Dynamic method for determining critical loads in the PRINS computer program

Агапов, В. П.; Павлович, Агапов Владимир; Markovich, A S; Семенович, Маркович Алексей

doi:10.22363/1815-5235-2020-16-5-380-389

Cited by 3 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…На основании приведенного алгоритма разработана программа, адаптированная к вычислительному комплексу ПРИНС [18][19][20].…”

Section: деформирование бетона в областях «сжатие -сжатие -растяжение...unclassified

Finite Element for the Analysis of Massive Reinforced Concrete Structures with Cracking

Agapov,

Markovich

2023

Struct. Mech. of Eng. Const. and Build

Self Cite

View full text Add to dashboard Cite

The solid finite element has been developed for the calculation of massive reinforced concrete structures with cracks. When constructing a finite element in the compression-compression-compression mode, the Willam Warnke failure criterion was used. The tensile behavior of concrete was assumed to be linear before the crack initiation. Modern building codes require non-linear calculations of concrete and reinforced concrete structures, taking into account the real properties of concrete and reinforcement. In this regard, a technique has been developed and a solid finite element has been built, adapted to the PRINS software, which makes it possible to perform calculations of massive reinforced concrete structures, taking into account their actual work. Development of a method for calculating reinforced concrete structures under conditions of a three-dimensional stress state, taking into account the brittle fracture of compressed concrete and cracking in tensile concrete. Based on this technique, the implementation of a solid finite element in the PRINS software. To verify the developed finite element, a series of test calculations of a beam under three-point bending conditions was carried out. Comparison of the calculation results with the data of experiments by the authors confirmed the high accuracy and reliability of the results obtained. The developed solid finite element included in the PRINS software can be effectively used by engineers of design and scientific organizations to solve a wide class of engineering problems related to the calculations of massive reinforced concrete structures.

show abstract

Section: деформирование бетона в областях «сжатие -сжатие -растяжение...unclassified

Finite Element for the Analysis of Massive Reinforced Concrete Structures with Cracking

Agapov,

Markovich

2023

Struct. Mech. of Eng. Const. and Build

Self Cite

View full text Add to dashboard Cite

show abstract

Нелинейный Анализ Массивных Железобетонных Конструкций С Учетом Трещинообразования

Agapov,

Markovich

2023

IJCCSE

View full text Add to dashboard Cite

A finite element method, as well as the algorithm and the program for solid reinforced concrete structures analysis have been developed, taking into account plastic deformations of concrete. A modified Willam & Warnke failure criterion was used, supplemented by a flow criterion. Two models of volumetric deformation of concrete have been developed: an elastic model under brittle fracture and an ideal elastic-plastic model. An eight-node solid finite element with linear approximation of displacement functions, which implements the deformation models above mentioned, is constructed. This finite element is adapted to the PRINS computational software, and as part of this program it can be used for physically nonlinear analysis of building structures containing three-dimensional reinforced concrete elements. Modern building codes prescribe to carry out calculations of concrete and reinforced concrete structures in a nonlinear formulation, taking into account the real properties of concrete and reinforcement. To verify the developed finite element, a series of test calculations of a beam in the condition of pure bending was carried out. Comparison of the calculation results with experimental data confirmed the high accuracy and reliability of the results obtained.

show abstract

Models of nonlinear deformation of concrete in a triaxial stress state and their implementation in the PRINS computational complex

Agapov,

Markovich,

Aidemirov

2023

Struct. Mech. of Eng. Const. and Build

Self Cite

View full text Add to dashboard Cite

Modern construction standards and regulations prescribe to carry out calculations of concrete and reinforced concrete structures in a nonlinear formulation with account of the real properties of concrete and reinforcement. However, the most of finite-element program complexes cannot perform such calculations in a nonlinear formulation with account of plastic deformations of concrete and reinforcement. To solve this problem, a methodology has been developed and a solid finite element adapted to the PRINS computing complex has been created, which made it possible to perform calculations of reinforced concrete structures considering their actual work. The aim of the study - development and implementation of a method for calculating reinforced concrete structures under conditions of a three-dimensional stress state, considering both brittle fracture and elastic-plastic deformation of concrete. A finite-element methodology, algorithm, and program for calculation of massive reinforced concrete structures with account of plastic deformations of concrete have been presented. The methodology is based on the modified Willam and Warnke strength criterion supplemented with the flow criterion. Two models of volumetric deformation of concrete have been regarded: the elastic model at brittle failure and the ideal elastoplastic model. An eight-node finite element with linear approximating functions of displacements implementing the mentioned deformation models is created. Verification calculations of a massive concrete structure in three-axial compression testify to the accuracy and convergence of the developed finite elements. The PRINS can be effectively used by engineers of designing and scientific organizations to solve a wide class of engineering problems related to calculations of building structures.

show abstract

Dynamic method for determining critical loads in the PRINS computer program

Cited by 3 publications

References 6 publications

Finite Element for the Analysis of Massive Reinforced Concrete Structures with Cracking

Finite Element for the Analysis of Massive Reinforced Concrete Structures with Cracking

Нелинейный Анализ Массивных Железобетонных Конструкций С Учетом Трещинообразования

Models of nonlinear deformation of concrete in a triaxial stress state and their implementation in the PRINS computational complex

Contact Info

Product

Resources

About