Question

In a real beam , at an end, the boundary condition of zero slope and zero vertical displacement exists. In the corresponding conjugate beam, the boundary conditions at this end will be:

• A. Shear forces=0 and bending moment =0
• B. Slope =0 and vertical displacement =0
• C. Slope =0 and bending moment =0
• D. Shear force =0 and vertical displacement =0

Answer 1

The correct option is A Shear forces=0 and bending moment =0

Consider support at A:
Zero slope and zero displacement occurs when there is fixed support as shown above.The corresponding conjugate beam will have zero shear force & zero bending moment.