- Experimental determination of the filtration parameters of the porous medium model based on measurements in non-stationary conditions
Khuzhayorov, Bakhtiyor, Usmanov, Azizbek, Tuygunov, Javlonbek, Хужаёров, Б, Усмонов, А, Туйгунов, Ж, Xuzhayorov, Baxtiyor, Usmanov, Azizbek, Tuygunov, Javlonbek · Mexanika muammolari jurnali · 2026-10-15
The work experimentally examines water filtration in a porous-medium model. Based on measurements of filtration characteristics under stationary conditions, the filtration law was determined and found to agree with the…
- Experimental Study of the Wet Leather Wringing Process Using a Combination of Working Rollers
Igamberdiev, Bahodir, Игамбердиев, Баходир, Igamberdiev, Bahodir · Mexanika muammolari jurnali · 2026-10-14
This article presents an experimental study and analysis of the dewatering process for wet leather semi-finished products using a wringing roller with a cermet working surface, as well as other roller combinations. For…
- Improvement and Research of a Machine for the Pre-Finishing of Leather and Fur
Tursunboyev, Lochinbek, Турсунбоев, Лочинбек, Tursunboyev, Lochinbek · Mexanika muammolari jurnali · 2026-10-14
The article presents a systematic review of technological machines and devices, as well as technologies for grinding and finishing leather and the dermal tissue of fur. A grinding machine has been developed that enables…
- Исследование влияния плотности семенного валика на деформацию чувствительного элемента фартука линтера
Akhmedov, Khamidulla, Ergashev, Ilhom, Dalibekov, Lochinbek, Ахмедов, Хамидулла, Эргашев, Илхом, Далибеков, Лочинбек, Axmedov, Xamidulla, Ergashev, Ilhom, Dalibekov, Lochinbek · Mexanika muammolari jurnali · 2026-10-14
Background: monitoring the density of the seed roll in the working chamber of a linter machine is important for stabilizing the techno- logical process and reducing energy consumption. Methods: an analytical…
- Mathematical modelling of pollutant dispersion in the atmosphere with allowance for the spatial--temporal variation of temperature
Nabiyeva, I, Juraboyeva, O, Набиева, И, Джурабоева, O, Nabiyeva, I, Juraboyeva, O · Mexanika muammolari jurnali · 2026-10-14
A three-dimensional model is developed for the dispersion of harmful substances in the atmospheric surface layer with allowance for the spatial–temporal variation of temperature. The advection–diffusion equation for the…
- Development of a mathematical model of an electrohydraulic vehicle control system considering changes in temperature conditions
Annakulova, Gulsara, Astanov, Bekzod, Saidov, Sarvar, Аннакулова, Г, Астанов, В, Саидов, С, Annakulova, Gulsara, Astanov, Bekzod, Saidov, Sarvar · Mexanika muammolari jurnali · 2026-09-30
A mathematical model of a thermo-hydraulic system has been developed based on the analysis of heat transfer in a hydraulic circuit containing a piston hydraulic cylinder, a hydraulic pump, and a hydraulic directional…
- Mathematical model of groundwater head variation processes in heterogeneous porous media
Murodullayev, Bakhtiyor, Kodirov, Rustam, Haqnazarova, Dilobar, Муродуллаев, Бахтиёр, Кодиров, Рустам, Хакназарова, Дилобар, Murodullayev, Baxtiyor, Kodirov, Rustam, Haqnazarova, D · Mexanika muammolari jurnali · 2026-09-30
This study develops a mathematical formulation and numerical solution for determining the spatial–temporal distribution of the groundwa- ter head in heterogeneous porous media, and illustrates them with a transient…
- Comparative Analysis of the Finite-Difference Method of Finite Elements in Heat Conduction Modeling
Nazarov, Farrukh, Amirova, Dilnoza, Назаров, Ф, Амирова, Д, Nazarov, Farrux, Amirova, Dilnoza · Mexanika muammolari jurnali · 2026-09-30
In this paper, heat transfer equations describing heat propagation processes in solids, liquids, and gases are considered. The physical nature of heat conduction, the fundamental laws governing heat transfer, and their…
- A two-scale numerical model of mass transport and adsorption in a cylindrical radial-flow filter
Boborahimov, Bakhtiyor, Ermonova, Mohinur, Usmonov, Lochinbek, Боборахимов, Б, Эрмонова, М, Usmonov, Л, Boborahimov, Baxtiyor, Ermonova, Mohinur, Usmonov, Lochinbek · Mexanika muammolari jurnali · 2026-09-30
A two-scale (macro–micro) mathematical model and a verified numerical method are developed for mass transport and adsorption in an annular cylindrical filter under inward radial flow. At the macro scale, an axisymmetric…
- A Spectral-Grid Method for the Stability Analysis of the Blasius Boundary Layer and the Dynamics of the Velocity Vector
Normurodov, Chori, Tilovov, Muhriddin, Murodov, Sardorbek, Raimov, Abdulla, Djurayeva, Nasiba, Нормуродов, Чори, Тиловов, Мухриддин, Муродов, Сардорбек, Раимов, Абдулла, Джураева, · Mexanika muammolari jurnali · 2026-09-30
This study investigates the longitudinal and transverse components of linear perturbations in the Blasius boundary layer within the framework of local hydrodynamic stability analysis. The base-flow profile is determined…
- Stress and strain state of a square bar under complex loading
Turdibekov, Javlonbek, Турдибеков, Жавлонбек, Turdibekov, Javlonbek · Mexanika muammolari jurnali · 2026-09-30
