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花殤流云新蟲 (著名寫手)
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[求助]
可靠度模擬求助
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最近在做可靠度分析,但是運行完了之后,在畫柱狀分析圖的時候總是出現(xiàn) “ERROR in EvalHistogramBars. Number of data points found is 0. Number data points expected is 2.” 請大家指教究竟是怎么回事。 命令流: Finish /clear *create,pdspavement,mac *set,ex1,7000e6 /prep7 et,1,solid185 !定義單元 mp,ex,1,ex1 mp,prxy,1,0.35 mp,dens,1,2100 l=4 !...........x方向?qū)挾?br /> w=5 !...........z方向長度 wh3=0.04 !...........y方向高度 Side_kuandu=18E-2 !荷載區(qū)域邊長(18*20cm) Side_xingche=20E-2 blc4,0,0,l,wh3,w !*************荷載區(qū)域******* * b=Side_kuandu+0.3 !............荷載中心距離 d=Side_kuandu !............荷載邊長 a=Side_xingche allsel,all wpave,0,h, w/2+5*a/2 vsbw,all wpave,0,h, w/2-5*a/2 vsbw,all WPROTA,0,0,90 wpave,l/2-b/2-d/2,h,0 vsbw,all wpave,l/2-b/2+d/2,h,0 vsbw,all wpave,l/2+b/2-d/2,h,0 vsbw,all wpave,l/2+b/2+d/2,h,0 vsbw,all wprota,0,0,-90 wpave,0,0,0 allsel,all vglue,all vsel,s,loc,y,0,wh3 VATT,1,,1,0 !*************劃分網(wǎng)格********* lsel,s,length,,d lesize,all,,,4,,,,,1 lsel,s,length,,b-d LESIZE,all,,,2,,,,,1 lsel,s,length,,l/2-b/2-d/2 LESIZE,all,,,10,,,,,1 lsel,s,length,,w/2-5*a/2 LESIZE,all,,,14,,,,,1 lsel,s,length,,5*a LESIZE,all,,,20,,,,,1 lsel,s,length,,wh3 LESIZE,all,,,2,,,,,1 !............SMA-13 2份 MSHAPE,0,3d MSHKEY,1 allsel,all vmesh,all nsel,s,loc,x,0 !路面約束 nsel,a,loc,x,l d,all,ux,0 nsel,s,loc,z,0 nsel,a,loc,z,w d,all,uz,0 nsel,s,loc,y,0 d,all,all,0 Nsel,s,loc,x, l/2-b/2-d/2, l/2-b/2+d/2 Nsel,r,loc,y,wh3 Cm,movend1,node Nsel,s,loc,x, l/2+b/2-d/2, l/2+b/2+d/2 Nsel,r,loc,y,wh3 Cm,movend2,node po=0.7E6 !靜荷載(Pa) elemdl=0.1 !每2個單元的長度 outres,all,all !輸出所有荷載步的結(jié)果信息 NROPT,init !use the previously computed matrix(initial-stiffness) Sstif,off !關(guān)閉應(yīng)力剛化效應(yīng) finish !****************施加荷載************* /solu ANTYPE,trans,new !分析類型為瞬態(tài) Time,1 kbc,1 !加載為階躍方式 !*****************添加荷載*****************左側(cè) Cmsel,s,movend1,node Nsel,r,loc,z, 20*elemdl,22*elemdl Esln,s,1 Esel,r,type,,2 sfe,all,1,pres,0, po !*****************添加荷載*****************右側(cè) Cmsel,s,movend2,node Nsel,r,loc,z, 20*elemdl,22*elemdl Esln,s,1 Esel,r,type,,2 sfe,all,1,pres,0, po allsel,all solve Save Finish /post1 Set,first Etable,s_y,s,y Etable,volu,volu Allsel,all Esel,r,mat,,1 Nsort,s,int,0,0 *get,max_int_SMA13,sort,0,max *get,max_int_node_SMA13,sort,0,imax Nsel,s,,,max_int_node_SMA13 Esln,s,0 *get,elem1,elem,0,num,max *get,elem2,elem,0,num,min *get,sig1,elem,elem1,etab,s_y *get,sig2,elem,elem2,etab,s_y Ssum *get,tvol,ssum,,item,volu Finish *end !結(jié)束宏定義 /input,pdspavement,mac !執(zhí)行宏操作 /pds !進入可靠性分析模塊 Pdanl,pdspavement,mac !指定分析文件 Pdvar,ex1,log1,7000e6,0.13 !服從對數(shù)正態(tài)分布 Pdvar,sig1,resp !輸出變量 Pdvar,sig2,resp Pdvar,tvol,resp Pdmeth,mcs,dir !設(shè)置可靠度分析方法,采用monte carlo抽樣法 Pddmcs,100,,all,,,,1234567 !設(shè)置分析循環(huán)次數(shù),初始化種子值1234567 Pdexe,mcspavement !執(zhí)行可靠度分析 Pdsens,mcspavement,tvol,both,rank,0.025 !創(chuàng)建敏感性圖表 Pdshis,mcspavement,sig1,samp !sig1抽樣過程顯示 Pdhist,mcspavement,sig2 !sig2取值分布柱狀圖 Pdcdf,mcspavement,sig2 !繪圖顯示sig2分布函數(shù) /pds Rsfit,rsmpavement,mcspavement,sig1,quad,none,0,fsr,0.95 !擬合響應(yīng)面方程 Rsprnt,rsmpavement,sig1,no !查看響應(yīng)面方程 |
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