diff options
Diffstat (limited to '3482/CH8/EX8.5')
| -rw-r--r-- | 3482/CH8/EX8.5/Ex8_5.sce | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/3482/CH8/EX8.5/Ex8_5.sce b/3482/CH8/EX8.5/Ex8_5.sce new file mode 100644 index 000000000..7fec8ecb3 --- /dev/null +++ b/3482/CH8/EX8.5/Ex8_5.sce @@ -0,0 +1,21 @@ +clc; + +//page 412 +pitch=2;//mm, pitch of screw +d=10;//mm, mean diameter of thread +r=d/2;//mm, radius +us=0.30;// Coeffiecient of static friction +M=40;//kN.m , Maximum couple + +//Force exerted by clamp +L=2*pitch;//mm, as screw is double threaded +theta=atan(L/(2*%pi*r));//rad, angle of inclination +phi=atan(us);//rad, angle of friction +Q=M/r*1000;//N, Force applied to block representing screw +Q=Q/1000//kN, Conversion into kN +W=Q/tan(theta+phi);//kN, Magnitude of force exerted on the piece of wood +printf("Magnitude of force exerted on the piece of wood is W= %.2f kN \n",W); +//Couple required to loosen clamp +Q=W*tan(phi-theta);//kN, Force required to loosen clamp +Couple=Q*r;//N.m, Couple required to loosen clamp +printf("Couple required to loosen clamp is %.2f N.m\n",Couple); |