Vibrations232 - %Dry friction force figure(2) Fd =...

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Contents Problem 2.32 (Ehsan Mohammadi) Problem 2.32 (Ehsan Mohammadi) clc;clear %F(dx) = c*dx (2.46) %F(dx) = u*m*g*sgn(dx) (2.52) %F(dx) = cd*dx^2*sgn(dx) (2.54) %F(dx) = k*pi*Bn*sgn(dx)*abs(dx) (2.57) %For all of the cases we devied both sides of the functions by the %constants so that the function is normilized. t=0:pi/100:2*pi; x=(0.4)*sin(2*pi*t); dx=0.4*2*pi*cos(2*pi*t); %Viscous-damper force figure(1) Fv=dx; plot(t,Fv); axis([0 6 -3 3]) xlabel('Time') ylabel('Force') Title('Viscous-damper force')
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Unformatted text preview: %Dry friction force figure(2) Fd = sign(dx); plot(t,Fd); axis([0 6 -1.1 1.1]) xlabel('Time') ylabel('Force') title('Dry friction force') %Fluid-damping force figure(3) Ff=(dx/abs(dx))*dx; plot(t,Ff) axis([0 6 -.15 .15]) xlabel('Time') ylabel('Force') title('Fluid-damping force') %Hysteretic force figure(4) Fh=abs(x)*(dx/abs(dx)); plot(t,Fh) axis([0 6 0 .018]) xlabel('Time') ylabel('Force') title('Hysteretic force') Published with MATLABĀ® 7.8...
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This note was uploaded on 02/13/2011 for the course ENME 361 taught by Professor Yoo during the Spring '11 term at Maryland.

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Vibrations232 - %Dry friction force figure(2) Fd =...

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