2. Benchmark solution

2.1. Calculation method used for the reference solution

The reference solution is the one given in sheet SSLL11 /89 of guide VPCS.

It is obtained by the method of movements in [bib1].

2.2. Benchmark results

Moves of points \(C\) and \(D\).

2.3. Uncertainty about the solution

Analytical solution.

2.4. Bibliographical references

1. RAO (J.S.): The finite element method in engineering, problem 5.1, p. 275.