Stability of an axially accelerating viscoelastic beam constituted by the standard linear solid model is investigated.
For a beam constituted by the Kelvin model, the primary resonance is analyzed via the Galerkin method under the simply supported boundary conditions.
Beam elements (BAR, ROD and BEAM) constitute the connections of the wings to the main structure and of the instrumentation to the floors.
Zero or small errors for the horizontal modes imply that distributing the lumped-mass mesh over beams constitutes no differences, but for the case of vertical excitation the results show a lot of discrepancies.
The cantilevers are uniform viscoelastic beams constituted by the Kelvin model.
The cross-sectional dimensions of the columns and beams constitute the sizing design variables, while the number and size of the web openings of the beams constitute the topology and shape design variables, respectively.
The non-linear computations include a buckling analysis of the slender steel beams constituting the roof, and an "integral" seismic pushover analysis of the monumental columns.
Composite beams constituted by a concrete-encased steel truss welded to a continuous steel plate are analyzed using a nonlinear finite element formulation based on Newmark's classical model.
The buildings have a framed structure with one-way slabs; the wide beams constitute the distinctive characteristic, their depth being equal to that of the rest of the slab, thus providing a flat lower surface, convenient for construction and the layout of facilities.
The observation that nighttime walking speed shows no evidence of latitudinal variation supports the idea that sleep (i.e. the bouts of inactivity), rather than walking speed (i.e. the absolute number of infrared beam crosses), constitutes the key behavioral difference in nighttime activity levels in higher vs. lower latitude populations.
