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Diffstat (limited to '3772/CH16/EX16.1')
-rw-r--r-- | 3772/CH16/EX16.1/Ex16_1.sce | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/3772/CH16/EX16.1/Ex16_1.sce b/3772/CH16/EX16.1/Ex16_1.sce new file mode 100644 index 000000000..d53e30304 --- /dev/null +++ b/3772/CH16/EX16.1/Ex16_1.sce @@ -0,0 +1,71 @@ +// Problem 16.1,Page no.366 + +clc;clear; +close; + +t=1 //cm //thickness of plates +sigma_t=150 //MPa //Working stress +sigma_c=212.5 //MPa //crushing stress +sigma_s=94.5 //MPa //shearing stress + +//Calculation (Part-1) + +//P_s=%pi*4**-1*d**2*sigma_s //N //Shearing strength +//After substituting values and further simplifying we get +//P_s=%pi*4**-1*d**2*94.5*10**6 //N + +//P_c=d*t*sigma_c //N //crushing strength +//After substituting values and further simplifying we get +//P_c=d*1*10**-2*212.5*10**6 //N + +//P_t=(p-d)*t*sigma_t //N //Strength of plate in tearing +//After substituting values and further simplifying we get +//P_t=(p-d)*1*10**-2*150*10**6 + +//Now comparing strengths +//P_s=P_c +//%pi*4**-1*d**2*94.5*10**6=d*1*10**-2*212.5*10**6 +d=1*10**-2*212.5*10**6*(%pi*4**-1*94.5*10**6)**-1 //m //Diameter of rivet + +//Now comparing strengths +//P_t=P_c +//(p-d)*1*10**-2*150*10**6=d*1*10**-2*212.5*10**6 +//Afte further simplifying equation we get +//(p-d)=1.4166*d +p=(1.4166*d+d) //m //%pitch length of rivet + +P=p*sigma_t*10**6*t*10**-2 //N //Strength of solid plate //Answer for strength of solid plate is incorrect in textbook + +rho=(p-d)*p**-1*100 //Efficiency of the joint //Notification has been changed + +//Calculation (Part-2) + +//P_s=2*%pi*4**-1*d**2*sigma_s //N //Shearing strength +//After substituting values and further simplifying we get +//P_s=2*%pi*4**-1*d**2*94.5*10**6 //N + +//P_c=2*d*t*sigma_c //N //crushing strength +//After substituting values and further simplifying we get +//P_c=2*d*1*10**-2*212.5*10**6 //N + +//P_t=(p-d)*t*sigma_t //N //Strength of plate in tearing +//After substituting values and further simplifying we get +//P_t=(p-d)*1*10**-2*150*10**6 + +//Now comparing strengths +//P_s=P_c +//2*%pi*4**-1*d**2*94.5*10**6=2*d*1*10**-2*212.5*10**6 +d=1*10**-2*212.5*10**6*(%pi*4**-1*94.5*10**6)**-1 //m //Diameter of rivet + +//Now comparing strengths +//P_t=P_c +//(p-d)*1*10**-2*150*10**6=2*d*1*10**-2*212.5*10**6 +//Afte further simplifying equation we get +//(p-d)=2.833*d +p_1=(2.833*d+d) //m //%pitch length of rivets in shearing strength of plate //Notification for %pitch length has been changed + +rho_2=(p_1-d)*p_1**-1*100 //Efficiency of the joint //Notification has been changed + +//Result +printf("The Efficiency of joint in single rivet is %.2f %%",rho) +printf("\n The Efficiency of joint in double rivet is %.2f %%",rho_2) |