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Ö±½Ó¿´³ÌÐò¡£¡£¡£¡£ function ctn y0=[0;0]; %tspan=[0:2.8202*10^(-5)/100:2.8202*10^(-5)]; tspan=[0:2.8202*10^(-6)/100:2.8202*10^(-6)]; [t,y]=ode45('funb',tspan,y0,[]); x=0:0.33/100:0.33; a=length(t); b=length(x); for i=1:a for j=1:b z(j,i)=2.7786*sin(2*pi/0.33*x(j)).*y(i,1); end end mesh(t,x,z); xlabel('t'),ylabel('x'),zlabel('z') function equ1=funb(t,y,flag) equ1=[y(2);(-1.6561*10^5*y(2)-3.2257*10^10*y(1)+(3.5454e+008./0.1295)*2.7786*sin(pi/0.33*8.2980*10^10*t^2))] ![]() ![]() ![]() ![]() ![]() function cttttn w0=[0;0]; %tspan=[0:2.8202*10^(-5)/100:2.8202*10^(-5)]; tspan=[0:2.8202*10^(-6)/100:2.8202*10^(-6)]; [t,w]=ode45('funa',tspan,w0,[]); x=0:0.33/100:0.33; a=length(t); b=length(x); for i=1:a for j=1:b z(j,i)= 2.7786*sin(pi/0.33*x(j)).*w(i,1); end end mesh(t,x,z); xlabel('t'),ylabel('x'),zlabel('z') function equ1=funa(t,w,flag) equ1=[w(2);(-1.6561*10^5*w(2)-3.2255*10^10*w(1)+(3.5454e+008./0.2028)*2.7786*sin(pi/0.33*0.5*8.2980*10^10*t^2))] ÉÏÏÂÊÇÁ½¸ö³ÌÐò£¬µ«ÊÇÎÒÏë°ÑÕâ¸öͼ»µ½Ò»Æð£¬¾ÍÊÇÈÃÁ½¸öz(j,i)µþ¼Ó£¬±äÁ¿²»±ä£¬ÎÒÊÔÁËÊÔ£¬²»³öͼ£¬Ò²²»ÏÔʾÄĶù³ö´í£¬¾Í³öÀ´Ò»¶ÑÊý¡£¡£¡£ÇëÎÊÈçºÎÅªÄØ£¿ |
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robert2020(½ð±Ò+1):¶àлÌṩ½¨Ò飡 2010-05-29 08:21:38
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