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What are the independent displacement components at every joint in a rigid-jointed planar frame?

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Subject
Structural Analysiscivil-engineering-mcqs › structural-analysis
Published
19 Jan 2019
Last updated
28 May 2026

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Explanation

In a rigid-jointed plane frame, each joint can move independently in two directions along the plane (two translations) and can also rotate about an axis perpendicular to the plane, resulting in two linear displacements and one rotational displacement.

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Practice related questions from the same subject.

  1. 1.Consider the following statements regarding the applicability of displacement and force methods in structural analysis. Which pair of statements is accurate?
  2. 2.For a stable structure, which statements correctly describe the characteristics of the diagonal elements in the flexibility and stiffness matrices?
  3. 3.How is the j-th column of the flexibility matrix obtained?
  4. 4.According to the slope deflection method, which of the following forces are responsible for causing deformations?
  5. 5.How many independent equations must be fulfilled to achieve static equilibrium in a planar structure?
  6. 6.For a pin-jointed planar frame with m unknown member forces, r unknown reaction components, and j joints, how is the degree of static indeterminacy calculated?
  7. 7.What is the degree of static indeterminacy for a rigidly connected planar frame consisting of 15 members, 14 joints, and 3 reaction forces?
  8. 8.Under which condition is a pin-jointed planar frame considered unstable?
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