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
DETERMINATION OF THE EFFECTIVE DYNAMIC YIELD STRENGTH OF HETEROGENEOUS MATERIALS 非均质材料有效动态屈服强度的测定
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030131
A. E. Buzyurkin, A. E. Kraus, E. I. Kraus, I. I. Shabalin
{"title":"DETERMINATION OF THE EFFECTIVE DYNAMIC YIELD STRENGTH OF HETEROGENEOUS MATERIALS","authors":"A. E. Buzyurkin,&nbsp;A. E. Kraus,&nbsp;E. I. Kraus,&nbsp;I. I. Shabalin","doi":"10.1134/S0021894424030131","DOIUrl":"10.1134/S0021894424030131","url":null,"abstract":"<p>A method of determining the dynamic yield strength of heterogeneous materials is proposed, based on comparisons of the processes of cavity formation in the reference and examined materials. A series of computations is performed for penetration of an elongated rod into homogeneous and heterogeneous massive targets. A nonmonotonic dependence of the penetration depth on the motion velocity is derived. The yield strength limit of a heterogeneous medium is obtained from the analysis of computation results in the coordinates of the specific kinetic energy of the rod and the work of stresses on plastic strains.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"519 - 527"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798399","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
VORTEX STRUCTURES IN SUPERSONIC JETS EXHAUSTING INTO A SUBMERGED SPACE 进入水下空间的超音速射流中的旋涡结构
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030052
V. N. Zaikovskii, V. P. Kiselev, S. P. Kiselev, O. V. Belai, G. V. Trubacheev
{"title":"VORTEX STRUCTURES IN SUPERSONIC JETS EXHAUSTING INTO A SUBMERGED SPACE","authors":"V. N. Zaikovskii,&nbsp;V. P. Kiselev,&nbsp;S. P. Kiselev,&nbsp;O. V. Belai,&nbsp;G. V. Trubacheev","doi":"10.1134/S0021894424030052","DOIUrl":"10.1134/S0021894424030052","url":null,"abstract":"<p>Results of studying gas flows in a setup used for cold gas-dynamic spraying are reported. The setup consists of a cylindrical input channel with a central rod connected at a right angle with a rectangular slotted channel. Injection of a high-pressure gas through the input channel leads to gas acceleration. It is shown that there are velocity and pressure disturbances in a supersonic overexpanded jet exhausting from the channel, which arise due to the presence of compression and expansion waves, as well as streamwise vortices. The contribution of streamwise vortices to pressure and velocity disturbances is approximately 30%. Streamwise vortices are formed at the entrance of the slotted channel owing to the curvature of streamlines.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"439 - 450"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798245","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
HEART RATE EFFECT ON BLOOD FLOW HEMODYNAMICS IN A PATIENT WITH A THORACIC AORTIC ANEURYSM: NUMERICAL STUDY 心率对胸主动脉瘤患者血流动力学的影响：数值研究
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030088
A. Faraji, M. Sahebi, S. S. Dezfouli
{"title":"HEART RATE EFFECT ON BLOOD FLOW HEMODYNAMICS IN A PATIENT WITH A THORACIC AORTIC ANEURYSM: NUMERICAL STUDY","authors":"A. Faraji,&nbsp;M. Sahebi,&nbsp;S. S. Dezfouli","doi":"10.1134/S0021894424030088","DOIUrl":"10.1134/S0021894424030088","url":null,"abstract":"<p>In this study, the effect of patient’s physical activity in terms of the heart rate on the growth of the thoracic aortic aneurysm (TAA) is studied. Using medical images of the patient, a patient-specific geometry model is constructed. Then the hemodynamic parameters of the blood flow are numerically analyzed for different heart rate conditions. The simulation results show that the maximum wall shear stress, the maximum velocity, and the maximum pressure during a cardiac cycle increase by 19.1, 12.7, and 50%, respectively, as the heart rate increases from 60 to 174 beats per minute. Results also indicate that an increase in the heart rate leads to reduction of the time-averaged wall shear stress and simultaneously to an increase in the wall shear stress oscillations. According to the literature, these hemodynamic conditions are undesirable and can increase the likelihood of aneurysm development and aortic rupture.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"465 - 475"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798397","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
RESIDUAL WATER SATURATION OF AN OIL RESERVOIR REDUCED USING GBA-F MULTIFUNCTIONAL COMPOSITION 使用gba-f多功能组合物降低油藏残余水饱和度
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030064
V. I. Pen’kovskii, N. K. Korsakova, L. K. Altunina, V. A. Kuvshinov
