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Moscow University Mechanics Bulletin最新文献

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Simulation of Trajectory Parameters of Motion of an Object near the Pole Using Quasi-Geodetic Coordinates 基于准大地坐标系的近极物体运动轨迹参数仿真
IF 0.7
Moscow University Mechanics Bulletin Pub Date : 2025-07-24 DOI: 10.3103/S0027133025700165
S. P. Ablyasova
{"title":"Simulation of Trajectory Parameters of Motion of an Object near the Pole Using Quasi-Geodetic Coordinates","authors":"S. P. Ablyasova","doi":"10.3103/S0027133025700165","DOIUrl":"10.3103/S0027133025700165","url":null,"abstract":"<p>The paper discusses the challenges of inertial navigation in polar regions, where it is impossible to determine the longitude and true heading at the poles. To overcome this difficulty, it is proposed to use quasi-coordinates and quasi-attitude angles, as well as relevant quasi-ECEF and quasi-geodetic coordinate systems. It is proved that the quasi-geodetic (quasi-geocentric) coordinates, quasi-attitude angles, velocity of an object and inertial sensors readings can be simulated by using quasi-coordinates instead of traditional ones.</p>","PeriodicalId":710,"journal":{"name":"Moscow University Mechanics Bulletin","volume":"80 2","pages":"94 - 98"},"PeriodicalIF":0.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Teaching Mechanics Courses to Mathematics Students 向数学专业学生讲授力学课程
IF 0.7
Moscow University Mechanics Bulletin Pub Date : 2025-07-24 DOI: 10.3103/S0027133025700177
V. V. Kozlov, D. V. Georgievskii, A. V. Vlakhova
{"title":"Teaching Mechanics Courses to Mathematics Students","authors":"V. V. Kozlov,&nbsp;D. V. Georgievskii,&nbsp;A. V. Vlakhova","doi":"10.3103/S0027133025700177","DOIUrl":"10.3103/S0027133025700177","url":null,"abstract":"<p>Possible statements of mathematical problems arising from topics in special courses in mechanics are discussed.</p>","PeriodicalId":710,"journal":{"name":"Moscow University Mechanics Bulletin","volume":"80 2","pages":"99 - 102"},"PeriodicalIF":0.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectral Decompositions in Dynamic Linear Viscoelasticity Problems for Piecewise Homogeneous Bodies 分段均匀体动态线性粘弹性问题的谱分解
IF 0.7
Moscow University Mechanics Bulletin Pub Date : 2025-07-24 DOI: 10.3103/S0027133025700128
S. G. Pshenichnov
{"title":"Spectral Decompositions in Dynamic Linear Viscoelasticity Problems for Piecewise Homogeneous Bodies","authors":"S. G. Pshenichnov","doi":"10.3103/S0027133025700128","DOIUrl":"10.3103/S0027133025700128","url":null,"abstract":"<p>The nonstationary dynamic viscoelasticity problem for a piecewise homogeneous body is considered. It is known that, under certain conditions, the construction of a solution to such a problem can be reduced to finding the eigenvalues of the free oscillation problem. The properties of a spectral set are considered, and a method for searching for its elements if proposed. The theoretical considerations are used to study the unsteady dynamics of a piecewise homogeneous viscoelastic plane-parallel layer. For some specific parameters of this layer, the elements of the spectrum are found, and, then, the transition wave process is studied.</p>","PeriodicalId":710,"journal":{"name":"Moscow University Mechanics Bulletin","volume":"80 2","pages":"63 - 72"},"PeriodicalIF":0.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Possibility of Dissipative Stabilization of a Periodic Motion of a System with One Degree of Freedom 一自由度系统周期运动耗散稳定的可能性
IF 0.7
Moscow University Mechanics Bulletin Pub Date : 2025-07-24 DOI: 10.3103/S0027133025700153
V. A. Zubenko, E. I. Kugushev, T. V. Shakhova
{"title":"On the Possibility of Dissipative Stabilization of a Periodic Motion of a System with One Degree of Freedom","authors":"V. A. Zubenko,&nbsp;E. I. Kugushev,&nbsp;T. V. Shakhova","doi":"10.3103/S0027133025700153","DOIUrl":"10.3103/S0027133025700153","url":null,"abstract":"<p>A conservative system with one degree of freedom admitting a periodic motion is considered. The system is located on a translationally moving base. Linear viscous friction forces are added to the forces acting on the points of the system. We determine the law of motion of the base that allows preserving the periodic motion of the initial system relative to this base. The conditions when the periodic motion becomes Lyapunov asymptotically stable are obtained by using the Vazhevsky inequality.</p>","PeriodicalId":710,"journal":{"name":"Moscow University Mechanics Bulletin","volume":"80 2","pages":"89 - 93"},"PeriodicalIF":0.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Vector Properties of Elastoplastic Processes of Deformation along Plane Paths of Moderate Curvature 中等曲率平面变形弹塑性过程的矢量性质
IF 0.7
Moscow University Mechanics Bulletin Pub Date : 2025-07-24 DOI: 10.3103/S0027133025700141
A. V. Muravlev, M. A. Stepina
{"title":"Vector Properties of Elastoplastic Processes of Deformation along Plane Paths of Moderate Curvature","authors":"A. V. Muravlev,&nbsp;M. A. Stepina","doi":"10.3103/S0027133025700141","DOIUrl":"10.3103/S0027133025700141","url":null,"abstract":"<p>Various hypotheses proposed with the Il’yushin plasticity theory framework and expressed in terms of ODEs and multiple integrals are studied. One of the key aspects of this approach is a classification of constitutive equations by the complexity of loading for which a certain relation is suitable. Some relations of markedly different forms are proposed for a group of strain paths with moderate curvatures; this group is the most general kind of stress-strain relations in this classification. In the present paper the connections between those relations are discussed.</p>","PeriodicalId":710,"journal":{"name":"Moscow University Mechanics Bulletin","volume":"80 2","pages":"81 - 88"},"PeriodicalIF":0.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Il’yushin’s Particular Postulate and Nonlinear Relations for Anisotropic Bodies 各向异性体的伊留申特殊公设与非线性关系
