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823978808新蟲(chóng) (初入文壇)
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[求助]
求助:利用ANSYS模擬制動(dòng)器轉(zhuǎn)動(dòng)時(shí)結(jié)果不收斂
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在結(jié)構(gòu)力學(xué)分析時(shí),想讓制動(dòng)器制動(dòng)盤轉(zhuǎn)動(dòng)起來(lái),由于本身solid185沒(méi)有旋轉(zhuǎn)自由度,采用mpc184建立剛性梁,給中心點(diǎn)施加旋轉(zhuǎn)位移,命令流如下 /prep7 *set,pi,4*atan(1.0) et,1,solid185 mp,dens,1,8.7e-9 mp,ex,1,2.06e5 mp,prxy,1,0.3 mp,alpx,1,1.3e-5 et,2,mpc184 keyopt,2,1,1 !rigid beam keyopt,2,2,1 !Lagrange multiplier method cylind,100,50,0,10,0,90 cylind,100,50,0,10,90,180 cylind,100,50,0,10,180,270 cylind,100,50,0,10,270,360 vglue,all lsel,s,,,2,4,2 lesize,all,,,20 lsel,s,,,5,7,2 lesize,all,,,20 lsel,s,,,49,60,1 lesize,all,,,20 lsel,s,,,6 lesize,all,,,10 lsel,s,,,9 lesize,all,,,2 allsel,all type,1 mat,1 real, esys,0 secnum, vsweep,all allsel,all csys,1 !轉(zhuǎn)化為以Z軸為旋轉(zhuǎn)軸的柱坐標(biāo)系 nrota,all !轉(zhuǎn)化為以Z軸為旋轉(zhuǎn)軸的柱坐標(biāo)系 asel,s,loc,x,50 nsla,s,1 n,52063,0,0,0 *get,nnum,node,0,count *get,nmin,node,0,num,min !*set,i,0 *do,i,1,nnum-1 type,2 real, e,node(0,0,0),nmin nsel,u,,,nmin *get,nmin,node,0,num,min *enddo csys,0 nsel,all nsel,u,,,52063 d,all,uz d,node(0,0,0),all ddele,node(0,0,0),rotz !定義rotz的自由度不約束 allsel,all n,52064,105,0,0 type,2 mat, real, e,node(100,0,0),52064 finish /solu antype,trans !瞬態(tài) trnopt,full lumpm,0 nlgeom,on !開(kāi)啟大變形 nropt,unsym !開(kāi)啟非對(duì)稱的牛頓-拉普森分析 nsubst,20,20,20 rescon,define,none outres,all,all time,1 kbc,0 d,52063,rotz,pi allsel,all solve 問(wèn)題: 1. 以上命令流運(yùn)算時(shí)顯示DOF LIMIT EXCEED,請(qǐng)問(wèn)哪里導(dǎo)致結(jié)果超出范圍? 2. 請(qǐng)問(wèn)大家有沒(méi)有分析制動(dòng)器的應(yīng)力場(chǎng)的經(jīng)驗(yàn),有用直接耦合的做出熱-應(yīng)力結(jié)果的嗎?? [ Last edited by 823978808 on 2013-7-26 at 22:21 ] |
新蟲(chóng) (初入文壇)
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