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[求助]
ansys焊接溫度場(chǎng)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(wú)焊料,未開(kāi)坡口,就是簡(jiǎn)單的對(duì)接焊接,熱源采用激光高斯熱源,但是在用ansys做焊溫度場(chǎng)的模擬時(shí)得到的最高溫度達(dá)到了兩三萬(wàn)度,這個(gè)結(jié)果肯定不符合實(shí)際啊,真要達(dá)到了那個(gè)溫度,材料不都揮發(fā)了嗎,我看到別人用我這個(gè)材料做出來(lái)的溫度云圖最高溫度為兩三千度左右,我不知道問(wèn)題到底出在哪里,如果說(shuō)是單位的問(wèn)題的話,也不可能啊,因?yàn)閯e人用我這個(gè)材料做激光熔覆層模擬出來(lái)的溫度也是只有兩三千度,我這個(gè)程序中沒(méi)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(gè)兩塊平板對(duì)接焊接的生死單元的案例。。! |
銅蟲(chóng) (初入文壇)
新蟲(chóng) (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(lái),請(qǐng)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 |
木蟲(chóng) (小有名氣)
木蟲(chóng) (小有名氣)
鐵蟲(chóng) (初入文壇)
金蟲(chóng) (初入文壇)
新蟲(chóng) (初入文壇)
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