Vibrational analysis of a two-level civil structure under pulse excitations in the metropolitan area of Bucaramanga
DOI:
https://doi.org/10.15332/iteckne.v20i2.3213Keywords:
Vibrational analysis, Structural dynamics, Finite elements, External excitations, Mechanical vibrations, Natural frequency, Simple harmonic motionAbstract
Vibrational analysis in civil engineering is essential for understanding the behavior of structures. Vibrations can be caused by multiple external agents and can be studied in different contexts such as vibrations induced by live loads (people on pedestrian bridges, floors with pedestrian traffic, areas where sports activities take place, etc.), vibrations induced by machinery (in buildings, towers, suspension and cable-stayed bridges, etc.), and vibrations induced by traffic and construction activity (on roads, railways, construction sites, etc.) [1]. The aim is to study the vibrational dynamics of a two-degree-of-freedom structural system under the action of external forces varying in time, step, and pulse, determining the structure's response (displacement, velocity, and acceleration) due to an external action. The dynamic system of coupled differential equations will be numerically solved using Mathematica software for subsequent analysis of the structure's dynamic response, contrasting it with simulations conducted in the finite element software ETABS for complementary analysis and proper structural sizing. Consequently, dynamic analysis of civil structures becomes a crucial element in design and construction, providing guidance on validating a mathematical model and additionally suggesting the types of repetitive tests over time that may indicate potential damage during the structures' service life.
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