Objectives: Develop a GUI that finds the steady?state displacements of a spring?

Question

Objectives: Develop a GUI that finds the steady?state displacements of a spring?mass system.

m[(d^2)(x)]/[(d^2)(t)] = Fd - Fu

t arrow pointing right >> infintiy: [(d^2)(x)]/[(d)(t^2)] = 0 >> Fd - Fu = 0

This is the link of the image

https://www.dropbox.com/s/j0oqcet9m5mmr2d/Project%201%20-%20Fall%2014.pdf?dl=0

Minimum Features:

GUI should handle any number of mass and springs

GUI reads at least: masses (mi), mass position of zero elongation (x0,i) spring connections, spring

constants (kj), g sliding bar(enable analysis at different g forces)

Sets up and solves systems of linear equations for spring?mass system.

Displays a diagram of the system, including normalized box size based on mass and color?coded

mass based on final displacement

Bar plot with the displacement of each mass

Saves the output in a text file.

Scripts should be well?documented.

Allowed MATLAB functions: plot (and plot related functions), get, set, rectangle, round, msgbox,

disp, fprintf, format, input, ones, zeros, ceil, floor, strcmp. You are not allowed to use the

Explanation / Answer

clc;
close all;
clear all;

N=input(' input number of mass points ');

K=zeros(1,N);

mass=zeros(N,N);
stiff=zeros(N,N);

for j=1:N;
mass(j)=input('mass ');
x_0(j)=input('intial position ');
M(j)=input('number of springs ');
for i=1:M(j);
spring_coeff(j,i)=input('spring coeffcient');
end
K(1,j)=sum(spring_coeff(j,:));

end

for j=1:N;
K(1,j)=sum(spring_coeff(j,:));
for i=1:N;
if i==j
mass(i,j)=M(j);
else
mass(i,j)=0;
end
if i==j;
if i==1;
stiff(i,j)=-K(1,j)-K(1,j+1)
K(1,j+1)

stiff(i,j+1)=K(1,j+1);
elseif i==N
stiff(i,j)=-K(1,j);
stiff(i,j-1)=-K(1,j);
else
stiff(i,j)=-K(1,j)-K(1,j+1);
stiff(i,j-1)=K(1,j);
stiff(i,j+1)=K(1,j+1);
end
end
end
end

follow the link for gui

http://www.mathworks.in/discovery/matlab-gui.html

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