IF 0.7
Moscow University Mechanics Bulletin Pub Date : 2025-06-04 DOI: 10.3103/S0027133025700086
A. A. Markin, M. Yu. Sokolova, D. V. Khristich
{"title":"Il’yushin’s Particular Postulate and Nonlinear Relations for Anisotropic Bodies","authors":"A. A. Markin,&nbsp;M. Yu. Sokolova,&nbsp;D. V. Khristich","doi":"10.3103/S0027133025700086","DOIUrl":"10.3103/S0027133025700086","url":null,"abstract":"<p>A review of the works devoted to the theoretical study and experimental verification of one of the fundamental hypotheses of the theory of processes by A.A. Il’yushin, the particular postulate of isotropy, as well as the possibility of its generalization to initially anisotropic materials is fulfilled. A formulation of such a generalization is proposed using the concept of invariant subspaces of the symmetry group of an anisotropic material. As an example, within the framework of the proposed generalization, nonlinear constitutive relations for an elastic orthotropic material are constructed.</p>","PeriodicalId":710,"journal":{"name":"Moscow University Mechanics Bulletin","volume":"80 1","pages":"23 - 32"},"PeriodicalIF":0.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Results of Experimental Studies of Creep and Long-Term Strength 蠕变与长期强度试验研究结果
IF 0.7
Moscow University Mechanics Bulletin Pub Date : 2025-06-04 DOI: 10.3103/S0027133025700062
V. V. Nazarov
{"title":"Results of Experimental Studies of Creep and Long-Term Strength","authors":"V. V. Nazarov","doi":"10.3103/S0027133025700062","DOIUrl":"10.3103/S0027133025700062","url":null,"abstract":"<p>The paper presents the current results of experimental studies of the creep properties of metallic materials and related processes. Uniaxial tension, the effect of aging and temperature on the strength of a welded joint, complex stress, and the effect of factors of chemical interaction of the environment on creep and creep rupture strength are considered. An equivalent stress is given that allows describing the difference in creep lifetimes under uniaxial tension and under equal multiaxial tension for the same value of the principal stress.</p>","PeriodicalId":710,"journal":{"name":"Moscow University Mechanics Bulletin","volume":"80 1","pages":"1 - 10"},"PeriodicalIF":0.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Durability of Structural Materials under Variable Loading 结构材料在变载荷作用下的耐久性
IF 0.7
Moscow University Mechanics Bulletin Pub Date : 2025-06-04 DOI: 10.3103/S0027133025700074
E. B. Zavoichinskaya
{"title":"Durability of Structural Materials under Variable Loading","authors":"E. B. Zavoichinskaya","doi":"10.3103/S0027133025700074","DOIUrl":"10.3103/S0027133025700074","url":null,"abstract":"<p>The known physical and phenomenological approaches and failure criteria for structural materials at long-term and variable loading are systematized and their classification are proposed. The modern state of the durability problem is associated with the formulation of multilevel probabilistic models at complex loading, based on the physical laws of processes of brittle and viscous failure.</p>","PeriodicalId":710,"journal":{"name":"Moscow University Mechanics Bulletin","volume":"80 1","pages":"11 - 22"},"PeriodicalIF":0.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wind Power Plants of Oscillatory Type 振荡型风力发电厂
IF 0.7
Moscow University Mechanics Bulletin Pub Date : 2025-06-04 DOI: 10.3103/S0027133025700098
Yu. D. Selyutskiy
{"title":"Wind Power Plants of Oscillatory Type","authors":"Yu. D. Selyutskiy","doi":"10.3103/S0027133025700098","DOIUrl":"10.3103/S0027133025700098","url":null,"abstract":"<p>Wind power generators of oscillatory type use the energy of flow induced vibrations of bodies to generate electricity. Numerous scientific publications are dedicated to development and analysis of various schemes and designs of such devices. The present paper contains a brief review of the literature on this issue.</p>","PeriodicalId":710,"journal":{"name":"Moscow University Mechanics Bulletin","volume":"80 1","pages":"33 - 46"},"PeriodicalIF":0.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Main Research Directions of the Chair of Applied Mechanics and Control 应用力学与控制系主任主要研究方向
IF 0.7
Moscow University Mechanics Bulletin Pub Date : 2025-06-04 DOI: 10.3103/S0027133025700104
Yu. V. Bolotin, P. A. Kruchinin, S. S. Lemak
{"title":"Main Research Directions of the Chair of Applied Mechanics and Control","authors":"Yu. V. Bolotin,&nbsp;P. A. Kruchinin,&nbsp;S. S. Lemak","doi":"10.3103/S0027133025700104","DOIUrl":"10.3103/S0027133025700104","url":null,"abstract":"<p>The article is devoted to the review of scientific achievements of the staff of the Chair of Applied Mechanics and Control, the Laboratories of Control and Navigation and Mathematical Support of Simulation Dynamic Systems in the 21st century.</p>","PeriodicalId":710,"journal":{"name":"Moscow University Mechanics Bulletin","volume":"80 1","pages":"47 - 52"},"PeriodicalIF":0.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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