Benchmark solution
=====================


Calculation method used for the reference solution
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The reference solution is the one given in sheet SDLX01 /89 of the guide VPCS, which presents the calculation method as follows:

Dynamic stiffness method (Theory of slender beams)


Benchmark results
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13 first natural frequencies.


Uncertainty about the solution
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:math:`(\Delta f/f)<0.5\text{ \% }`.


Bibliographical references
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* J. PIRANDA. Structural vibration courses and tutorials. Mechanical option. National School of Mechanics and Micromechanics. Applied Mechanics Laboratory. Besancon (France) (1983).