Civil Engineering MCQAE Level Civil Engineering
In the unit load method (virtual work) for determining deflection in a truss, the formula is δ = Σ(f × F × L / AE), where f represents:
Structural AnalysisVirtual Work TrussMEDIUM
Choose the correct answer
A
The actual member force
B
The member force due to unit virtual load at the point of required deflection
C
The member area
D
The axial stiffness
Correct Answer
B. The member force due to unit virtual load at the point of required deflection
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f = member forces in the truss due to a unit virtual load applied at the point and direction of required deflection. F = real member forces, L = length, AE = axial rigidity.
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