,140,141,1 cm,right_up_bolt,area cmsel,s,right_up_bolt type,7 nsla,s,1 esln,s,0 esurf,all allsel !generate the contact surface asel,s,,,3,9,6 asel,a,,,19,32,13 cm,right_up_plate,area cmsel,s,right_up_plate type,8 nsla,s,1 esln,s,0 esurf,all allsel !generate the target surface mat,4 r,7 real,7 et,9,targe170 et,10,conta173 asel,s,,,160,161,1 cm,right_down_bolt,area cmsel,s,right_down_bolt type,9 nsla,s,1 esln,s,0 esurf,all allsel !generate the contact surface asel,s,,,56,74,18 asel,a,,,77,87,10 cm,right_down_plate,area cmsel,s,right_down_plate type,10 nsla,s,1 esln,s,0 esurf,all allsel !generate the target surface mat,4 r,8 real,8 et,11,targe170 et,12,conta173 asel,s,,,6,13,7 asel,a,,,20,33,13 asel,a,,,38,46,4 asel,a,,,49 cm,left_plate,area cmsel,s,left_plate type,11 nsla,s,1 esln,s,0 esurf,all allsel !generate the contact surface asel,s,,,129,132,3 asel,a,,,96,121,25 asel,a,,,111,117,6 asel,a,,,73,114,41 cm,right_plate,area cmsel,s,right_plate type,12 nsla,s,1 esln,s,0 esurf,all allsel /sol antype,static nlgeom,on autots,on lnsrcch,on pred,on outres,all,all time,1 nsubst,80,1000,20 nsel,s,loc,x,76/1000,76/1000 cp,1,ux,all d,7377,uy,0 d,7377,uz,0 nsel,s,loc,x,76/1000,76/1000 nsel,r,loc,y nsel,r,loc,z f,all,fx,pload1 allsel nsel,s,loc,x,-76/1000,-76/1000 cp,1,ux,all nsel,s,loc,x,-76/1000,-76/1000 nsel,r,loc,y nsel,r,loc,z f,all,fx,pload2 allsel solve finish |
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