2. Th e principal stresses at a point on the surface of a shaft subject to...
A point on the surface of a 5 cm diameter round bar has a bending moment of 180 N-m in tension. It also has Torque of 140 N-m producing a positve shear stress. a) What are the principal stresses and the maximum shear stress? Draw Mohr's circle. Show the stresses on an element and indicate the angles of rotation? b) Dimension and select an appropriate material for a key on this shaft
2. At a point in a rock layer underground, the vertical and horizontal principal stresses are 120 kN/m2 and 46 kN/m2 (both in compression), respectively. a) Label the element with the principal stresses b) Draw the Mohr's circle for these conditions. Label the axes. c) On the Mohr's circle, label the major and minor principal stresses, the deviator stress, and the center of the circle. Show all applicable coordinates or values d) What is the maximum shear stress and the...
3- The shaft shown in the figure rotates with constant angular velocity and is transmitting a torque from gear B to gear C through the forces Exo and Ez as shown. The shaft is subject to combined bending and torsion due to the forces shown. The weights of the shaft and pulleys may be neglected and the supports can exert only concentrated force reactions. The radius of the gear at B is 50 mm and that at C is 75...
M15.3 Principal stresses in a rectangular tube scenes The rectangular tube is subjected to a transverse shear force of V = 230 kN and a bending moment of M = 530 kN-m, each acting in the directions shown. Determine the bending stress, the transverse shear stress magnitude, the principal stresses, and the maximum shear stress magnitude acting at location H. У Он (MPa) H 550 mm TH (MPa) 65 mm Op1 (MPa) X Op2 (MPa) 12 mm ITmax (MPa) wall...
True of False 1.If a material point has three principal stresses ?1 = ?2 = ?3 = 300????, then the maximum shear stress is ???? = 150????. 2.The endurance limit of a material is independent on the size of a part. 3.The tensile stress in a bolt is usually calculated through tensile force divided by area of unthreaded rod’s cross-section area. 4.Edge shear-out or tear-out is one failure mode in bolted or riveted joints. 5.Pretension of bolts can be controlled...
A beam may have zero shear stress at a section but may not have zero deflection; Hence, bending is primarily caused by bending moment In Torsion loading a stress element in a circular rod is subject to shear state The principal plane and the plane on which the shear stresses are maximum, they make 90 degree angle between them. If the Torque on a steel circular shaft (G=80 GPa) is 13.3 kN-m and the allowable shear stress is 98 MPa,...
A shaft with a diameter of 43 mm, is shown below On the right
hand side at location D a wheel has a force F of 4824N applied. The
diameter of this wheel is 150 mm. The torque produced by F is
transmitted through the entire shaft to location A where the torque
is reacted. There are no other constraints at location A. Bearings,
are located at B and C, and provide radial constraint. The bearing
at B also provides...
A shaft subjected to bending moment varying from -200 N m to +500 N m and a varying torque from 50 N m to 175 N m. If material of the shaft is 30C8, stress concentration factor is 1.85, notch sensitivity is 0.95 reliability 99.9% and factor of safety is 1.5, find the diameter of the shaft. The load on a bolt consists of an axial pull of 10 kN together with a transverse shear force of 5 kN. Find...
Problem 1: A shaft, with a diameter of 43 mm, is shown below. On the right-hand side at location D a wheel has a force F of 4824N applied. The diameter of this wheel is 150 mm. The torque produced by F is transmitted through the entire shaft to location A where the torque is reacted. There are no other constraints at location A. Bearings, are located at B and C, and provide radial constraint. The bearing at B also...
3. The propeller shaft of the tugboat is subjected to the compressive force and torque shown. The shaft has an inner diameter of 125 mm and an outer diameter of 175 mm. (20 pts) 0410 KN 2 kNm Determine the following at point A located on the outer surface: avg. TMIP, 8s Principal stresses and Op c Draw Mohr's circle d Draw principal stress and maximum in plane shear stress elements