Background: Elastoplastic tension and torsion of a homogeneous square bar are examined for sequential and proportional loading paths. Methods: A displacement formulation is used: plastic shear strains contribute to the…
- Diffraction of an SH wave by a filled elliptic cylinder in a viscoelastic medium
Sabirova, R, Сабирова, Р, Sabirova, R · Mexanika muammolari jurnali · 2026-09-30
Diffraction of a time-harmonic SH wave by a filled elliptic cylinder in an unbounded viscoelastic medium with the Rzhanitsyn–Koltunov kernel is studied; the unfilled cavity is analysed first. The freezing method reduces…
- Solution of Hydrodynamic Problems Using a Universal Conservative Scheme for Transport of Conservative Admixtures Coupled with an Algorithm for Solving the Navier--Stokes Equations
Mirsaidov, M, Savitsky, A, Salokhiddinov, A, Мирсаидов, M, Савицкий, A, Салохиддинов, A, Mirsaidov, M, Savitsky, A, Saloxiddinov, A · Mexanika muammolari jurnali · 2026-09-30
An algorithm for computational hydromechanics is presented that combines an absolutely conservative transport scheme for momentum and admixtures with explicit finite-difference approximations. The study addresses key…
- Forced bending vibrations of a polymer pipe conveying an ideal fluid
Boltayev, Zafar, Mirzoyeva, Gulzira, Salimova, Dildora, Isayev, Nurbek, Болтаев, Зафар, Мирзоева, Гульзира, Салимова, Дильдора, Исаев, Нурбек, Boltayev, Zafar, Mirzoyeva, Gulzira, · Mexanika muammolari jurnali · 2026-09-30
The paper considers forced bending vibrations of a polymer pipe conveying an ideal fluid. The influence of the fluid flow on the forced vibrations of the polymer pipe under an external driving force is studied…
- Numerical Solution of the Plane Dynamic Problem of Elasticity in Terms of Stresses
Bobonazarov, Akmal, Khaldjigitov, Abduvali, Tilovov, Otajon, Бобоназаров, Акмал, Халджигитов, Абдували, Тиловов, Отажон, Bobonazarov, Akmal, Xaldjigitov, Abduvali, Tilovov, Otajon · Mexanika muammolari jurnali · 2026-09-30
This study addresses the formulation and numerical solution of a plane dynamic elasticity problem in which the stress tensor components are the primary unknowns. The objective is to develop a numerical algorithm for…
- Solving the problem of stabilizing a given position and programmed motion of an anthropomorphic robotic arm
Akhmatov, Azizbek, Ахматов, А, Axmatov, Azizbek · Mexanika muammolari jurnali · 2026-09-30
A three-link anthropomorphic robotic arm moving in a vertical plane with viscous friction in the joints is considered. The problems of stabilizing a given position and a programmed motion are solved under the condition…
- Transverse vibrations of a rectangular plate on an elastic foundation based on the bimoment theory
Usarov M.K., Askarkhodjaev Sh.I., Usanov F.A., Усаров М. К., Аскарходжаев Ш. И., Усанов Ф. А., Usarov M.K., Askarkhodjaev Sh.I., Usanov F.A. · Mexanika muammolari jurnali · 2026-06-30
The article considers the dynamic problem of transverse vibrations of a rectangular plate on an elastic foundation, with all edges fixed, under normal loads applied to its face surface, based on the bimoment theory of…
- Comparative analysis of experimental results of beam deflections with data from two theoretical models
Khasanov A.Z., Khaydarova K.Kh., Хасанов А.З., Хайдарова К.Х., Khasanov A.Z., Khaydarova K.Kh. · Mexanika muammolari jurnali · 2026-06-30
This study presents a theoretical and experimental investigation of the static deflection of a beam interacting with a soil foundation based on the Winkler model and Vlasov’s variational method. In the Winkler model…
- Seismic dynamics of a bridge span interacting with deformable supports
Mardonov B.M., Nishonov N.A., Berdibayev M.J., Xurramov A.Ch., A'zamov R.R., Мардонов Б.М., Нишонов Н.А., Бердибаев М.Ж., Хуррамов А.Ч., Аъзамов Р.Р., Mardonov B.M., Nishonov N.A., · Mexanika muammolari jurnali · 2026-06-30
In engineering practice, problems frequently arise involving the analysis of groups of piles embedded in soil at different penetration depths. Particular attention is given to evaluating the influence of the surrounding…
- Assessment of the strength of earth dams under multicomponent kinematic excitations
Mirsaidov M.M., Toshmatov E.S., Ishmatov A.N., Yarashov J.A., Urinov B.X., Mирсаидов М.М., Тошматов Э.С., Ишматов А.Н., Ярашов Ж.А., Уринов Б.Х., Mirsaidov M.M., Toshmatov E.S., Is · Mexanika muammolari jurnali · 2026-06-30
This paper presents a comprehensive analysis of the current state of research on the assessment of the stress–strain state and dynamic behavior of earth dams (under plane strain conditions), taking into account the…
- Comprehensive Investigation of the Nonlinear Deformation and Tensile Failure of Cotton Yarn: Experimental and Numerical Modeling
Sultanov K.S., Ismoilova S.I., Khazratova T.Ya., Begmanov R.A., Султанов К.С., Исмоилова С.И., Хазратова Т.Я., Бегманов Р.А., Sultanov K.S., Ismoilova S.I., Khazratova T.Ya., Begma · Mexanika muammolari jurnali · 2026-06-30
This study presents a comprehensive investigation of the tensile behavior of cotton yarn up to failure under conditions of nonlinear deformation. The object of the study is cotton yarn with a linear density of 20 tex…