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[求助]
ansys焊接溫度場模擬 已有2人參與
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| 本人在做兩塊平板的焊接,中間無焊料,未開坡口,就是簡單的對接焊接,熱源采用激光高斯熱源,但是在用ansys做焊溫度場的模擬時得到的最高溫度達到了兩三萬度,這個結(jié)果肯定不符合實際啊,真要達到了那個溫度,材料不都揮發(fā)了嗎,我看到別人用我這個材料做出來的溫度云圖最高溫度為兩三千度左右,我不知道問題到底出在哪里,如果說是單位的問題的話,也不可能啊,因為別人用我這個材料做激光熔覆層模擬出來的溫度也是只有兩三千度,我這個程序中沒有用到生死單元,要用到嗎,如果用生死單元,怎么用?求助大神教,或者給個兩塊平板對接焊接的生死單元的案例。。! |
金蟲 (初入文壇)
銅蟲 (初入文壇)
新蟲 (小有名氣)
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不好意思,好久未上論壇,才看到回復(fù),非常感謝你的回復(fù),下面我將代碼貼出來,請看看是什么原因? finish /CLEAR /filnanme,wewsdws /units,si /prep7 et,1,solid70 mptemp,1,-100,0,20,100,200,300,400,600 mpdata,kxx,1,1,150.29,141.35,140.89,138.94,136.95,135.06,132.65,128.35 mpdata,c,1,1,346.95,346.95,346.95,346.95,346.95,346.95,346.95,346.95 mpdata,dens,1,1,6839,6839,6839,6839,6839,6839,6839,6839 mpdata,hf,1,1,15,15,15,15,15,15,15,15 save length=0.03 width=0.006 height=0.002 block,0,length,0,width,0,height /view,1,1,1,1 wpoff,,0.001 wprota,,90 vsbw,all lsel,s,lenght,,0.03 lesize,all,,,30 allsel,all lsel,s,lenght,,0.002 lesize,all,,,4 allsel,all lsel,s,lenght,,0.001 lesize,all,,,5 allsel,all lsel,s,lenght,,0.005 lesize,all,,,5 allsel,all vmesh,all save /solu antype,4 tunif,25 tref,25 nsel,s,loc,x,0 sf,all,conv,15,25 allsel,all nsel,s,loc,x,length sf,all,conv,15,25 allsel,all nsel,s,loc,z,0 sf,all,conv,15,25 allsel,all nsel,s,loc,y,width sf,all,conv,15,25 allsel,all r=0.0002 qmax=2500/(3.14159*r**2) v=0.15 !v是1mm/ rb=0.001 tinc=rb/v tm=length/v max_time=length/rb+1 max_x=length/rb+1 max_y=width/rb+1 *dim,flux2,table,max_x,max_y,max_time,x,y,time *do,k,1,max_time,1 *do,i,1,max_x,1 flux2(i,0,k)=(i-1)*rb *enddo *do,j,1,max_y,1 flux2(0,j,k)=(j-1)*rb *enddo *do,i,1,max_x,1 *do,j,1,max_y,1 xcenter=v*(k-1)*tinc ycenter=0 distance=sqrt(((i-1)*rb-xcenter)**2+((j-1)*rb-ycenter)**2) *if,distance,le,r,then flux2(i,j,k)=qmax/exp(3*distance**2/(r**2)) *else flux2(i,j,k)=0 *endif *enddo *enddo flux2(0,0,k)=(k-1)*tinc *enddo *do,t,tinc,tm,tinc time,t nsel,s,loc,z,0 sfdele,all,conv sf,all,hflux,%flux2% allsel,all nlgeom,on nropt,full,,on autots,1 nsubst,25,,,1 kbc,1 lnsrch,1 tsres,erase tintp,,,,1,,,,, solve nsel,s,loc,z,0 sfdele,all,hflux sf,all,conv,15,25 allsel,all *enddo *DO,I,1,5 allsel,all TIME,1*I+tm AUTOTS,1 nsubst,25,,,1 LNSRCH,1 KBC,1 TSRES,ERASE tintp,,,,1,,,,, SOLVE *ENDDO |
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