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
USE OF ONE-DIMENSIONAL NETWORK MODELS OF BLOOD FLOW TO ASSESS HEMODYNAMIC INDICES IN STENOTIC CORONARY ARTERIES 应用一维血流网络模型评估狭窄冠状动脉血流动力学指标
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030180
S. S. Simakov
{"title":"USE OF ONE-DIMENSIONAL NETWORK MODELS OF BLOOD FLOW TO ASSESS HEMODYNAMIC INDICES IN STENOTIC CORONARY ARTERIES","authors":"S. S. Simakov","doi":"10.1134/S0021894424030180","DOIUrl":"10.1134/S0021894424030180","url":null,"abstract":"<p>This paper presents an analysis of the effectiveness of using one-dimensional network models for virtual assessment of the hemodynamic indices widely used in clinical practice to choose a treatment strategy for coronary heart disease with stenotic coronary arteries. It is shown that existing approaches make it is possible to assess hemodynamic indices based on clinical data collected without intervention into the body with an accuracy comparable to the accuracy of the input data and direct measurements. It is also important to take into account the state of the myocardial microvasculature and its influence on the interpretation of modeling results and direct clinical measurements.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"563 - 572"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798403","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
STUDY OF RESTRAINED TORSION OF THIN-WALLED OPEN-SECTION BEAMS USING THE ASYMPTOTIC SPLITTING METHOD 用渐近分裂法研究薄壁开截面梁的约束扭转
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S002189442403012X
A. G. Gorynin, G. L. Gorynin, S. K. Golushko
{"title":"STUDY OF RESTRAINED TORSION OF THIN-WALLED OPEN-SECTION BEAMS USING THE ASYMPTOTIC SPLITTING METHOD","authors":"A. G. Gorynin,&nbsp;G. L. Gorynin,&nbsp;S. K. Golushko","doi":"10.1134/S002189442403012X","DOIUrl":"10.1134/S002189442403012X","url":null,"abstract":"<p>A problem of restrained torsion of thin-walled beams under the action of an end torque is considered. The asymptotic splitting method is applied to obtain a system of resolving equations that describes combined torsion, tension-compression, and bending of the beam. The example of typical cross sections is used to compare the resulting model with a stress-strain state in the beam, determined in the calculation using the developed model and three-dimensional numerical calculation by the finite element method. The resulting mathematical model is analyzed and its advantages are revealed and compared to the widely used Vlasov theory. It is shown that the developed model does not contain the restrictions imposed by the Vlasov theory hypotheses, such as the nondeformability of the cross-sectional contour and the absence of shear strains on the middle surface. The resulting model makes it possible in many cases to more accurately determine the emerging stress-strain state. In particular, it is shown that the developed model accounts for the presence of a boundary layer near the clamped end, which arises during torsion of angle sections and makes a significant contribution to longitudinal stresses, while the Vlasov theory does not allow for the recovery of the arising longitudinal stresses.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"502 - 518"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798393","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
DESIGNING A NEW EXPERIMENTAL SYSTEM FOR STUDYING SLIDING ON SNOW 设计一种新的研究雪地滑行的实验系统
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030179
A. Yu. Larichkin, D. V. Tikhvinskii, D. V. Parshin
{"title":"DESIGNING A NEW EXPERIMENTAL SYSTEM FOR STUDYING SLIDING ON SNOW","authors":"A. Yu. Larichkin,&nbsp;D. V. Tikhvinskii,&nbsp;D. V. Parshin","doi":"10.1134/S0021894424030179","DOIUrl":"10.1134/S0021894424030179","url":null,"abstract":"<p>In this paper, we present a brief review of experimental approaches to the study of the sliding tribology of various bodies on snow or ice and propose a model and a digital twin of a tribological system. The distribution of the deformation of a tank filled with snow rotating at a specific speed was obtained by numerical simulation, and the work done by the friction force per sliding cycle was determined by testing the motion of a ski sample on a flat snow surface. The proposed system can be used to evaluate the sliding performance on snow at given temperature, snow structure, humidity, and the roughness of the ski surface sliding on snow.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"554 - 562"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798402","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
