Flexibility method

The force method is a general computational methods of structural analysis for the calculation of statically indeterminate systems. It is rarely used in practice, but still taught because of its intuitiveness.

A ( externally ) statically indeterminate system has at least one support reaction ( reaction forces and internal forces ) more than equilibrium conditions (sum vertical forces sum horizontal forces, the sum of the moments about any pole), that is, the degree of freedom of the system is less than or equal -1. Therefore, the equilibrium conditions are not sufficient to calculate the support reactions. The additional conditions are derived from the deformation.

Procedure: (to determine a solution or to check the plausibility of existing solutions satisfy a matrix USEFULLY calculator and writing material for manageable systems often leads to " hand Statements" )

• Structural Analysis