Q.4 (a) An initial stress element is shown in Figure Q.4a below. The magnitudes and directions of the stresses are also

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Q 4 A An Initial Stress Element Is Shown In Figure Q 4a Below The Magnitudes And Directions Of The Stresses Are Also 1 (105.53 KiB) Viewed 58 times

Q.4 (a) An initial stress element is shown in Figure Q.4a below. The magnitudes and directions of the stresses are also indicated in the same figure. (i) Draw the Mohr's Circle and label the critical points in the circle. (5 marks) (ii) Draw and label the complete principal stress element. (5 marks) (iii) Draw and label the complete shear stress element. (5 marks) 60 MPa î 30 MPa 30 MPa 60 MPa + 60 MPa 30 MPa 30 MPa 60 MPa Figure 0.4a (b) The beam ABCDEFG shown in Figure Q.4b below has a pinned support at A, two roller supports at B and F respectively, and an internal hinge at D. Draw the free-body diagrams ABCD and DEFG. (4 marks) (ii) Determine the support reactions at A, B and F. (6 marks) 20 kN/m 10 KN 10 kN/m 20 kN 1 V B с E 00 5 m 1 m 1 m 1 m 1 m 5 m Figure 0.4b