Nonlinear Dynamic Analysis of a Reinforced Concrete Frame by the Boundary Element Method

• Published in: Materials science forum Vol. 968; pp. 383 - 395
• Main Authors: Bekirova, Mariiam, Surianinov, Mykola, Fomina, Inna, Fomin, Volodymyr
• Format: Journal Article
• Language: English
• Published: Pfaffikon Trans Tech Publications Ltd 23.08.2019
• Subjects: Beams (structural); Boundary element method; Columns (structural); Concrete construction; Dynamical systems; Finite element method; Frame structures; Material properties; Mathematical analysis; Nonlinear analysis; Nonlinear dynamics; Nonlinear programming; Plastic properties; Reinforced concrete; Step-by-Step Method; Nonlinear Vibrations; Method of Boundary Elements; Dynamics of Frame Buildings; Non-Linear and Plastic Properties of Concrete
• ISSN: 0255-5476; 1662-9752; 1662-9752
• DOI: 10.4028/www.scientific.net/MSF.968.383

Direct dynamic analysis of reinforced concrete frame buildings taking into account the nonlinear and plastic properties of materials by the finite element method is connected with the solution of a system of solving equations of very high order. This is due to the fact that it is necessary to split the beams and columns that form the structure into a large number of finite elements, since the deformation properties of concrete are different in the compressed and stretched zones, as well as in the loading and unloading zones. In this paper, we propose a method for investigating nonlinear spatial oscillations of a flat reinforced concrete frame, based on the method of boundary elements, which leads to a much smaller amount of computational work.