1. Lab-23 Chp10 Beam VM Diagrams By Calculus
Engineering 36
Lab-23 Chp10 Beam VM Diagrams By Calculus
Bruce Mayer, PE
Licensed Electrical & Mechanical Engineer

14. MATLAB V&M Diagrams

15. MatLab Code – Part-1 % Bruce Mayer, PE * 31Jul07
% ENGR36 * problem
% file = Prob10_1_28_VM_Plot.m %
% Find V & M functions by calculus
% Plot Using this File %%
clear % clears memory
% Calculate PieceWise Shear-Force Functions
x1 = 0:.1:4;
v1= -12.5*x1.^ ;
x2 = 4:0.1:8;
v2 = -100*x ;
x3 = 8:0.1:10;
v3 = *(x3./x3)
x4 = 10:0.1:12;
v4 = 300*(x4./x4);
x5 = 12.01; v5 = 0;
% Combine the pieces by appending
xv = [x1 x2 x3 x4 x5];
v = [v1 v2 v3 v4 v5];
% plot v(x); use formating tools to adjust appearance
plot(xv,v) ,xlabel('x (ft)'),ylabel('V (lbs)'), title('P Vertically Loaded Beam'), grid
display('Shear-force plot complete; hit any key to continue')
pause

16. MatLab Code – Part-2 % Calculate PieceWise Bending-Moment Functions
m1 = -25*x1.^3/ *x1;
m2 = -50*x2.^ *x ;
m3 = *x ;
m4 = 300*x4-3600;
% Combine the pieces by appending
xm = [x1 x2 x3 x4];
m = [m1 m2 m3 m4];
% plot v(x); use formating tools to adjust appearance
plot(xm,m) ,xlabel('x (ft)'),ylabel('M (ft-lbs)'), title('P Vertically Loaded Beam'), grid