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hanwenya新蟲 (初入文壇)
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[求助]
ansys的熱應(yīng)力分析出了問(wèn)題,應(yīng)力隨時(shí)間趨于了0,不知原因,求指導(dǎo)。
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最近做熱應(yīng)力分析,發(fā)現(xiàn)結(jié)構(gòu)總趨于0 ,但不知原因,以下是命令流,求解。 /prep7 et,1,plane55 MPTEMP,1,20,200,400,600,700,800, MPTEMP,7,900, MPDATA,DENS,1,1,7830,7830,7830,7830,7830,7830, !定義A1面材料參數(shù) MPDATA,DENS,1,7,7830 MPDATA,KXX,1,1,33.27,30.52,28.7,27.02,25.83,22.89 MPDATA,KXX,1,7,23.04 MPDATA,C,1,1,462,495,561,687,814,689, MPDATA,C,1,7,619 MPDATA,HF,2,1,250,400,2000,600,500,200!定義淬火時(shí)表面綜合換熱系數(shù) MPDATA,HF,2,7,0 r0=0.030 h0=0.230 rectng,0,r0,0,h0 esize,0.001 asel,s,area,,1 aatt,1,1,1 asel,all mshape,0,2d mshkey,1 amesh,all numcmp,area /solu !進(jìn)行0.01s穩(wěn)態(tài)分析 Antype,trans timint,off time,0.01 deltim,0.01 d,all,temp,860 allsel solve timint,on trnopt,full nropt,full,,adptky ddelet,all,temp *do,tm,10,600,10 Time,tm deltim,10 kbc,1 Autots,on lsel,s,,,2 nsll,s,1 sf,all,conv,-2,20 Outress,all,all Allsel Solve *enddo /prep7 etchg,tts mptemp MPTEMP,1,20,200,400,600,700,800, MPTEMP,7,900, MPDATA,EX,l,1,2.22e11,2.12e11,1.62e11,1.92e11,1.53e11,1.15ell, MPDATA,EX,1,7,0.9e11, MPDATA,PRXY,1,0.3 MPDATA,ALPX,1,1,1.35e-5,1.41e-5,1.46e-5,1.51e-5,1.53e-5,1.57e-5, MPDATA,ALPX,1,7,1.61e-5, lsel,s,,,4 d,all,ux,0 alls /solu tref,20 *do,tm,10,600,10 Time,tm ldread,temp,,,tm,,,rth solve *enddo |

新蟲 (初入文壇)

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