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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /1325/CH6/EX6.7 | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '1325/CH6/EX6.7')
| -rw-r--r-- | 1325/CH6/EX6.7/6_7.PNG | bin | 0 -> 104326 bytes | |||
| -rw-r--r-- | 1325/CH6/EX6.7/6_7.sce | 29 |
2 files changed, 29 insertions, 0 deletions
diff --git a/1325/CH6/EX6.7/6_7.PNG b/1325/CH6/EX6.7/6_7.PNG Binary files differnew file mode 100644 index 000000000..ebe05086a --- /dev/null +++ b/1325/CH6/EX6.7/6_7.PNG diff --git a/1325/CH6/EX6.7/6_7.sce b/1325/CH6/EX6.7/6_7.sce new file mode 100644 index 000000000..d6a3e95dc --- /dev/null +++ b/1325/CH6/EX6.7/6_7.sce @@ -0,0 +1,29 @@ +//to find the turning moment on the cranckshaft when a) friction at the bearing is neglected b)when u=0.5
+clc
+//given
+P=6 //tons
+u=0.05
+theta=60//degrees
+CP=80
+Stroke=16//in
+OC=Stroke/2
+r1=7//in
+r2=15//in
+r3=4.4//in
+//Radius of friction circle
+ro=u*r1
+rc=u*r2
+rp=u*r3
+phi=asind(OC*sin((theta)*%pi/180)/CP)
+alpha=asind((rc+rp)/CP)
+//a) without friction
+Qa=P/cos((phi)*%pi/180)
+Xa=OC*cos((30-phi)*%pi/180)//tensile force transmitted along the eccentric rod when friction is NOT taken into account
+Ma=Qa*Xa/12
+//b) with friction
+Qb=P/cos((phi-alpha)*%pi/180)//tensile force transmitted along the eccentric rod when friction is taken into account
+Xb=OC*cos((30-(phi-alpha))*%pi/180)-(rc+ro)
+Mb=Qb*Xb/12
+n=Mb/Ma
+printf("Turning moment applied to OC:\na)Without friction= %.2f ton.ft\nb)With friction(u=0.05)= %.2f ton.ft",Ma,Mb)
+printf("\nThe efficiency of the mechanism is %.2f ",n)
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