{"title":"RESIDUAL WATER SATURATION OF AN OIL RESERVOIR REDUCED USING GBA-F MULTIFUNCTIONAL COMPOSITION","authors":"V. I. Pen’kovskii,&nbsp;N. K. Korsakova,&nbsp;L. K. Altunina,&nbsp;V. A. Kuvshinov","doi":"10.1134/S0021894424030064","DOIUrl":"10.1134/S0021894424030064","url":null,"abstract":"<p>This paper describes the study of a method for controlling the physical and chemical properties of an oil reservoir in order to increase its oil recovery by injecting a GBA-F acid composition into the reservoir. An experimental testbed is developed to physically simulate the effect of the acid composition on the oil reservoir. Experiments are carried out using the flat model with a single injection of the reagent into the central wellbore. Experimental results confirm the effectiveness of the acid composition.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"451 - 455"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798247","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
ALGORITHM FOR 3D QUANTIFICATION OF ABDOMINAL AORTIC SHAGGINESS BASED ON LUMEN MORPHOLOGY ANALYSIS USING CTA IMAGES 基于cta图像腔腔形态学分析的腹主动脉粗蓬松度三维量化算法
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030192
Ya. V. Fedotova, E. V. Amelina, R. I. Mullyadzhanov, A. A. Karpenko
{"title":"ALGORITHM FOR 3D QUANTIFICATION OF ABDOMINAL AORTIC SHAGGINESS BASED ON LUMEN MORPHOLOGY ANALYSIS USING CTA IMAGES","authors":"Ya. V. Fedotova,&nbsp;E. V. Amelina,&nbsp;R. I. Mullyadzhanov,&nbsp;A. A. Karpenko","doi":"10.1134/S0021894424030192","DOIUrl":"10.1134/S0021894424030192","url":null,"abstract":"<p>A method is proposed for three-dimensional quantification of the shagginess of a pathologically altered aorta with account for a three-dimensional lumen morphology. An algorithm for assessing local shagginess is developed and implemented, and an integral criterion for shagginess in the anatomical region is proposed. The algorithm is tested on data from two patients with a shaggy and a smooth lumen. The results obtained in this study are in good agreement with visual assessment performed by expert surgeons and are also confirmed by clinical outcomes during surgery.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"573 - 581"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798404","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
SPECIFIC FEATURES OF FLAME FORMATION IN A COLLISION OF TWO HYDROGEN JETS 两个氢射流碰撞时火焰形成的具体特征
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030015
A. S. Tambovtsev, V. V. Kozlov, Yu. A. Litvinenko, M. V. Litvinenko, A. G. Shmakov
{"title":"SPECIFIC FEATURES OF FLAME FORMATION IN A COLLISION OF TWO HYDROGEN JETS","authors":"A. S. Tambovtsev,&nbsp;V. V. Kozlov,&nbsp;Yu. A. Litvinenko,&nbsp;M. V. Litvinenko,&nbsp;A. G. Shmakov","doi":"10.1134/S0021894424030015","DOIUrl":"10.1134/S0021894424030015","url":null,"abstract":"<p>Results of studying interaction of two colliding axisymmetric laminar microjets of hydrogen in the course of their diffusion combustion are reported. Gas exhaustion occurs with identical velocities through pairs of micronozzles, which are thin-walled cylindrical tubes with an inner diameter of 200 <span>(mu)</span>m. The transverse positions of the tubes with respect to each other are changed during the experiment. Specific features of flame formation from two interacting microjets are found for different transverse positions of the tubes, and the results are compared with flames of single microjets with the same exhaustion velocity.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"393 - 400"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798243","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 MOLDING PRESSURE ON CHARACTERISTICS OF RADIOPROTECTIVE COMPOSITES 成型压力对辐射防护复合材料性能的影响
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030106
V. I. Pavlenko, D. S. Romanyuk, V. V. Kashibadze, O. V. Kuprieva
{"title":"EFFECT OF MOLDING PRESSURE ON CHARACTERISTICS OF RADIOPROTECTIVE COMPOSITES","authors":"V. I. Pavlenko,&nbsp;D. S. Romanyuk,&nbsp;V. V. Kashibadze,&nbsp;O. V. Kuprieva","doi":"10.1134/S0021894424030106","DOIUrl":"10.1134/S0021894424030106","url":null,"abstract":"<p>This paper presents the results of a study of the effect of molding pressure on the characteristics of radioprotective composites based on polyethylene and boron carbide (B<sub>4</sub>C). Software simulation is applied to select a temperature range for heating a press mold of a given size. Experiments are performed to determine the required holding time of the composite and identify defects arising from various deviations from the optimal temperature parameters. The strength of samples under various molding pressure conditions is tested, and the optimal pressure is determined. A composite with the following mechanical characteristics under optimal molding conditions is obtained: density (<span>(1.09 pm 0.01)</span>) g/cm<sup>3</sup>, bending strength <span>((5.72 pm 0.18))</span> MPa, and sound velocity in the composite (<span>(2050.00pm 0.01)</span>) m/s.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"488 - 495"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798396","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 INVESTIGATION ON CHARACTERISTICS OF THE SHOCK WAVE GENERATED BY AN ANNULAR NESTED CHARGE 环形嵌套装药产生激波特性的数值研究
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030027
Jun-bao Li, Wei-bing Li, Xiao-ming Wang
