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diff --git a/1835/CH1/EX1.4/Ex1_4.sce b/1835/CH1/EX1.4/Ex1_4.sce new file mode 100755 index 000000000..3dc91d80a --- /dev/null +++ b/1835/CH1/EX1.4/Ex1_4.sce @@ -0,0 +1,34 @@ +//CHAPTER 1 ILLUSRTATION 4 PAGE NO 17
+//TITLE:Basic kinematics
+//Figure 1.18,1.19
+clc
+clear
+pi=3.141
+Nao=180// speed of the crank in rpm
+wAO=2*pi*Nao/60// angular speed of the crank in rad/s
+AO=.5// crank length in m
+AE=.5
+Vao=wAO*AO// velocity of A in m/s
+//================================
+Vb1=8.15// velocity of piston B in m/s by measurment from figure 1.19
+Vba=6.8// velocity of B with respect to A in m/s
+AB=2// length of connecting rod in m
+wBA=Vba/AB// angular velocity of the connecting rod BA in rad/s
+ae=AE*Vba/AB// velocity of point e on the connecting rod
+oe=8.5// by measurement velocity of point E
+Do=.05// diameter of crank shaft in m
+Da=.06// diameter of crank pin in m
+Db=.03// diameter of cross head pin B m
+V1=wAO*Do/2// velocity of rubbing at the pin of the crankshaft in m/s
+V2=wBA*Da/2// velocity of rubbing at the pin of the crank in m/s
+Vb=(wAO+wBA)*Db/2// velocity of rubbing at the pin of cross head in m/s
+ag=5.1// by measurement
+AG=AB*ag/Vba// position and linear velocity of point G on the connecting rod in m
+//===============================
+printf('Velocity of piston B= %.3f m/s\n Angular velocity of connecting rod= %.3f rad/s\n velocity of point E=%.1f m/s\n velocity of rubbing at the pin of the crankshaft=%.3f m/s\n velocity of rubbing at the pin of the crank =%.3f m/s\n velocity of rubbing at the pin of cross head =%.3f m/s\n position and linear velocity of point G on the connecting rod=%.3f m',Vb1,wBA,oe,V1,V2,Vb,AG)
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