3). The compression chamber BC of the truss ABC in Fig. 2 is a square solid...
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3). The compression chamber BC of the truss ABC in Fig. 2 is a square solid steel bar with 45 mm x 45 mm cross section. The tension member AB is a solid steel rod that has a circular cross section with diameter d. Let Est = 200 GPa and Gyp = 250 MPa. Assuming BC is an Euler Column, (a) draw a free- boy diagram of the truss in Fig. 1. (b) Determine the maximum load W that can be supported at B without causing elastic buckling of the member BC. (c) Determine the diameter of member AB if it is to yield in tension just when the load W reaches the determined value in part (b). The yield stress in tension is typ= 250 MPa. You may ignore the mass of the column, and that of the rod. (Hint: AB is not an Euler Column). B O 20 2.5m Figure 2 (0) 1.8m 3). The compression chamber BC of the truss ABC in Fig. 2 is a square solid steel bar with 45 mm x 45 mm cross section. The tension member AB is a solid steel rod that has a circular cross section with diameter d. Let Est = 200 GPa and Gyp = 250 MPa. Assuming BC is an Euler Column, (a) draw a free- boy diagram of the truss in Fig. 1. (b) Determine the maximum load W that can be supported at B without causing elastic buckling of the member BC. (c) Determine the diameter of member AB if it is to yield in tension just when the load W reaches the determined value in part (b). The yield stress in tension is typ= 250 MPa. You may ignore the mass of the column, and that of the rod. (Hint: AB is not an Euler Column). B O 20 2.5m Figure 2 (0) 1.8m
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