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mengxiangke鐵蟲 (小有名氣)
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[求助]
求大神看下哪里有錯(cuò)誤 已有1人參與
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/PREP7 ET,1,PLANE13 KEYOPT,1,1,4 MP,DENS,1,8900 !輸入結(jié)晶器的材料性能參數(shù) MP,KXX,1,,3.93 MP,C,1,385 MPTEMP,,,,,,,, MPTEMP,1,30 MPTEMP,2,500 MPTEMP,3,1000 MPTEMP,4,1500 MPTEMP,5,2000 MPDATA,EX,1,,1.03E+011 MPDATA,EX,1,,8.4E+010 MPDATA,EX,1,,2.3E+010 MPDATA,EX,1,,2E+009 MPDATA,EX,1,,2E+008 MPDATA,EX,1,,2E+008 MPDATA,NUXY,1,,0.3 MPDATA,NUXY,1,,0.3 MPDATA,NUXY,1,,0.3 MPDATA,NUXY,1,,0.3 MPDATA,NUXY,1,,0.3 MP,ALPX,1,1.66E-5 !輸入鑄件材料性能參數(shù) !鑄件熱傳導(dǎo)系數(shù) MPTEMP,,,,,,,, MPTEMP,1,20 MPTEMP,2,100 MPTEMP,3,200 MPTEMP,4,300 MPTEMP,5,400 MPTEMP,6,425 MPTEMP,7,600 MPTEMP,8,630 MPTEMP,9,700 MPTEMP,10,800 MPDE,KXX,2 MPDATA,KXX,2,,77 MPDATA,KXX,2,,87 MPDATA,KXX,2,,97 MPDATA,KXX,2,,107 MPDATA,KXX,2,,117 MPDATA,KXX,2,,122 MPDATA,KXX,2,,60 MPDATA,KXX,2,,58 MPDATA,KXX,2,,240 MPDATA,KXX,2,,240 MPTEMP,,,,,,,, !鑄件比熱 MPTEMP,1,20 MPTEMP,2,100 MPTEMP,3,200 MPTEMP,4,300 MPTEMP,5,400 MPTEMP,6,600 MPTEMP,7,700 MPDE,C,2 MPDATA,C,2,,1020 MPDATA,C,2,,1020 MPDATA,C,2,,1100 MPDATA,C,2,,1150 MPDATA,C,2,,1220 MPDATA,C,2,,1400 MPDATA,C,2,,1400 MP,EX,2,45000 !鑄件彈性模量 MP,ALPX,2,26.8E-6 !鑄件線膨脹系數(shù) MP,NUXY,2,0.35 !鑄件泊松比 !幾何建模 !生成矩形面 RECTNG,0,0.05,0,0.01 RECTNG,0.02,0.03,0.01,0.1 RECTNG,0,0.05,0.1,0.11 RECTNG,-0.01,0.06,-0.01,0.02 RECTNG,0.01,0.04,0.02,0.09 RECTNG,-0.01,0.06,0.09,0.12 AADD,1,2,3 !面相加操作 APLOT,ALL AADD,4,5,6 NUMCMP,AREA !壓縮面編號(hào) APLOT,ALL SMRTSIE,4 MAT,2 AMESH,1 !對(duì)面進(jìn)行網(wǎng)格劃分 APLOT,ALL !顯示面 MAT,1 AMESH,2 NUMMRG,NODE !合并相同節(jié)點(diǎn) NUMCMP.LINE !壓縮線段數(shù) NUMCMP,NODE !壓縮節(jié)點(diǎn)數(shù) SAVE LPLOT,ALL !顯示線段 /PNUM,LINE LSEL,S,LINE,,3,9,2 LSEL,A,LINE,,13,20 SFL,ALL,CONV,454.5,,25 !施加對(duì)流邊界條件 ALLSEL SAVE FINISH /SOLU !進(jìn)入求解器 ANTYPE,TRANS TIMINT,OFF !進(jìn)行穩(wěn)態(tài)分析，確定初始條件 TIME,0.01 DELTIM,0.01 ASEL,S,,,1 NSLA,S,1 D,ALL,TEMP,700 !施加溫度載荷 ALLSEL ASEL,S,,,2 NSLL,S,1 D,ALL,TEMP,25 !施加溫度載荷 ALLSEL LSEL,S,,,21 NSLL,S,1 D,ALL,UY ALLSEL SOLVE !得到初始溫度分布 TIMINT,ON !進(jìn)行瞬態(tài)分析 TIME,120 !設(shè)置計(jì)算終止時(shí)間 AUTOTS,-1 DELTIM,1,0.1,25,1 KBC,0 DDELE,ALL,TEMP !刪除穩(wěn)態(tài)分析中定義的節(jié)點(diǎn)溫度 OUTRES,ALL,ALL SOLVE FINISH 這是鎂合金充入一個(gè)工字型的鑄造結(jié)晶器后冷卻過程中的溫度場(chǎng)分布，是參照書上的例子做出來(lái)的，但是和書上的結(jié)果不一樣，內(nèi)部的鑄件初始溫度竟然是25度。 |
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【答案】應(yīng)助回帖
★ ★ ★
感謝參與，應(yīng)助指數(shù) +1
