Question 3

Question 3

Virtual Work question 3

Determine the vertical displacement of point B (Δ_B ↓). Neglect the strain energy due to shear.

Determine the vertical displacement of point B (Δ_B ↓). Neglect the strain energy due to shear.

Click below to show answer. X

Step 1:
Calculate internal bending moment due to real external load

Step 1:
Calculate internal bending moment due to real external load

Virtual Work solution step 1

Step 2:
Calculate internal bending moment due to virtual load

Step 2:
Calculate internal bending moment due to virtual load

Virtual Work solution step 2

Step 3:
U_e = U_i to calculate Δ_B (↓)

Step 3:
U_e = U_i to calculate Δ_B (↓)

Virtual Work solution step 3

Useful formula:

Useful formula:

Virtual Work formula

Congratulations! You've completed all the questions in this topic. Let's look at C6.4: Castigliano's Theorem now.