Current Problems

Need to focus on Flexibility Method for indeterminate structures.

Quick review:

• Sufficient redundants are removed from an indeterminate structure to produce a stable, determinate released structure.
• The design loads and the redundants are then applied to the released structure.
• Then analyze the determinate released structure for the applied loads and redundants
• The structure is assumed to behave elastically, so these individual analyses can be combined (superimposed) to produce an analysis that includes the effect of all forces and redundants.
• To solve for redundants, the deflections are summed at each point and set equal to the known value of deflection.
• This produces a set of compatibility equations equal in number to the redundants.

In my case, choose two redundants = 2 compatibility equations.

2 redundants: Mtop & By (top)

structure = (P -> | )+ ( | 1 mom)*Mtop + ( | 1k force down)* Ry