Finite Element Analysis of Natural Vibration Frequency for Unbounded Prestressed Concrete Beams

Abstract:

An experimental investigation on the dynamic characteristics of unbounded prestressed concrete simply support beams is presented. A total of 5 unbounded prestressed concrete simply support beams were constructed and tested. The influence of prestressing on natural vibration frequency of concrete beams is studied by applying prestress gradually. A model of variable stiffness is proposed to calculate the natural vibration frequency of unbounded prestressed concrete beams. The finite element program Sap2000 is used to calculate the frequency of unbounded prestressed concrete beams. The results show that the calculating results agree well with experimental ones.

• Periodical: Applied Mechanics and Materials (Volumes 351-352)
• Pages: 1034-1037
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.351-352.1034
• Online since: August 2013
• Authors: Feng Ge Li, Yan Zhao
• Keywords: Finite Element Analysis (FEA), Frequency, Unbounded Prestressed Concrete Beams, Variable Stiffness

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