xiegangmai: 金幣+3, 謝謝參與！ 2013-05-14 21:29:46
感謝參與，應(yīng)助指數(shù) +1
xiegangmai: 金幣+3, 謝謝參與！ 2013-05-14 21:29:46
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試了一下，有不少警告信息，如下： /COM,ANSYS RELEASE 12.0.1 UP20090415 08:52:22 05/14/2013 *** WARNING *** CP = 2.141 TIME= 08:53:11 Material property table exceeds the number of defined temperatures. Number of temperatures is 5. The number of data values is 6. *** WARNING *** CP = 2.266 TIME= 08:53:11 Entity 2 is undefined. The MPDE command is ignored. *** WARNING *** CP = 2.875 TIME= 08:53:15 Unknown NUMCMP label . Command ignored. Valid labels = NODE ELEM KP LINE AREA VOLU MAT TYPE REAL CP CE ALL. *** WARNING *** CP = 3.203 TIME= 08:53:15 Both solid model and finite element model boundary conditions have been applied to this model. As solid loads are transferred to the nodes or elements, they can overwrite directly applied loads. *** WARNING *** CP = 3.391 TIME= 08:53:16 Element 1 references undefined MURX or BH table for material 2. *** WARNING *** CP = 3.406 TIME= 08:53:16 Element 237 references undefined MURX or BH table for material 1. *** WARNING *** CP = 3.766 TIME= 08:53:47 Material property KXX of material 2 of element 158 is evaluated at a temperature of 0, which is below the supplied temperature range. Temperature range checking terminates. *** WARNING *** CP = 3.812 TIME= 08:53:48 There are 4 small equation solver pivot terms. This may be a transitional effect caused by the Newton-Raphson logic. *** WARNING *** CP = 3.875 TIME= 08:53:48 There are 4 small equation solver pivot terms. This may be a transitional effect caused by the Newton-Raphson logic. *** WARNING *** SUPPRESSED MESSAGE CP = 3.938 TIME= 08:53:49 There are 4 small equation solver pivot terms. This may be a transitional effect caused by the Newton-Raphson logic. *** WARNING *** SUPPRESSED MESSAGE CP = 4.000 TIME= 08:53:49 The calculated reference FORCE CONVERGENCE VALUE = 3.234287945E-10 is less than the default minimum of 1 (which can be modified using the MINREF field of the CNVTOL command). Check results carefully. *** WARNING *** CP = 4.156 TIME= 08:54:01 Changing the analysis type is only valid within the first load step. Pressing OK will cause you to exit and re-enter SOLUTION. This will reset the load step count to 1. 警告信息與你的命令流的對(duì)應(yīng)關(guān)系，請(qǐng)見以下命令流中的注解 !*** 部份： fini /clear /filname, mengxiangke /PREP7 ET,1,PLANE13 KEYOPT,1,1,4 MP,DENS,1,8900 !