Design bending beam (Problem 6 - 10)

• Đăng bởi: lethithanhbinh
• Sinh viên
• 18/12/2017

Design bending beam 6:

Knowing that W = 12 kN, draw the shear and bending-moment diagrams for beam AB and determine the maximum normal stress due to bending. (Picture 12)

Design bending beam 7:

Determine (a) the magnitude of the counterweight W for which the maximum absolute value of the bending moment in the beam is as small as possible, (b) the corresponding maximum normal stress due to bending. (Hint: Draw the bending-moment diagram and equate the absolute values of the largest positive and negative bending moments obtained.) (Picture 13)

Design bending beam 8:

Determine (a) the distance a for which the absolute value of the bending moment in the beam is as small as possible, (b) the corresponding maximum normal stress due to bending.(Hint: Draw the bending-moment diagram and equate the absolute values of the largest positive and negative bending moments obtained.) (Picture 14)

Design bending beam 9:

Knowing that P = Q = 480 N, determine (a) the distance a for which the absolute value of the bending moment in the beam is as small as possible, (b) the corresponding maximum normal stress due to bending.(Hint: Draw the bending-moment diagram and equate the absolute values of the largest positive and negative bending moments obtained.) (Picture 15)

Design bending beam 10:

A solid steel bar has a square cross section of side b and is supported as shown. Knowing that for steel r = 7860 kg/m, determine the dimension b for which the maximum normal stress due to bending is (a)10 MPa, (b)50 MPa. (Picture 16)