发布求助
文献互助 智能选刊 最新文献

Journal of Applied Mechanics and Technical Physics最新文献

筛选
英文 中文
Initiation and Stabilization of Supersonic Combustion by a High-Speed Spherical Body in a Reactive Gas 反应气体中高速球体超声速燃烧的起爆与稳定
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-02-08 DOI: 10.1134/S0021894425700385
V. A. Vasetskii, V. M. Grishchenko, V. V. Leshchevich, O. G. Penyaz’kov
{"title":"Initiation and Stabilization of Supersonic Combustion by a High-Speed Spherical Body in a Reactive Gas","authors":"V. A. Vasetskii,&nbsp;V. M. Grishchenko,&nbsp;V. V. Leshchevich,&nbsp;O. G. Penyaz’kov","doi":"10.1134/S0021894425700385","DOIUrl":"10.1134/S0021894425700385","url":null,"abstract":"<p>Experimentally obtained shadowgraph images of the shock-wave structure of an unsteady supersonic reactive flow in a hydrogen–oxygen mixture are presented. This flow is generated by a spherical body flying through the mixture at a speed exceeding the propagation velocity of self-sustained detonation. Conditions are determined for the formation of a stabilized oblique detonation wave initiated by the high-speed body in free space and in the presence of a surface forming an internal corner, placed at a specific distance along the flight path of the body.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 5","pages":"827 - 837"},"PeriodicalIF":0.6,"publicationDate":"2026-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147337702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Group Properties of the Equations of Solid Deformation Mechanics with Nonlocal Coefficients 非局部系数固体变形力学方程的群性质
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-01-16 DOI: 10.1134/S0021894425700373
B. D. Annin, S. I. Senashov
{"title":"Group Properties of the Equations of Solid Deformation Mechanics with Nonlocal Coefficients","authors":"B. D. Annin,&nbsp;S. I. Senashov","doi":"10.1134/S0021894425700373","DOIUrl":"10.1134/S0021894425700373","url":null,"abstract":"<p>The group classification problem is solved for equations describing the vibrations of a nonlinear elastic plate in gas flow. Exact solutions of these equations are given which can be used as test solutions in numerical calculations.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 4","pages":"822 - 826"},"PeriodicalIF":0.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ignition of a Supersonic Jet of Premixed Fuel–Air Mixture in a Supersonic Air Flow Using an Electric Discharge 在超声速气流中用放电点燃预混燃料-空气混合物的超声速射流
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-01-16 DOI: 10.1134/S002189442570021X
R. S. Troshkin, L. S. Volkov, A. A. Firsov
{"title":"Ignition of a Supersonic Jet of Premixed Fuel–Air Mixture in a Supersonic Air Flow Using an Electric Discharge","authors":"R. S. Troshkin,&nbsp;L. S. Volkov,&nbsp;A. A. Firsov","doi":"10.1134/S002189442570021X","DOIUrl":"10.1134/S002189442570021X","url":null,"abstract":"<p>The concept of plasma-assisted combustion, which has a series of advantages (reduced ignition time, improved mixing, flame front stabilization), is considered. The work provides the results of a study of the ignition process using a longitudinal direct current discharge of a fuel–air mixture injected at supersonic speed into the core of a supersonic air flow. In order to exclude the influence of mixing, the fuel (ethylene) was premixed with the oxidizer (air). The constructed system for mixing ethylene with air and the system for injecting the resulting mixture into the test section channel are described. For this setup configuration, the results of gas flow simulation in the FlowVision package and the results of experiments on fuel ignition in a supersonic flow are provided.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 4","pages":"647 - 652"},"PeriodicalIF":0.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two-Parameter Criterion for Elastoplastic Fracture of Materials with Anisotropic Plastic Properties 各向异性塑性材料弹塑性断裂的双参数准则
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-01-16 DOI: 10.1134/S0021894425700324
V. D. Kurguzov
{"title":"Two-Parameter Criterion for Elastoplastic Fracture of Materials with Anisotropic Plastic Properties","authors":"V. D. Kurguzov","doi":"10.1134/S0021894425700324","DOIUrl":"10.1134/S0021894425700324","url":null,"abstract":"<p>The initiation of a mixed-type (modes I and II) inclined edge crack in a thin strip of sheet steel under tensile loads is considered. During rolling, the initially isotropic sheet metal typically acquires significant anisotropy characterized by a difference in plastic properties in the rolling and transverse directions. Plastic anisotropy is described using Hill’s quadratic plasticity criterion. The fracture of such materials is described by a modified Leonov–Panasyuk–Dugdale model. Under complex loading, the crack path is bent, and the path bending angle is determined using a force integral failure