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## beamft

       Structure: cantilever beam.
       Test objective: eigenfrequencies and eigenmodes calculated in a
                       perturbation step following a static step with
                       temperature loading only. Due to the zero
                       expansion coefficient the loading creates
                       displacements nor stresses, and the change of
                       frequencies compared to a nonperturbative step
                       is only due to the lower Young's modulus at high
                       temperature.