Jul 2026· Building and reconstruction· 0 citations· 9 references
Abstract
In modern design practice, a numerical method for verifying the robustness of damaged structural systems based on imitation modeling is becoming increasingly common. This method utilizes the fundamental principles of macromodeling, according to which the elastic behavior of a structural system is determined by the operation of linearly elastic rods and plates, while nonlinear behavior is completely determined by the behavior of point and/or linear plastic hinges. Thus, an adequate description of the diagrams for plastic hinges is an important element of modeling. This article presents proposals for describing the parametric points of plastic hinges for bending, shear, and axial tension, which allows for describing the operation of a damaged structural system at all stages of its operation. It is proposed to limit the maximum rotation angles during bending, taking into account the shear failure criterion. The calculation results obtained using an imitation finite element model are compared with experimental data.
Objective
. This work is devoted to a quantitative assessment of the effect of internal prestressing of reinforcement on the stress-strain state and load-bearing capacity of a thick-walled cylindrical shell.
Method
. The study is carried out through a computational experiment using the finite element method in an...
V. V. Kuznetsov, S. V. Litvinov, T. Volosatova· Herald of Dagestan State Tec...· 0 citations
This study focuses on the capacity design of earthquake-resistant steel structures incorporating knee bracing systems, which serve as dissipative elements. It also presents the development and validation of a numerical model for simulating the behavior of these systems. The proposed model accurately captures the resp...
R. Piazzon, F. Gusella, P. Zampieri· Bulletin of Earthquake Engin...· 0 citations
Based on first-order shear deformation theory and the Rayleigh-Ritz method, this paper establishes the dynamic model for a cylindrical shell with various boundary conditions (fixed, simply supported, free or elastically supported etc.) by means of Chebyshev polynomials and the artificial boundary spring method. To vali...
Haotian Song, Shu-Feng Lu· Sound & Vibration· 0 citations
Introduction
. The article analyses the stress-strain states of reinforced concrete elements when calculating the strength of normal sections using a nonlinear deformation model NDM, proposes a method for describing axial deformations and forced in the form of function parameters, introduces criteria for grouping d...
D. Rusanov, S. Serbin· Concrete and Reinforced Conc...· 0 citations
The article presents a mathematical model for the loss of stability in a continuous welded rail system, based on the analysis of the deformed shape of an equivalent beam that simulates the rail-sleeper grid. The deformed area of an equivalent infinitely long beam divided into a buckling region characterized by transver...
P. Smirnov· Bulletin of Siberian State U...· 0 citations
The paper investigates the nonlinear torsional dynamics of drill strings using mathematical and computational modeling. The study is motivated by the need to improve the reliability and efficiency of drilling processes under conditions when torsional vibrations affect the performance and the safety of drilling systems....
L. Khajiyeva, M. M. Jantassova, A. Kudaibergenov· WSEAS Transactions on Applie...· 0 citations
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