criterion. In asymptotic representations of the stress components in the vicinity of the crack tip, nonsingular terms (<span>(T)</span>-stresses) are taken into account. A two-parameter strength criterion is proposed to obtain the critical fracture parameters of a strip with an inclined edge crack. The parameters included in the resulting analytical model are analyzed. The dimensionless geometric parameters of the structure were determined numerically using the finite element method. A system of two nonlinear equations is obtained for the critical length of the prefracture zone and the critical load in the case of a complex stress state. The shape and dimensions of the plastic zone near the crack tip in a plastically anisotropic material are determined using Hill’s plasticity criterion.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 4","pages":"769 - 779"},"PeriodicalIF":0.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wave Regimes and Mixing in Bottom Gravity Currents 海底重力流的波态和混流
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-01-16 DOI: 10.1134/S0021894425700257
A. A. Chesnokov, S. K. Tarasov
{"title":"Wave Regimes and Mixing in Bottom Gravity Currents","authors":"A. A. Chesnokov,&nbsp;S. K. Tarasov","doi":"10.1134/S0021894425700257","DOIUrl":"10.1134/S0021894425700257","url":null,"abstract":"<p>A one-dimensional evolutionary system of equations is proposed that describes the motion of a thin bottom gravity current in a submerged environment of a lighter fluid in the Boussinesq approximation, taking into account the development of shear instability and the formation of an intermediate mixing layer. For hydrostatic flows, the propagation velocities of disturbances are determined and the concept of subcritical (supercritical) flow is formulated. An unsteady problem of the mixing layer is considered. Evidently, a monotonic or an oscillating mixing layer as a function of the Froude number of the incoming flow is formed. In the first case of a monotonic mixing layer, maximum entrainment is attained and a stationary solution is determined over a finite interval. For flows with a nonhydrostatic pressure distribution in the lower layer, steady solutions are constructed in the form of second-mode solitary waves adjacent to a given constant flow. Unsteady computations of the formation and propagation of large-amplitude bottom waves are performed.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 4","pages":"683 - 696"},"PeriodicalIF":0.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of the Inclination Angle on Local Characteristics of an Upward Gas-Liquid Flow in a Circular Tube 倾角对圆管内气液向上流动局部特性的影响
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-01-16 DOI: 10.1134/S0021894425700282
A. E. Gorelikova, O. N. Kashinskii, A. S. Kurdyumov
{"title":"Effect of the Inclination Angle on Local Characteristics of an Upward Gas-Liquid Flow in a Circular Tube","authors":"A. E. Gorelikova,&nbsp;O. N. Kashinskii,&nbsp;A. S. Kurdyumov","doi":"10.1134/S0021894425700282","DOIUrl":"10.1134/S0021894425700282","url":null,"abstract":"<p>The structure of an upward bubbly flow in an inclined circular tube is experimentally studied. Local void fraction profiles are obtained using a point conductivity sensor. Wall shear stress is determined using the electrochemical method. Evidently, the tube orientation greatly affects the local characteristics of a gas-liquid flow. Gas phase concentration significantly increases in the upper part of the inclined tube, leading to an increment of maximum values of local void fraction near the wall and to an increase in wall shear stress as compared to a single-phase flow. The most significant increase in friction occurs at inclination angles from 40° to 60°.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 4","pages":"728 - 734"},"PeriodicalIF":0.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of a Jet Vortex Generator on a Turbulent Boundary Layer: 1. Reynolds Stresses 射流涡发生器对湍流边界层的影响雷诺应力
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-01-16 DOI: 10.1134/S0021894425700269
V. V. Markin, P. A. Polivanov, S. D. Salenko, A. A. Sidorenko
{"title":"Effect of a Jet Vortex Generator on a Turbulent Boundary Layer: 1. Reynolds Stresses","authors":"V. V. Markin,&nbsp;P. A. Polivanov,&nbsp;S. D. Salenko,&nbsp;A. A. Sidorenko","doi":"10.1134/S0021894425700269","DOIUrl":"10.1134/S0021894425700269","url":null,"abstract":"<p>The interaction of a streamwise vortex generated by a jet vortex generator with a flat-plate turbulent boundary layer is studied experimentally. The measurements are mostly performed using the PIV method. The results are used to obtain Reynolds stresses and analyze their contribution to the Navier–Stokes equations. Data analysis yields integral dependences characterizing the influence of the streamwise vortex intensity on the turbulent boundary layer. It is found that the presence of the jet vortex generator can lead to a decrease in energy dissipation in the turbulent boundary layer.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 4","pages":"697 - 711"},"PeriodicalIF":0.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Microjets on the Interaction of a Supersonic Jet with a Flat Obstacle 微射流对超音速射流与平面障碍物相互作用的影响
