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【求助】管子与管板胀接
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学ansys没多久,硬着头皮写了段命令流,但结果一直不满意,好像不收敛,麻烦高手帮我看看。是二维轴对称模型,模拟管子胀接到管板上,管子管板初始间隙0.2mm,加载分2步:一是180Mpa胀接压力下,管子胀至管板;二是卸掉压力,管子管板产生残余接触压力。最后需要求求管子与管板间的接触压力。 finish /clear /filname,2d /title,axisymmetric /prep7 et,1,plane42 et,2,targe169 et,3,conta172 keyopt,1,3,1 !plane设置为轴对称单元 keyopt,3,5,3 !contact设置icont adjustment为gap/penetration keyopt,3,9,0 !包含初始化穿透 keyppt,3,10,1 r,3 real,3 R,3,,,0.3,0.15,-0.2, mp,ex,1,1.9e5 mp,prxy,1,0.3 tb,miso,1 !设置multilinear,输入应力应变曲线、摩擦系数 tbpt,,0.001,190 tbpt,,0.008,275 tbpt,,0.027,370 tbpt,,0.054,430 tbpt,,0.080,475 tbpt,,0.107,510 tbpt,,0.134,530 tbpt,,0.157,545 mp,mu,1,0.1 mp,ex,2,2.1e5 mp,prxy,2,0.3 tb,miso,2 tbpt,,0.0023,483 tbpt,,0.013,490 tbpt,,0.033,570 tbpt,,0.053,630 tbpt,,0.076,670 tbpt,,0.116,715 tbpt,,0.155,730 mp,mu,2,0.1 rectng,10.5,12.5,0,85 rectng,12.7,21.7,2,52 lsel,s,,,2,4,2 lesize,all,,,100 lsel,s,,,1,3,2 lesize,all,,,4 lsel,s,,,5,7,2 lesize,all,,,6 lsel,s,,,6,8,2 lesize,all,,,50 mat,1 amesh,1 mat,2 amesh,2 allsel lsel,s,,,8 cm,_target,line type,2 nsll,s,1 !选择与所选线相关的节点 esurf,all allsel lsel,s,,,2 cm,_contact,line type,3 nsll,s,1 esurf,all allsel finish /solu antype,static NROPT,full nlgeom,on autots,on pred,on lnsrch,on outres,all,all nsub,100,10000,10 lsel,s,,,1,5,4 nsll,s,1 d,all,uy lsel,s,,,4 nsll,s,1 nsel,r,loc,y,4,50 sf,all,pres,350 time,100 allsel lswrite,1 lsel,s,,,4 nsll,s,1 nsel,r,loc,y,4,50 sf,all,pres,0 time,200 allsel lswrite,2 lssolve,1,2,1 [ Last edited by tiexie1986 on 2009-9-28 at 16:11 ] |
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2楼2009-09-28 10:36:53









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