initial commit / add all books

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+//To find maximum power transmitted

+clc

+//Given:

+n1=3, n2=2, n=4, mu=0.3

+d1=240, r1=d1/2, d2=120, r2=d2/2 //mm

+P=25*1000 //W

+N=1575 //rpm

+//Solution:

+//Calculating the angular speed of the shaft

+omega=2*%pi*N/60 //rad/s

+//Calculating the torque transmitted

+T=P/omega //N-m

+//Calculating the mean radius of the contact surface, for uniform pressure

+R=2/3*(r1^3-r2^3)/(r1^2-r2^2)/1000 //m

+//Calculating the total spring load

+W1=T/(n*mu*R) //N

+//Calculating the maximum power transmitted:

+//Given:

+ns=6 //Number of springs

+c=8 //Contact surfaces of the spring

+w=1.25 //Wear on each contact surface, mm

+k=13*1000 //Stiffness of each spring, N/m

+//Calculating the total wear

+Tw=c*w/1000 //Total wear, m

+//Calculating the reduction in spring force

+Rs=Tw*k*ns //N

+//Calculating the new axial load

+W2=W1-Rs //N

+//Calculating the mean radius of the contact surfaces for uniform wear

+R=(r1+r2)/(2*1000) //m

+//Calculating the torque transmitted

+T=n*mu*W2*R //N-m

+//Calculating the maximum power transmitted

+P=T*omega/1000 //kw

+//Results:

+printf("\n\n Total spring load, W = %d N.\n",W1)

+printf(" Maximum power that can be transmitted, P = %.2f kW.\n\n",P)
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