EVOLUTION OF THE MATHEMATICAL MODEL CHARACTERIZING THE THERMAL FIELD DEVELOPED IN SUBMERGED ARC WELDING 埋弧焊热场数学模型的演化
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030076
J. Dutta
{"title":"EVOLUTION OF THE MATHEMATICAL MODEL CHARACTERIZING THE THERMAL FIELD DEVELOPED IN SUBMERGED ARC WELDING","authors":"J. Dutta","doi":"10.1134/S0021894424030076","DOIUrl":"10.1134/S0021894424030076","url":null,"abstract":"<p>A two-dimensional exact analytical solution of the thermal field developed during the submerged arc welding process with visualization of the thermal surface contour for analyzing the heat flow in the domain with the hybrid application of Duhamel’s theorem and finite integral transform approach is obtained. The thermal field arising in submerged arc welding of thick EH36 steel plates is studied. An ellipsoidal heat source model is assumed. The developed thermal field is investigated with variations of several process parameters, such as the heat source velocity, heat input, and lag time of movement of the heat source involved in the welding process.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"456 - 464"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798398","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
TORSION OF A TWO-LAYER ELASTIC ROD WITH A BOX SECTION 具有箱形截面的两层弹性杆的扭力
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030155
S. I. Senashov, I. L. Savostyanova, A. Yu. Vlasov
{"title":"TORSION OF A TWO-LAYER ELASTIC ROD WITH A BOX SECTION","authors":"S. I. Senashov,&nbsp;I. L. Savostyanova,&nbsp;A. Yu. Vlasov","doi":"10.1134/S0021894424030155","DOIUrl":"10.1134/S0021894424030155","url":null,"abstract":"<p>A two-layer rod with a box section twisted by angle <span>(theta)</span> under the action of shear stresses is considered. It is assumed that the rod deformations are elastic and its lateral surface is stress-free. The layers have different elastic properties and different thicknesses. The contact line between the layers is assumed to be rigid, i.e., the stresses on it are the same. An exact solution describing the stress state of this structure is constructed using conservation laws. The stress state is determined at each point of the cross section using outer contour integrals.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"536 - 542"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798400","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
THERMOVISCOELASTIC MODEL OF SURFACE LAYER TREATMENT WITH VARIABLE VISCOSITY 变粘度表面层处理的热粘弹性模型
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S002189442403009X
A. G. Knyazeva
{"title":"THERMOVISCOELASTIC MODEL OF SURFACE LAYER TREATMENT WITH VARIABLE VISCOSITY","authors":"A. G. Knyazeva","doi":"10.1134/S002189442403009X","DOIUrl":"10.1134/S002189442403009X","url":null,"abstract":"<p>The behavior of a material under laser surface treatment taking into account melting is described. A Maxwell model accounting for the changes in heat capacity and viscosity with changing temperature and material composition is presented. Based on this model, a model describing the change in the properties of a flat layer material subjected to a moving heat source is developed. An algorithm for the numerical solution of the formulated problem is presented. Examples are given showing the effect of heat loss, coupling, melting, chemical reactions, and their acceleration due to the stress work on the properties of the material.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"476 - 487"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798395","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
PHYSICOMATHEMATICAL MODELING OF PROJECTILE PENETRATION INTO FLEXIBLE FABRIC TARGETS 弹丸侵彻柔性织物目标的物理数学建模
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030167
A. V. Petyukov, A. I. Bobrova, I. R. Grishin, D. A. Ivanov, M. Yu. Sotskii
{"title":"PHYSICOMATHEMATICAL MODELING OF PROJECTILE PENETRATION INTO FLEXIBLE FABRIC TARGETS","authors":"A. V. Petyukov,&nbsp;A. I. Bobrova,&nbsp;I. R. Grishin,&nbsp;D. A. Ivanov,&nbsp;M. Yu. Sotskii","doi":"10.1134/S0021894424030167","DOIUrl":"10.1134/S0021894424030167","url":null,"abstract":"<p>A simplified numerical method for simulating projectile penetration into fabric targets is proposed which takes into account the weavearchitecture, inter-yarn friction, projectile–fabric friction, and the transverse dimensions of the fabric. The necessary design parameters were selected from a comparison of experimental and calculated data. The proposed method was used to estimate the ballistic resistance of a composite armor reducing the after-penetration effect. The influence of the projectile shape on the ballistic resistance of fabric armor was investigated.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"543 - 553"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798401","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
