12.3 ANALYSIS OF PERFECT FRAMES
Following are the assumptions made in finding the forces in the members of a frame.
- The frame is a perfect frame
- The frame is loaded only at the joints
- All the members of the frame are pin-jointed
- Self-weight of the members is neglected.
Forces in various members of a perfect frame may be found out either by analytical method or graphical method. Here, the discussion is confined to only analytical method.
A perfect frame can be analytically analyzed by the following methods:
- Method of joints or method of resolution
- Method of sections or method of moments
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