Question

For a statically indeterminate structure, that is indeterminate to the nth degree, write down the set of compatibility equations, then put those equations in matrix form. Denote the set of redundants by {x1, x2, …, xn}, the general flexibility coefficient by fij where 1<i, j<n, and the deformations due to external actions corresponding to the redundants by ∆1',∆2',…,∆n'.

Answer 1

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|Likewise all the the compatibility eqn can be written.......

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Now the above equations can be writtten in to matrix form as shown below

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