INCREASE IN APPROXIMATION ORDER OF CALCULATIONS OF WAVE PROCESSES IN A COMPOSITE SAMPLE WHEN USING AN UNSTRUCTURED COMPUTATIONAL GRID 当使用非结构化计算网格时，复合样品中波动过程计算的近似阶数增加
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030143
A. V. Vasyukov, I. B. Petrov
{"title":"INCREASE IN APPROXIMATION ORDER OF CALCULATIONS OF WAVE PROCESSES IN A COMPOSITE SAMPLE WHEN USING AN UNSTRUCTURED COMPUTATIONAL GRID","authors":"A. V. Vasyukov,&nbsp;I. B. Petrov","doi":"10.1134/S0021894424030143","DOIUrl":"10.1134/S0021894424030143","url":null,"abstract":"<p>A grid-characteristic numerical method based on tetrahedron grids is applied to simulate wave processes in a composite material under the action of a pulsed shock load. An approach is proposed to increase the approximation order of the method on an unstructured grid in the three-dimensional case. Computational results for load pulse propagation in a three-layer composite are presented.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"528 - 535"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798391","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
REACTIVE HOT PRESSING OF B4C–CrB2 CERAMICS AND ITS MECHANICAL PROPERTIES B4C-CrB2 陶瓷的反应热压及其力学性能
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-10-28 DOI: 10.1134/S0021894424020068
D. V. Dik, T. S. Gudyma, A. A. Filippov, V. M. Fomin, Yu. L. Krutskii
{"title":"REACTIVE HOT PRESSING OF B4C–CrB2 CERAMICS AND ITS MECHANICAL PROPERTIES","authors":"D. V. Dik,&nbsp;T. S. Gudyma,&nbsp;A. A. Filippov,&nbsp;V. M. Fomin,&nbsp;Yu. L. Krutskii","doi":"10.1134/S0021894424020068","DOIUrl":"10.1134/S0021894424020068","url":null,"abstract":"<p>Ceramic composites based on B<sub>4</sub>C with a CrB<sub>2</sub> mole fraction of 0–30% were obtained by reactive hot pressing of a mixture of B<sub>4</sub>C, Cr<sub>2</sub>O<sub>3</sub>, and nanofibrous carbon at a uniaxial pressure of 17.5 MPa and a temperature of 2000 °C for 10 min. The possibility of boron carbide reduction of metal oxide during hot pressing was studied. During the synthesis of CrB<sub>2</sub>, the density of B<sub>4</sub>C was found to increase due to the formation of the CrB<sub>2</sub>–B<sub>4</sub>C eutectic liquid phase. The relative density of all B<sub>4</sub>C–CrB<sub>2</sub> composites obtained under these conditions exceeds 90%. Experimental dependences of the microhardness and elastic modulus of samples on the concentration of the CrB<sub>2</sub> plastic phase were obtained. The dependences of the elastic modulus of the heterogeneous material on the volume fraction of chromium diboride were determined taking into account porosity by sequentially using the Reuss and Voigt averaging schemes.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 2","pages":"249 - 256"},"PeriodicalIF":0.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555235","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
EXPERIMENTAL INVESTIGATION OF THE MECHANICAL CHARACTERISTICS OF PHOTOLUMINESCENT COMPOSITE MATERIALS 光致发光复合材料力学特性的实验研究
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-10-28 DOI: 10.1134/S002189442402007X
V. M. Fomin, T. A. Brusentseva, S. E. Lukin, A. N. Bagretsova
{"title":"EXPERIMENTAL INVESTIGATION OF THE MECHANICAL CHARACTERISTICS OF PHOTOLUMINESCENT COMPOSITE MATERIALS","authors":"V. M. Fomin,&nbsp;T. A. Brusentseva,&nbsp;S. E. Lukin,&nbsp;A. N. Bagretsova","doi":"10.1134/S002189442402007X","DOIUrl":"10.1134/S002189442402007X","url":null,"abstract":"<p>Crystal 85-5 epoxy resin modified with MHG-4E photoluminescent powder (average particle size 5–15 <span>(mu)</span>m) and FV-530D photoluminescent powders (average particle size 25 <span>(mu)</span>m) photoluminescent powders were studied by mechanical uniaxial tension and three-point bending tests. The dependence of the elastic modulus on filler concentration was obtained. The photoluminescent properties of the resulting composites were examined. The dependence of the afterglow intensity on filler content in the composite was determined.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 2","pages":"257 - 264"},"PeriodicalIF":0.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142906092","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 下一页 尾页
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：481959085
Book学术官方微信