Internal leakage in
Classified in Design and Engineering
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a structure is called statically indetermined if there is at least one load for which the external and internal reactions can be comptuted from the psequilibrium equation but not uniquely.
PS. A satically determined structure obtained from the original one by removing. N constraints and introducing the corresponding force/moments as redundants (Xi, i=1,2,...N)
Flexibility coeff. Aij is the displacement in the line of Xi due to Xgorritoj=1
Stiffness coefficients aij unbalanced force/moment at the ith artificial constraint due to a unit displacement applied at the jth artificial constraint
Load constants ai0 unbalanced force/moment at the ith artificial constraint due to the action of the given loads a0