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Diffstat (limited to '3250/CH3/EX3.7/Ex3_7.sce')
-rwxr-xr-x | 3250/CH3/EX3.7/Ex3_7.sce | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/3250/CH3/EX3.7/Ex3_7.sce b/3250/CH3/EX3.7/Ex3_7.sce new file mode 100755 index 000000000..82270e06f --- /dev/null +++ b/3250/CH3/EX3.7/Ex3_7.sce @@ -0,0 +1,23 @@ +clc +// Given that +Di = 12.7 // Intial diameter in mm +Df = 10.2 // Final diameter in mm +v = 90 // Drawn speed in m/min +alpha=6 // Half angle of dia in degree +mu = 0.1// Cofficient of friction between the job and the dies +Y = 207 // Tensile yield stress of the steel specimen in N/mm^2 +Y_ = 414 // Tensile yield stress of the similar specimen at strain 0.5 in N/mm^2 +e = 0.5 // Strain +// Sample Problem 7 on page no. 126 +printf("\n # PROBLEM 3.7 # \n") +e_ =2* log(Di/Df) +Y_e = Y + (Y_ - Y)*e_/e +Y__ = (Y+Y_e)/2 +phi = 1 + (mu/tand(alpha)) +Y_f = Y__ * ((phi/(phi-1)) *(1-((Df/Di)^(2*(phi-1))))) +p = Y_f * (%pi/4)*(Df^2)*v/60 +Dmax = 1- (1/(phi^(1/(phi-1)))) +printf("\n Drawing power = %f kW, \n The maximum passible reduction with same die = %f mm",p/1000,Dmax) + + + |