Force-Deformation Relationship  
scene 6 of 10

The figure shows the free body diagram around the flange. The flange connects the post with the rod. The free body diagram cuts across the post labeled 1 and the rod labeled 2. The force on the post is F subscript 1 directed horizontally to the left and the force on the rod is F subscript 2 directed horizontally to the right.

Step 3. Force-deformation relationships

Drag the proper force-deformation equation here.

Drag another proper force-deformation equation here.

Next

Drag the proper force-deformation equation here.

Drag another proper force-deformation equation here.

This is a compatibility equation, which is expressed in terms of the unknown internal member forces.
This geometry of deformation equation expresses a relationship between the deformations in members (1) and (2).
Correct. This equation states the relationship between the internal force in an axial member and its deformation.
This geometry of deformation equation expresses a relationship between the deformations in members (1) and (2).
Correct. This equation states the relationship between the internal force in an axial member and its deformation.