From f35ea80659b6a49d1bb2ce1d7d002583f3f40947 Mon Sep 17 00:00:00 2001 From: prashantsinalkar Date: Tue, 10 Oct 2017 12:38:01 +0530 Subject: updated the code --- 278/CH9/EX9.4/ex_9_4.sce | 54 ++++++++++++++++++++++++------------------------ 1 file changed, 27 insertions(+), 27 deletions(-) (limited to '278/CH9/EX9.4/ex_9_4.sce') diff --git a/278/CH9/EX9.4/ex_9_4.sce b/278/CH9/EX9.4/ex_9_4.sce index ba8a8e84a..f7a0a38c4 100755 --- a/278/CH9/EX9.4/ex_9_4.sce +++ b/278/CH9/EX9.4/ex_9_4.sce @@ -1,28 +1,28 @@ -//find efficiency -clc -//solution -//given -t=13//mm -ft=80//N/mm^2 -T=60//N/mm^2 -fc=120//N/mm^2 -pi=3.14 -d=6*sqrt(t)//mm//dia of rivet -//use standard value from table 9.3 -//let p be the picth of rivets -//Pt=(p-d)*t*ft=(p-23)*1040//N//tearing resistance of plate -Ps=2*(pi/4)*d^2*T//N//shearing resistance of rivet -//p-23=Ps/1040 -p=23+(Ps/1040)//mm -//check the limits,if p<=pmax..then it is safe design -//pmax=C*t+41.28//mm=75.28mm which is more then p -pb=0.33*p+ 0.67*d//distance btw rivets -m=1.58*d//margin -Pt=(p-d)*t*ft//N//tearing resistance of plate -Ps=(2*pi/4)*d^2*T//N//shearing resistance of rivet -Pc=2*d*t*fc//N//crushing resistance of rivet -P=p*t*ft//N//strength of the unriveted -//eff=(least of Pt,Ps,Pc)/P -printf("the value of forces are,%f N\n,%f N\n,%f N\n",Pt,Ps,Pc) -eff=Ps/P//least is Ps + +clc +//solution +//given +t=13//mm +ft=80//N/mm^2 +T=60//N/mm^2 +fc=120//N/mm^2 +pi=3.14 +d=6*sqrt(t)//mm//dia of rivet +//use standard value from table 9.3 +//let p be the picth of rivets +//Pt=(p-d)*t*ft=(p-23)*1040//N//tearing resistance of plate +Ps=2*(pi/4)*d^2*T//N//shearing resistance of rivet +//p-23=Ps/1040 +p=23+(Ps/1040)//mm +//check the limits,if p<=pmax..then it is safe design +//pmax=C*t+41.28//mm=75.28mm which is more then p +pb=0.33*p+ 0.67*d//distance btw rivets +m=1.58*d//margin +Pt=(p-d)*t*ft//N//tearing resistance of plate +Ps=(2*pi/4)*d^2*T//N//shearing resistance of rivet +Pc=2*d*t*fc//N//crushing resistance of rivet +P=p*t*ft//N//strength of the unriveted +//eff=(least of Pt,Ps,Pc)/P +printf("the value of forces are,%f N\n,%f N\n,%f N\n",Pt,Ps,Pc) +eff=Ps/P//least is Ps printf("the eff is,%f",eff) \ No newline at end of file -- cgit