Benchmark solution
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Calculation method used for the reference solution
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*Modeling A*:

Guide VPCS (not published): comparison with codes STRUDL, POUX,, SYSTUS, CASTOR, SAP IV [:ref:`1 <1>`].

For the comparison of method CQC, comparison with Castem2000.

*B modeling and C modeling*: non-regression


Benchmark results
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6 first natural frequencies and participation factors.

Displacements of points :math:`B` and :math:`C`, nodal reaction at point :math:`A` (response on 3 modes for combinations DPC and SRSS, response on 6 modes for combinations DPC, CQC and DSC).


Bibliographical references
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1. J. PIRANDA, Laboratory of Applied Mechanics - University of Franche Comté Besançon (France). Sheet SFM — Validation of Structural Calculation Software Packages — Dynamic Analysis Group, June 1991. Guide VPCS 1991 not published.