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Originally posted by newtonnapo at 2011-06-23 12:32:28:
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3Â¥2011-06-23 13:27:16
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function dyeilddt=ivpodefun(t,yeild)
format long
sum=0;
feed=cell(1,2);
feed(1,1)={[1 1 0 0;2 1 0 0;3 1 0 0;4 1 0 0;5 1 0 0;6 1 0 0;7 1 0 0;8 1 0 0;9 1 0 0;10 1 0 0;
    11 1 0 0;12 1 0 0;13 1 0 0;14 1 0 0;15 1 0 0;16 1 0 0;17 1 0 0;18 1 0 0;19 1 0 0;20 1 0 0;
    21 1 0 0;22 1 0 0;23 1 0 0;24 1 0 0;25 1 0 0;26 1 0 0;27 1 0 0;28 1 0 0;29 1 0 0;30 1 0 0;
    31 1 0 0;32 1 0 0;33 1 0 0;34 1 0 0;35 1 0 0;36 1 0 0;37 1 0 0;38 1 0 0;39 1 0 0]};
feed(1,2)={[2 0 0 0;3 0 0 0;4 0 0 0;5 0 0 0;6 0 0 0;7 0 0 0;8 0 0 0;9 0 0 0;10 0 0 0;
    11 0 0 0;12 0 0 0;13 0 0 0;14 0 0 0;15 0 0 0;16 0 0 0;17 0 0 0;18 0 0 0;19 0 0 0;20 0 0 0;
    21 0 0 0;22 0 0 0;23 0 0 0;24 0 0 0;25 0 0 0;26 0 0 0;27 0 0 0;28 0 0 0;29 0 0 0;30 0 0 0;
    31 0 0 0;32 0 0 0;33 0 0 0;34 0 0 0;35 0 0 0;36 0 0 0;37 0 0 0;38 0 0 0;39 0 0 0]};
yeild=xlsread('F:\crack\1','Sheet1','F6:F82');
k=xlsread('F:\crack\1','Sheet1','A2:A704');
dyeilddt=zeros(77,1);
for i=3:1:39
    for j=1:1:38
    if i>j+1
        sum=sum+1;
    dyeilddt(i)=dyeilddt(i)-k(sum)*yeild(i);
    dyeilddt(j)=dyeilddt(j)+k(sum)*yeild(i);
    dyeilddt(38+i-j)=dyeilddt(38+i-j)+k(sum)*yeild(i);
        end
    end
end


function [sol]=cracking(t)
format long
sum=0;
feed=cell(1,2);
feed(1,1)={[1 1 0 0;2 1 0 0;3 1 0 0;4 1 0 0;5 1 0 0;6 1 0 0;7 1 0 0;8 1 0 0;9 1 0 0;10 1 0 0;
    11 1 0 0;12 1 0 0;13 1 0 0;14 1 0 0;15 1 0 0;16 1 0 0;17 1 0 0;18 1 0 0;19 1 0 0;20 1 0 0;
    21 1 0 0;22 1 0 0;23 1 0 0;24 1 0 0;25 1 0 0;26 1 0 0;27 1 0 0;28 1 0 0;29 1 0 0;30 1 0 0;
    31 1 0 0;32 1 0 0;33 1 0 0;34 1 0 0;35 1 0 0;36 1 0 0;37 1 0 0;38 1 0 0;39 1 0 0]};
feed(1,2)={[2 0 0 0;3 0 0 0;4 0 0 0;5 0 0 0;6 0 0 0;7 0 0 0;8 0 0 0;9 0 0 0;10 0 0 0;
    11 0 0 0;12 0 0 0;13 0 0 0;14 0 0 0;15 0 0 0;16 0 0 0;17 0 0 0;18 0 0 0;19 0 0 0;20 0 0 0;
    21 0 0 0;22 0 0 0;23 0 0 0;24 0 0 0;25 0 0 0;26 0 0 0;27 0 0 0;28 0 0 0;29 0 0 0;30 0 0 0;
    31 0 0 0;32 0 0 0;33 0 0 0;34 0 0 0;35 0 0 0;36 0 0 0;37 0 0 0;38 0 0 0;39 0 0 0]};
yeild=xlsread('F:\crack\1','Sheet1','F6:F82');
k=xlsread('F:\crack\1','Sheet1','A2:A704');
t=4;time=[0,t];
options=odeset('outputFcn',@odeplot);
sol=ode45(@ivpodefun,time,yeild,options);

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³ôË®¹µ: ÇëʹÓá°ÒýÓûظ´¡±£¬·ñÔò±ðÈË¿´²»µ½ÄãµÄ»Ø¸´~~ 2011-06-25 19:57:55
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newtonnapo

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ÒýÓûØÌû:
Originally posted by fcxh1111 at 2011-06-25 10:10:51:
http://muchong.com/bbs/viewthread.php?tid=1818171

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Originally posted by newtonnapo at 2011-06-26 12:33:09:
ÎÒµÄÃ×È˲»ºÃÓã¬ÄÜ·¢ÎÒÂð£¬newton123456789@126.com

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