輸入結(jié)晶器的材料性能參數(shù) MP,KXX,1,,3.93 MP,C,1,385 MPTEMP,,,,,,,, MPTEMP,1,30 MPTEMP,2,500 MPTEMP,3,1000 MPTEMP,4,1500 MPTEMP,5,2000 MPDATA,EX,1,,1.03E+011 MPDATA,EX,1,,8.4E+010 MPDATA,EX,1,,2.3E+010 MPDATA,EX,1,,2E+009 MPDATA,EX,1,,2E+008 MPDATA,EX,1,,2E+008 !*** 這一句是多余的，應(yīng)該刪除 MPDATA,NUXY,1,,0.3 MPDATA,NUXY,1,,0.3 MPDATA,NUXY,1,,0.3 MPDATA,NUXY,1,,0.3 MPDATA,NUXY,1,,0.3 MP,ALPX,1,1.66E-5 !輸入鑄件材料性能參數(shù) !鑄件熱傳導(dǎo)系數(shù) MPTEMP,,,,,,,, MPTEMP,1,20 MPTEMP,2,100 MPTEMP,3,200 MPTEMP,4,300 MPTEMP,5,400 MPTEMP,6,425 MPTEMP,7,600 MPTEMP,8,630 MPTEMP,9,700 MPTEMP,10,800 MPDE,KXX,2 !*** 前面沒有定義過材料 2，所以這一句是多余的 MPDATA,KXX,2,,77 MPDATA,KXX,2,,87 MPDATA,KXX,2,,97 MPDATA,KXX,2,,107 MPDATA,KXX,2,,117 MPDATA,KXX,2,,122 MPDATA,KXX,2,,60 MPDATA,KXX,2,,58 MPDATA,KXX,2,,240 MPDATA,KXX,2,,240 MPTEMP,,,,,,,, !鑄件比熱 MPTEMP,1,20 MPTEMP,2,100 MPTEMP,3,200 MPTEMP,4,300 MPTEMP,5,400 MPTEMP,6,600 MPTEMP,7,700 MPDE,C,2 !*** 這一句也是多余的 MPDATA,C,2,,1020 MPDATA,C,2,,1020 MPDATA,C,2,,1100 MPDATA,C,2,,1150 MPDATA,C,2,,1220 MPDATA,C,2,,1400 MPDATA,C,2,,1400 MP,EX,2,45000 !鑄件彈性模量 MP,ALPX,2,26.8E-6 !鑄件線膨脹系數(shù) MP,NUXY,2,0.35 !鑄件泊松比 !*** 后面用到材料 1 和 2 的 MURX or BH，但是這里沒有定義過這兩個(gè)屬性 !*** 后面用到溫度 0 時(shí)的材料屬性 kxx ，但是這里定義的屬性溫度從 20 開始 !幾何建模 !生成矩形面 RECTNG,0,0.05,0,0.01 RECTNG,0.02,0.03,0.01,0.1 RECTNG,0,0.05,0.1,0.11 RECTNG,-0.01,0.06,-0.01,0.02 RECTNG,0.01,0.04,0.02,0.09 RECTNG,-0.01,0.06,0.09,0.12 AADD,1,2,3 !面相加操作 APLOT,ALL AADD,4,5,6 NUMCMP,AREA !壓縮面編號(hào) APLOT,ALL SMRTSIE,4 MAT,2 AMESH,1 !對(duì)面進(jìn)行網(wǎng)格劃分 APLOT,ALL !顯示面 MAT,1 AMESH,2 NUMMRG,NODE !合并相同節(jié)點(diǎn) NUMCMP.LINE !壓縮線段數(shù) !*** numcmp 后面應(yīng)該是逗號(hào) NUMCMP,NODE !壓縮節(jié)點(diǎn)數(shù) SAVE LPLOT,ALL !顯示線段 /PNUM,LINE LSEL,S,LINE,,3,9,2 LSEL,A,LINE,,13,20 SFL,ALL,CONV,454.5,,25 !施加對(duì)流邊界條件 ALLSEL SAVE FINISH /SOLU !進(jìn)入求解器 ANTYPE,TRANS TIMINT,OFF !進(jìn)行穩(wěn)態(tài)分析，確定初始條件 TIME,0.01 DELTIM,0.01 ASEL,S,,,1 NSLA,S,1 D,ALL,TEMP,700 !施加溫度載荷 ALLSEL ASEL,S,,,2 NSLL,S,1 D,ALL,TEMP,25 !施加溫度載荷 ALLSEL LSEL,S,,,21 NSLL,S,1 D,ALL,UY ALLSEL SOLVE !得到初始溫度分布 TIMINT,ON !進(jìn)行瞬態(tài)分析 TIME,120 !設(shè)置計(jì)算終止時(shí)間 AUTOTS,-1 DELTIM,1,0.1,25,1 KBC,0 DDELE,ALL,TEMP !刪除穩(wěn)態(tài)分析中定義的節(jié)點(diǎn)溫度 OUTRES,ALL,ALL SOLVE FINISH ! 這是鎂合金充入一個(gè)工字型的鑄造結(jié)晶器后冷卻過程中的溫度場(chǎng)分布，是參照書上的例子做出來(lái)的， ! 但是和書上的結(jié)果不一樣，內(nèi)部的鑄件初始溫度竟然是25度。 !*** 此外，求解時(shí)出現(xiàn)小主元，可能約束不足 !*** 由于有上述問題，是求解結(jié)果可能是不對(duì)的。 |
2樓2013-05-14 10:15:21
3樓2018-10-26 14:39:32
shgao20
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4樓2018-10-27 08:42:08
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