Engineering Answers

Determine the crippling load for a T-section of dimensions 10 cm. x 10 cm x 2 cm and of length 5 m when it is used as strut with both of its ends hinged. Take Young's modulus, E2.0x10^5 N/mm^2

A welded joint, as shown in Fig. is subjected to an eccentric load of 2500 N.

Find the size of the weld, if the maximum shear stress in the weld is not to exceed

50 N/mm 2

A double riveted double cover butt joint in plates 20 mm thick is made with 25 mm diameter rivets at 100 mm pitch. The permissible stresses are:

= 120MPa T = 100MPa 0 150MPa Find the efficiency of joint, taking the strength of the rivet in double shear as twice than that of single shear.

A double riveted lap joint is made between 15mm thick plates. The rivet diameter and pitch are 25 mm and 75 mm, respectively. If the ultimate stresses are 400 MPa in tension, 320 MPa in shear and 640 MPa in crushing, find the minimum force per pitch which will rupture the joint. If the above joint is subjected to a load such that the factor of safety is 4, find out the actual stresses developed in the plates and rivets.

A plate 60 mm wide and 12.5 mm thick is to be welded to another plate by means of parallel fillet welds. The plates are subjected to a load of 80 kN. Find the length of the weld. Assume allowable shear strength to be 60 MPa.

A plate 60 mm wide and 12.5 mm thick is to be welded to another plate by means of parallel fillet welds. The plates are subjected to a load of 80 kN. Find the length of the weld. Assume allowable shear strength to be 60 MPa.

A double riveted lap joint is made between 15mm thick plates. The rivet diameter and pitch are 25 mm and 75 mm, respectively. If the ultimate stresses are 400 MPa in tension, 320 MPa in shear and 640 MPa in crushing, find the minimum force per pitch which will rupture the joint. If the above joint is subjected to a load such that the factor of safety is 4, find out the actual stresses developed in the plates and rivets.

10.Determine the maximum mean diameter of a taper in for use to fix a lever to a

shaft. If it transmit a maximum torque of 750 in-lb. The shaft diameter is 3in.

5. An 18mm diameter rivet is used to fasten two 22mm thick plate. If the

shearing stress is 60 MPA. What tensile force applied each plate to shear the

bolt?

( Ans F=15.27KN )

3. A 4.3in diameter by 3in long journal bearing is to carry a 6600lb load at 4600

r[, isomg SAE 40 lube oil at 200 through a single hole at 25 psi. Compute

the bearing pressure. Bearing pressure is the same as bearing stress.

( Ans Sb=511.63psi )