{"title":"NUMERICAL INVESTIGATION ON CHARACTERISTICS OF THE SHOCK WAVE GENERATED BY AN ANNULAR NESTED CHARGE","authors":"Jun-bao Li,&nbsp;Wei-bing Li,&nbsp;Xiao-ming Wang","doi":"10.1134/S0021894424030027","DOIUrl":"10.1134/S0021894424030027","url":null,"abstract":"<p>This study is aimed at understanding some characteristics of the shock wave generated by a novel composite charge consisting of an inner high explosive, a medium non-detonating layer, and an outer aluminized explosive. The influence of the shell restraints and initiation modes on the peak overpressure and impulse of the charge is investigated. Numerical models are developed based on the mapping function of AUTODYN for determining the spatial distribution of the shock wave overpressure. By means of validation experiments, the accuracy of the developed model is verified. It is found that the peak overpressure and impulse obtained from experiments and simulations are in good agreement, with a deviation of less than 16.9%. The difference in the overpressures at various azimuths decreases with increasing distance, and the shock wave profile eventually evolves into a spherical shape. The radial overpressure of the shelled composite charge is initially greater than that in the axial direction and decays rapidly with increasing distance. The azimuth corresponding to the maximum peak overpressure is shifted from 75° for the bare charge to 110° for the shelled charge. It is found that the energy utilization of the composite charge under inner initiation is apparently smaller than that under simultaneous initiation.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"401 - 413"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798244","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
COMPUTATIONAL ALGORITHM FOR STUDYING THE CONSTITUTIVE RELATIONS OF THE ENDOCHRONIC THEORY OF THERMOPLASTICITY FOR ISOTROPIC MATERIALS 研究各向同性材料热塑性内时理论本构关系的计算算法
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030118
G. N. Kuvyrkin, D. R. Rakhimov
{"title":"COMPUTATIONAL ALGORITHM FOR STUDYING THE CONSTITUTIVE RELATIONS OF THE ENDOCHRONIC THEORY OF THERMOPLASTICITY FOR ISOTROPIC MATERIALS","authors":"G. N. Kuvyrkin,&nbsp;D. R. Rakhimov","doi":"10.1134/S0021894424030118","DOIUrl":"10.1134/S0021894424030118","url":null,"abstract":"<p>It is proposed to use the relations of the endochronic theory of thermoplasticity to describe the nonlinear deformation of isotropic materials under non-isothermal loading. A version of the constitutive relations in integral and differential form is given for the general loading case. Based on the results of uniaxial tension (torsion) tests, analytical relations are determined for a number of material parameters of the model. A numerical algorithm based on the Euler method with inner iteration carried out by the Seidel method is proposed to analyze the constitutive relations. An example of numerical calculation of the uniaxial tension of a rod under complex thermal force loading. It is shown that the calculation results are in satisfactory agreement with the results obtained using the flow theory of plasticity with isotropic hardening.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"496 - 501"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798392","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
MECHANICAL PROPERTIES OF SALMONELLA TYPHIMURIUM AND LISTERIA MONOCYTOGENES BACTERIA 鼠伤寒沙门菌和单核增生李斯特菌的力学特性
IF 0.5 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2024-12-09 DOI: 10.1134/S0021894424030209
I. Rezaei, A. Sadeghi
{"title":"MECHANICAL PROPERTIES OF SALMONELLA TYPHIMURIUM AND LISTERIA MONOCYTOGENES BACTERIA","authors":"I. Rezaei,&nbsp;A. Sadeghi","doi":"10.1134/S0021894424030209","DOIUrl":"10.1134/S0021894424030209","url":null,"abstract":"<p>\u0000\t\t\t\t\t<i>Salmonella typhimurium</i> and <i>Listeria monocytogenes</i> bacteria, which are two important bacteria used for bacterial therapy purposes in order to limit tumor growth, are studied. Mechanical specifications of the bacteria obtained applying nanoindentation with the use of atomic force microscopy (AFM) are reported. The results show that <i>Salmonella typhimurium</i> bacteria have a greater elastic modulus, but smaller adhesion than <i>Listeria monocytogenes</i> bacteria. The elastic modulus of the AFM extension stroke is larger than that of the retraction stroke. The resonant frequencies and amplitudes of the frequency response function of the AFM beam’s vertical movements with two bacteria as samples are investigated using the finite element method. The results show that an increase in the elastic modulus of the sample raises the resonant frequency; therefore, the resonant frequency of <i>Salmonella typhimurium</i> bacteria is greater than that of <i>Listeria monocytogenes</i> bacteria. The results obtained by the finite element method and experimental techniques are found to be in good agreement.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"65 3","pages":"582 - 593"},"PeriodicalIF":0.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798394","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