Программа Расчета Настроек Регуляторов  Методом Расширенных Частотных Характеристик

Margolis, B. I.; Мансур, Г.А.; Mansour, G A

doi:10.15827/0236-235x.123.636-639

ППС

2018

DOI: 10.15827/0236-235x.123.636-639

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Программа Расчета Настроек Регуляторов Методом Расширенных Частотных Характеристик

B. I. Margolis¹,

Г.А. Мансур²,

G A Mansour³

Abstract: В статье рассмотрена постановка задачи расчета настроек типовых общепромышленных регуляторов в системах автоматического управления технологическими объектами. Показана возможность применения критерия устойчивости Найквиста для расширенных частотных характеристик систем. Сформулирована задача обеспечения необходимого качества переходного процесса в замкнутой системе за счет обеспечения заданной степени колебательности. Получено условие заданной колебательности системы, обеспечивающее нахождение настроек регулят… Show more

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2023

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Verification of Core and Solid-State Models of the Scad Computing Complex for the Calculation of Reinforced-Concrete Waffle Slab Floor System

Mozgolov

Kozlova

2023

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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In accordance with modern requirements for the design of buildings, designers are needed to use structural solutions that are resistant to progressive collapse. A space-working caisson-type overlap is one of such solutions. Spatial constructions are repeatedly statically indeterminate systems and their calculation is performed on a computer in software complexes based on the finite element method. A ribbed model can be created from various types of finite elements and get data that varies. One of the ways to control the finite element method is to calculate structures using different models. The purpose of the work is to search for the simplest and most accurate finite element model for calculating a ribbed reinforced concrete waffle slabs. The work is a continuation of verification studies of SCAD models for calculating reinforced concrete waffle slabs with a size of 9.0 x 11.55 m. The bending moments in the beams obtained by the analytical method using a rod model and a model created from three-dimensional elements are compared. The values of bending moments calculated analytically and using a solid-state model have similar values. The maximum deviations of the FEM from the analytical method of calculation are from -0.9 to +11.6%. The values of bending moments calculated using a solid-state model and a rod model have similar values. The maximum deviations range from -9.7 to +6.3%. The finite element model, the calculation of which is based on solving the volumetric problem of elasticity theory, is effective, but time-consuming to create and difficult to analyze the data obtained.

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Verification of Core and Solid-State Models of the Scad Computing Complex for the Calculation of Reinforced-Concrete Waffle Slab Floor System

Mozgolov

Kozlova

2023

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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Influence of Granulometric Composition of the Composite Gypsum Binder on Its Properties

Othman

Чернышева

Drebezgova

et al. 2023

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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The primary task of technologists-designers is to optimize the structure and properties of building composite materials. Its achievement allows simultaneously increasing their efficiency, reliability and durability. The article presents the results of determining the granulometric composition of a composite gypsum binder (CGB) by computational and experimental modeling using the known equations of "ideal" curves. Due to the fact that when designing the binder composition, one of the main tasks is to optimize its structure at the micro level with finding the best ratios sizes and quantitative content of particles in the hardening system to create a dense packing, in the work a comparison is made of the granulometric compositions of 3, 4 and 5-component KGV. It has been established that the developed 5-component composition of KGV, including (% by weight): 68 % gypsum binder (G5B-II - 70% and GVVS-16 – 30 %), 10 % Portland cement, 20% fine quartz sand, 0.5 % metakaolin VMK-45 and 1.5% limestone dust, in terms of the ratio of components and their granulometric composition, deviates from that calculated using a computer program using the equations of the "optimal" Funk-Dinger curve by 15.3 %, which causes a denser packing of its particles with an increase in average density, strength indicators and softening coefficient even with a decrease in the content of gypsum binder

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Программа Расчета Настроек Регуляторов Методом Расширенных Частотных Характеристик

Cited by 2 publications

References 1 publication

Verification of Core and Solid-State Models of the Scad Computing Complex for the Calculation of Reinforced-Concrete Waffle Slab Floor System

Verification of Core and Solid-State Models of the Scad Computing Complex for the Calculation of Reinforced-Concrete Waffle Slab Floor System

Influence of Granulometric Composition of the Composite Gypsum Binder on Its Properties

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