ASE 311 HW #11 part 2

ASE 311 HW #11 part 2 - Usman Ansari ASE 311 HW#11...

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Unformatted text preview: Usman Ansari ASE 311 HW #11 1.) (massSpring 2) function [ti,yi] = generalODE(dydt, tspan, y0, nSteps) z = length(tspan); ti = linspace(tspan(1), tspan(z), nSteps+1); h=(tspan(z)-tspan(1))/nSteps; yi(1,:)=y0; for i=1:nSteps k1 = dydt(ti(i),yi(i,:)); k2 = dydt(ti(i) + 0.5*h, yi(i,:)' + 0.5*h*k1); k3 = dydt(ti(i) + 0.5*h, yi(i,:)' + 0.5*h*k2); k4 = dydt(ti(i) + h, yi(i,:)' + h*k3); yi(i+1,:) = yi(i,:) + h/6*(k1+2*k2+2*k3+k4)'; end figure(4) plot(ti,yi(:,1), ti,yi(:,3), 'o' ) figure(2) plot(ti,yi(:,2), ti,yi(:,4), 'o' ) figure(3) plot(yi(:,1),yi(:,2)) [ti,yi] = generalODE(@massSpring2, [0 2*pi], [2;0;0;0], 100) 1 2 3 4 5 6 7-4-3-2-1 1 2 3 4 5 6 t x P os itions m as s 1 m as s 2 Usman Ansari ASE 311 HW #11 1 2 3 4 5 6 7-12-10-8-6-4-2 2 4 6 8 t v veloc ity m as s 1 m as s 2 Usman Ansari ASE 311 HW #11-2-1.5-1-0.5 0.5 1 1.5 2-4-3-2-1 1 2 3 4 x v phase plot Usman Ansari ASE 311 HW #11-2-1.5-1-0.5 0.5 1 1.5 2-4-3-2-1 1 2 3 4 5 6 pos ition m as s 1 position mass2 phas e plot (x m as s 1 vs . x m as s 2) Usman Ansari ASE 311 HW #11 2.) function [ti,yi] = generalODE(dydt, tspan, y0, nSteps) z = length(tspan); ti = linspace(tspan(1), tspan(z), nSteps+1); h=(tspan(z)-tspan(1))/nSteps; yi(1,:)=y0; for i=1:nSteps k1 = dydt(ti(i),yi(i,:)); k2 = dydt(ti(i) + 0.5*h, yi(i,:)' + 0.5*h*k1); k3 = dydt(ti(i) + 0.5*h, yi(i,:)' + 0.5*h*k2);k3 = dydt(ti(i) + 0....
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This note was uploaded on 02/13/2010 for the course ASE 311 taught by Professor Kraczek during the Spring '08 term at University of Texas.

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ASE 311 HW #11 part 2 - Usman Ansari ASE 311 HW#11...

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