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-01-16 DOI: 10.1134/S0021894425700208
N. P. Kiselev, V. I. Zapryagaev, I. N. Kavun, R. A. Styazhkin, A. A. Pivovarov
{"title":"Effect of Microjets on the Interaction of a Supersonic Jet with a Flat Obstacle","authors":"N. P. Kiselev,&nbsp;V. I. Zapryagaev,&nbsp;I. N. Kavun,&nbsp;R. A. Styazhkin,&nbsp;A. A. Pivovarov","doi":"10.1134/S0021894425700208","DOIUrl":"10.1134/S0021894425700208","url":null,"abstract":"<p>Pressure fluctuations on a semi-infinite flat obstacle impinged by a supersonic underexpanded jet are studied. The nozzle exit Mach number is <span>({{text{M}}_a} = 1)</span>, the jet off-design parameter <span>(n = 2.1)</span>, and the distance from the nozzle exit to the obstacle <span>(h{text{/}}{D_a} = 2{-} 15)</span> (<span>({D_a})</span> is the nozzle exit diameter). It is shown that tangential injection of six microjets can lead to a significant reduction in pressure fluctuations on the obstacle. The mass flow rate through all microjets is 0.3% of the mass flow rate through the main jet. A self-oscillating mass-flow-rate regime of jet–obstacle interaction is found to occur at <span>(h{text{/}}{D_a} &lt; 3)</span>, a self-oscillating regime with acoustic feedback at <span>(3 &lt; h{text{/}}{D_a} &lt; 8)</span>, and a turbulent aperiodic interaction regime at <span>(h{text{/}}{D_a} &gt; 8)</span>.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 4","pages":"637 - 646"},"PeriodicalIF":0.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling the Degradation of Hydrate-Bearing Permafrost: The Role of Osmotic Effects 模拟含水合物永久冻土的退化：渗透效应的作用
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-01-16 DOI: 10.1134/S0021894425700300
M. M. Ramazanov, N. S. Bulgakova, L. I. Lobkovsky
{"title":"Modeling the Degradation of Hydrate-Bearing Permafrost: The Role of Osmotic Effects","authors":"M. M. Ramazanov,&nbsp;N. S. Bulgakova,&nbsp;L. I. Lobkovsky","doi":"10.1134/S0021894425700300","DOIUrl":"10.1134/S0021894425700300","url":null,"abstract":"<p>A mathematical model is developed and used as a basis for numerical experiments pertaining to the study of degradation of ice-containing permafrost rocks, accumulations of metastable (relict) gas hydrates, and free gas under the influence of thermal solutions and brine with account for the osmotic effect. Series of simulations with varying parameters are used to study the patterns and rates of permafrost degradation and methane release. Some of the data obtained using the model with corresponding experimental data shows good agreement.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 4","pages":"745 - 757"},"PeriodicalIF":0.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical Study of the Asymptotics of Material Damage in the Vicinity of a Crack Front during Creep 蠕变过程中裂纹前缘附近材料损伤渐近性的数值研究
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-01-16 DOI: 10.1134/S0021894425700336
L. V. Stepanova, O. N. Belova, D. V. Chapliy, Yu. S. Bykova
{"title":"Numerical Study of the Asymptotics of Material Damage in the Vicinity of a Crack Front during Creep","authors":"L. V. Stepanova,&nbsp;O. N. Belova,&nbsp;D. V. Chapliy,&nbsp;Yu. S. Bykova","doi":"10.1134/S0021894425700336","DOIUrl":"10.1134/S0021894425700336","url":null,"abstract":"<p>This paper presents and discusses the results of finite element calculations of the continuity and stress fields (in a coupled formulation) near a creep crack front performed to determine the asymptotic distributions of stresses and continuity (damage) near the notch edge. The shape of the material damage region during creep growth ahead of the notch tip is determined for various values of material constants. An analysis of the radial stress distributions obtained in the finite element calculations shows that damage accumulation changes the asymptotic behavior of stresses near the crack tip in a power-law creeping material. It is shown that in the absence of damage accumulation, the numerical solution of the problem approaches the Hutchinson–Rice–Rosengren asymptotics, whereas accounting for damage accumulation affects the stress field near the notch or crack. The characteristic sizes of the regions of dominance of various asymptotics near the crack tip can be determined using finite-element radial distributions of stresses and continuity.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 4","pages":"780 - 789"},"PeriodicalIF":0.6,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书