In the force method (flexibility method) of structural analysis, compatibility conditions ensure:
Choose the correct answer
Equilibrium at all joints is satisfied
The displaced configuration of the released structure matches the actual structure at the redundant locations
Maximum load-carrying capacity
Minimum strain energy
Correct Answer
B. The displaced configuration of the released structure matches the actual structure at the redundant locations
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The redundant forces are found by satisfying compatibility: the net displacement at each removed redundant (due to applied loads plus redundant forces) must equal the actual boundary condition (e.g., zero for a support).
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