Carlos N. Zenatti, Guilherme S. Silveira, Gustavo M. S. Gidrão, Paulo Rogério Novak, Rúbia Mara Bosse, Laura Silvestro, Lara K. Marcos
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Analytical Evaluation of Natural Frequencies in Hollow-Core Slabs: A Practical Methodology for Civil Engineering Applications
This study presents an analytical methodology for predicting the natural frequencies of hollow-core slab panels, addressing a significant research and application need in structural engineering. The study suggests a numerical–experimental calibration utilizing the Finite Element Method (FEM) via ANSYS software to assess the modal response of hollow-core slabs validated according to literature study. Through the development of Irvine’s equation, this research proposes a simplified methodology for determining the natural frequency of slabs. The slabs were modeled as simply supported beams, and Irvine’s equations have been applied to simplify several degrees of freedom structure (SDOF) and determine the natural frequencies for various spans. The validation of the numerical–experimental model indicates a maximum error of 8.32% in the third vibration mode, demonstrating the accuracy and practicality of the proposed analytical method. This approach could be useful in determining the vibration serviceability presented in Brazilian Standard Procedure for the Design of Concrete Structures. It can help engineers and manufacturers to estimate structural compliance and vibration serviceability.
期刊介绍:
The aim of the Iranian Journal of Science and Technology is to foster the growth of scientific research among Iranian engineers and scientists and to provide a medium by means of which the fruits of these researches may be brought to the attention of the world’s civil Engineering communities. This transaction focuses on all aspects of Civil Engineering
and will accept the original research contributions (previously unpublished) from all areas of established engineering disciplines. The papers may be theoretical, experimental or both. The journal publishes original papers within the broad field of civil engineering which include, but are not limited to, the following:
-Structural engineering-
Earthquake engineering-
Concrete engineering-
Construction management-
Steel structures-
Engineering mechanics-
Water resources engineering-
Hydraulic engineering-
Hydraulic structures-
Environmental engineering-
Soil mechanics-
Foundation engineering-
Geotechnical engineering-
Transportation engineering-
Surveying and geomatics.