Contemporary Problems of Numerical Modelling of Unique Structures and Buildings

Belostotsky, Alexander M.; Akimov, Pavel A.; Afanasyeva, Irina N.; Kaytukov, Taymuraz B.

doi:10.22337/2587-9618-2017-13-2-9-34

Cited by 24 publications

(7 citation statements)

References 19 publications

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“…For example: ε -(ε = 1,2,… εk… εn) -are numbers of objects; ρ -(ρ = 1,2,…m) -are numbers of stages (works); μερ -the magnitude of possible deviation when combining objects of any stages, "on the left" given to duration of this object erection; ωερ -the magnitude of possible change when combining objects of any stage, "on the right" is given to the duration of the construction of this object; Δεk, εk + 1 -the magnitude of possible combination of any two objects; tερ -work duration of the stage ρ of ε object; Tε = Σρtερ construction duration of ε object; μ(ε1, ε2…, εk…, εn) -sequence of construction objects. The calculation of indexes μ and ω can be defined by next formulas [1,9]:…”

Section: Methodsmentioning

confidence: 99%

“…The peculiarity of the digital economy is its rapid development, in which every few years there are technologies that bring changes in the economy of almost all countries and change the universe [11,12,13,14,15,16]. The theoretical analysis of scientific sources [1,8,9,10] made it possible to conclude that when constructing buildings of different types and sizes, the sequence of the construction objects has an impact on total period of their construction. Depending on the sequence of construction and different time of work, on the same stages on each object, there are different variations of their combination.…”

Section: Literature Reviewmentioning

confidence: 99%

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The Economic-Mathematical Development of Buildings Construction Model Optimization on the Basis of Digital Economy

Ткаченко

Kwiliński

Klymchuk

et al. 2019

Management Systems in Production Engineering

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The article presented the scientific research of buildings construction optimization problems on the basis of interdisciplinary approach that provides synergy of modern approaches of construction organization and technology, economic theory and political economy, as well as applied mathematics. The formation and realization of the economic-mathematical model of optimal sequence groups of construction objects are considered on the basis of a method of sequential analysis of variants, based on dynamic programming. According to the provided research results the proposals were made for acceleration of these processes in construction through the development of program complex “Optimization of object construction process by the criterion of time” on the basis of mathematical modeling methods, which provided the opportunity to further optimize and obtain consistency and reduce the construction terms of this buildings groups for almost a year (360 days or 61%).

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Section: Methodsmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

The Economic-Mathematical Development of Buildings Construction Model Optimization on the Basis of Digital Economy

Ткаченко

Kwiliński

Klymchuk

et al. 2019

Management Systems in Production Engineering

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show abstract

“…It is to be noted that both diversity and application-oriented [3][4][5][6][7][8][9][10][11][12] nature of this novel discipline often results in the challenge to come to a decision on practical needs by model and simulation it is necessary to interpret appropriately them in model terms. Hence, it is not possible to resolve the problem of interpretation for matters reach in content of reality in model terms automatically.…”

Section: Modeling and Simulation As An Emerging Disciplinementioning

confidence: 99%

A Review of Modelling and SimulationTechniques for Life Support Systems and Queueing Systems

A Mageed

2024

Preprint

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This paper provides an overview of modelling and simulation methods for complex systems, including queuing and life support systems. To realize and capture every aspect of a system or situation, a model is used in place of the actual one. Using a model and simulation, we may create scenarios and make decisions. Computer experiments with the model can save costs, time, and effort once its validity has been shown. A model of the thing under study is created by computer simulation, which then runs the model on a digital computer and examines the results. It's interesting to note that a knowledge base of data includes information about predicted behaviour of the model as well as coordinated determination of external variables and parameters. Selecting the precise model creation technique is the first and most difficult task in simulation. A review of techniques used in simulation model execution (serial and parallel discrete-event simulation), simulation model analysis (calibration, validation, verification, goal-seeking), and conceptual, declarative, functional, constraint, and multimodal design are presented in this paper.

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“…matrix and the column of nodal forces of the prismatic finite element, standard for FEM[19][20][21][22][23][24][25][26][27][28][29][30].…”

mentioning

confidence: 99%

Application of finite elements of various dimensions in strength calculations of thin-wall constructions of agro-industrial complex

et al. 2020

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The article presents a comparative analysis of the effectiveness of the use of finite elements of various dimensions in the study of the stress-strain state (SSS) of objects of the agro-industrial complex (AIC). To determine the strength parameters of the AIC objects, which can be attributed to the class of thinwalled, it is proposed to use a two-dimensional finite element in the form of a fragment of the middle surface of a triangular shape with nodes at its vertices. To improve the compatibility of a two-dimensional finite element at the boundaries of adjacent elements, it is proposed to use the Lagrange multipliers introduced in additional nodes located in the middle of the sides of the triangular fragment as additional unknowns. It is proposed to use a three-dimensional finite element in the form of a prism with triangular bases to study the SSS of agricultural objects of medium thickness and thick-walled. To improve the compatibility of the prismatic element, Lagrange multipliers in the middle of the sides of the upper and lower bases are also used. On the example of calculating a fragment of a cylindrical pipeline rigidly clamped at the ends loaded with internal pressure, the effectiveness of the developed two-dimensional and three-dimensional finite elements with Lagrange multipliers was proved. The validity of the use of a twodimensional element for researching the SSS of agricultural objects belonging to the class of thin-walled was proved.

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Contemporary Problems of Numerical Modelling of Unique Structures and Buildings

Cited by 24 publications

References 19 publications

The Economic-Mathematical Development of Buildings Construction Model Optimization on the Basis of Digital Economy

The Economic-Mathematical Development of Buildings Construction Model Optimization on the Basis of Digital Economy

A Review of Modelling and SimulationTechniques for Life Support Systems and Queueing Systems

Application of finite elements of various dimensions in strength calculations of thin-wall constructions of agro-industrial complex

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