Results 1 to 10 of about 246 (149)

The Existence Problems of Solutions for a Class of Differential Variational–Hemivariational Inequality Problems

open access: yesMathematics, 2023
In this work, we used reflexive Banach spaces to study the differential variational—hemivariational inequality problems with constraints. We established a sequence of perturbed differential variational–hemivariational inequality problems with perturbed ...
Shih-Sen Chang   +4 more
doaj   +1 more source

Modelling and Numerical Solution of the Problem with Unilateral Constraints and Friction under Dynamic Action of the Load

open access: yesНаука и техника, 2021
Problems with unilateral constraints are not uncommon in the practice of calculating  building construction and structures. Certain difficulties in solving them arise during contact friction, as well as the dynamic action of the load.
A. A. Lukashevich   +2 more
doaj   +1 more source

Optimal Control Problems for Set-Valued Quasivariational Inequalities with Applications

open access: yesMathematics, 2022
In this paper we investigate the optimal control problem for set-valued quasivariational inequality with unilateral constraints. Under suitable conditions, we prove that the solution to the current optimal control problem converges to a solution to old ...
Shih-Sen Chang   +4 more
doaj   +1 more source

Frictional contact problem in building constructions analysis

open access: yesMagazine of Civil Engineering, 2020
The article discusses the contact interaction of deformable building constructions or their parts. Such interaction is realized for example at: hydraulic structures; suspension pile foundations, girder, raft, sheet piling; friction bearings and kinematic
Aleksandr Popov, Alexander Lovtsov
doaj   +1 more source

Multicystic dysplastic disease of kidney in pediatric age group: A series of five cases

open access: yesJournal of the Scientific Society, 2023
Multicystic dysplastic kidney (MCDK) is a congenital somatic maldevelopment in which the renal cortex is replaced by numerous cysts of varying sizes with insinuating dysplastic parenchyma in between.
Sibnath Gayen   +5 more
doaj   +1 more source

Modelling of contact interaction of structures with the base under dynamic loading

open access: yesИнженерно-строительный журнал, 2019
Constructively nonlinear problems with unilateral constraints are frequent in the calculation of various structures. At the same time, certain difficulties cause problems with the contact friction, as well as with the dynamic action of the load.
Anatoliy Lukashevich
doaj   +1 more source

BASICS OF THEORETICAL APPROACHES OF TECHNOLOGICAL PROCESSES WITH REGULAR TOSSING OF THE GRANULAR MEDIUM

open access: yesProceedings of the Mongolian Academy of Sciences, 2017
Vibration interaction is used for development of modern technological processes in which required quality of product is provided due to interaction of the granular medium with the vibrating surface.
A V Eliseev   +3 more
doaj   +1 more source

Tykhonov Well-Posedness and Convergence Results for Contact Problems with Unilateral Constraints

open access: yesTechnologies, 2020
This work presents a unified approach to the analysis of contact problems with various interface laws that model the processes involved in contact between a deformable body and a rigid or reactive foundation.
Mircea Sofonea, Meir Shillor
doaj   +1 more source

Relaxation methods for optimal control problems [PDF]

open access: yesBulletin of Mathematical Sciences, 2020
We consider a nonlinear optimal control problem with dynamics described by a differential inclusion involving a maximal monotone map A : ℝN → 2ℝN. We do not assume that D(A) = ℝN, incorporating in this way systems with unilateral constraints in our ...
Nikolaos S. Papageorgiou   +2 more
doaj   +1 more source

The effect of construction joints and cracks on the stress-strain state of the arch-gravity dam [PDF]

open access: yesИнженерно-строительный журнал, 2013
The aim of the paper was to review the stress-strain state of an arch-gravity dam of the Sayano-Shushenskaya HPP, which has construction and contact joints. The problem is solved by finite element method using software package SOFiSTiK.
G.S. Kolosova, V.V. Lalin, A.V. Kolosova
doaj   +1 more source

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