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Diffstat (limited to '2921/CH4/EX4.3/Ex4_3.sce')
-rwxr-xr-x | 2921/CH4/EX4.3/Ex4_3.sce | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/2921/CH4/EX4.3/Ex4_3.sce b/2921/CH4/EX4.3/Ex4_3.sce new file mode 100755 index 000000000..b1e9d0f19 --- /dev/null +++ b/2921/CH4/EX4.3/Ex4_3.sce @@ -0,0 +1,25 @@ +clc;
+clear;
+mprintf('MACHINE DESIGN\n Timothy H. Wentzell, P.E.\n Example 4.3 Page no 68');
+
+P=50; //[hp] Power transmitted
+N=300; //[rpm] Speed
+D=10; //[in] Effective pitch diameter of sprocket
+d=1; //[in] Diameter of shaft from figure 4.3
+Z=(%pi*d^3)/16; //[in^3] Section modulus of shaft
+A=(%pi*d^2)/4; //[in^2] Area of cross section
+
+T=(63000/N)*P; //[lb*in] Torque required to transmit power
+F=T/(D/2); //[lb] Driving force in chain
+
+Ss=F/A; //[lb/in^2] Shear stress in shaft
+
+St=T/Z; //[lb/in^2] Torsional stress in shaft
+
+S=Ss+St; //[lb/in^2] Resultant stress
+
+//Note-There is mistake in addition of Ss and St.
+
+//This value would be compared to shear stress allowable for shaft material
+
+mprintf('\n\n The combined stress in 1 inch diameter shaft is %f lb/in^2.',S);
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