Module 4 : Deflection of Structures
Lecture 3 : Principle of Virtual Work
 
  
  Rotation of C : Apply a unit couple at C as shown in Figure 4.23(f) and plot the bending moment diagram as shown in Figure 4.23(g). The slope at C is given by multiplying the diagrams of Figure 4.22 (c) and (g) as follows
 
  
 
 
 
 
(anti-clockwise direction)