![]() ![]() (a) Determine the degree of static indeterminacy, n of the structure. The basic steps in the force method are as follows: The method is based on transforming a given structure into a statically determinate primary system and calculating the magnitude of statically redundant forces required to restore the geometric boundary conditions of the original structure. The force method is used to calculate the response of statically indeterminate structures to loads and/or imposed deformations. Another name for the method is the force method because forces are the unknown quantities in equations of compatibility. It is called the flexibility method because flexibilities appear in the equations of compatibility. There will always be as many compatibility equations as redundant. The flexibility method is based upon the solution of "equilibrium equations and compatibility equations". ![]() Compatibility and material information are essential. However, for indeterminate structures, Statics (equilibrium) alone is not sufficient to conduct structural analysis.Material (stress-strain) relationships are needed only to calculate deflections. based on Statics) irrespective of the material information. For determinate structures, the force method allows us to find internal forces (using equilibrium i.e.Force Method of Structural Analysis Introduction ![]()
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