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Question 3: A simply supported beam supports a triangularly distributed load and a couple [20 marks] acting at the left support as shown. The beam has the cross-section given and is made of steel with a yield strength of 350 MPa and shear stress at yield of 75 MPa. The elastic modulus of the steel is 200 GPa. Determine the following: (a) maximum normal stress in the beam (b) maximum shear stress in the beam (c) shear stress at the tip of the flange (point E) at a section located 2 m from the left support. To receive marks you must give reasons to justify your answer. 120 kN-m 6 m 30 kN/m 100 15 T 300 -20 E T 15 beam cross-section (all dimensions in mm)

          Question 3: A simply supported beam supports a triangularly distributed load and a couple
[20 marks] acting at the left support as shown. The beam has the cross-section given and is
made of steel with a yield strength of 350 MPa and shear stress at yield of 75 MPa.
The elastic modulus of the steel is 200 GPa.
Determine the following:
(a) maximum normal stress in the beam
(b) maximum shear stress in the beam
(c) shear stress at the tip of the flange (point E) at a section located 2 m from the
left support. To receive marks you must give reasons to justify your answer.
120 kN-m
6 m
30 kN/m
100
15
T
300
-20
E
T
15
beam cross-section
(all dimensions in mm)

Question 3: A simply supported beam supports a triangularly distributed load and a couple
[20 marks] acting at the left support as shown. The beam has the cross-section given and is
made of steel with a yield strength of 350 MPa and shear stress at yield of 75 MPa.
The elastic modulus of the steel is 200 GPa.
Determine the following:
(a) maximum normal stress in the beam
(b) maximum shear stress in the beam
(c) shear stress at the tip of the flange (point E) at a section located 2 m from the
left support. To receive marks you must give reasons to justify your answer.
120 kN-m
6 m
30 kN/m
100
15
T
300
-20
E
T
15
beam cross-section
(all dimensions in mm)

Added by Eva S.

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