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Diffstat (limited to '3532/CH4/EX4.17/Ex4_17.sce')
| -rw-r--r-- | 3532/CH4/EX4.17/Ex4_17.sce | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/3532/CH4/EX4.17/Ex4_17.sce b/3532/CH4/EX4.17/Ex4_17.sce new file mode 100644 index 000000000..827e5825e --- /dev/null +++ b/3532/CH4/EX4.17/Ex4_17.sce @@ -0,0 +1,19 @@ +clc
+clear
+mprintf('Mechanical vibrations by G.K.Grover\n Example 4.11.3\n')
+//given data
+J=0.049//moment of inertia in kg-m^2
+Kt=0.98//stiffness in N-m/rad
+Ct=0.11//damping coefficient in N-m_sec/rad
+N=15//R.P.M
+thetaRD=2//relative amplitude between ring and shaft in degrees
+//calculations
+W=N*2*%pi/60 //frequency of vibrating shaft in rad/sec
+Wn=sqrt(Kt/J) //natural freqency in rad/sec
+zeta=(Ct/(2*sqrt(Kt*J))) //damping factor
+thetaRR=(thetaRD/(57.3)) //relative amplitude in radians
+bet=(W/Wn)
+thetamax=thetaRR*((sqrt((1-bet^2)^2+(2*zeta*bet)^2)/bet^2))
+maxacc=(W^2)*thetamax
+//output
+mprintf('The maximum acceleration of the shaft is %4.4f rad/(sec^2)',maxacc)
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