Physical Mesomechanics最新文献_第4页

Tension and Compression Fatigue Properties of Short Glass Fiber-Reinforced Polyphthalamide Composite 短玻璃纤维增强聚苯二胺复合材料的拉伸和压缩疲劳性能

IF 2 4区材料科学

Physical Mesomechanics Pub Date : 2025-12-26 DOI: 10.1134/S1029959925600193

A. A. Bogdanov, S. V. Panin, D. G. Buslovich

引用次数: 0

Deformation and Fracture of Ti-6Al-4V/TiC Composites 3D Printed using Wire-Feed Electron Beam Additive Manufacturing under Uniaxial Tensile Stress 单轴拉伸应力下3D打印Ti-6Al-4V/TiC复合材料的变形与断裂

IF 2 4区材料科学

Physical Mesomechanics Pub Date : 2025-12-26 DOI: 10.1134/S1029959925600272

A. V. Panin, M. S. Kazachenok, А. R. Shugurov, G. M. Eremina, А. Yu. Smolin

{"title":"Deformation and Fracture of Ti-6Al-4V/TiC Composites 3D Printed using Wire-Feed Electron Beam Additive Manufacturing under Uniaxial Tensile Stress","authors":"A. V. Panin, M. S. Kazachenok, А. R. Shugurov, G. M. Eremina, А. Yu. Smolin","doi":"10.1134/S1029959925600272","DOIUrl":"10.1134/S1029959925600272","url":null,"abstract":"The deformation and fracture patterns of Ti–6Al–4V/TiC composites 3D printed by wire-feed electron beam additive manufacturing using Ti–6Al–4V wire pre-electrospark alloyed with carbide-containing electrodes or by simultaneous melting of titanium wire and TiC powder are investigated. It is shown that Ti–6Al–4V/TiC composites obtained by both methods are characterized by the same microstructure and volume fraction of the carbide phase (~2%) but different sizes of TiC inclusions. It is found that the ductility of the Ti–6Al–4V/TiC composite obtained by electrospark alloying of the wire and containing TiC inclusions with a diameter of ~1 μm is significantly higher than that of the specimen 3D printed by simultaneous melting of titanium wire and TiC powder, in which the inclusion sizes vary within 15–30 μm. Different fracture characteristics of the investigated Ti–6Al–4V/TiC composites under uniaxial tensile stress were revealed. Three-dimensional modeling of elastic-plastic deformation and fracture of model Ti/TiC composites under mechanical loading is carried out using the method of movable cellular automata. The influence of the size and hardness of TiC particles, as well as the character of their distribution in the titanium matrix, on the regularities of crack initiation and propagation in the model composite is demonstrated. It is shown that the inhomogeneous distribution of large carbide inclusions in the titanium matrix is a key factor for crack initiation and propagation in the model composites.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"28 6","pages":"819 - 834"},"PeriodicalIF":2.0,"publicationDate":"2025-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145831365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vibration of a Sandwich Plate with FG Porous and Auxetic Cores and Piezo-Electro-Magnetic Face Sheets FG多孔、辅助芯与压电电磁片夹层板的振动研究

IF 2 4区材料科学

Physical Mesomechanics Pub Date : 2025-12-26 DOI: 10.1134/S1029959924601933

P. Nikbakhsh, M. Mohammadimehr, F. Bargozini

{"title":"Vibration of a Sandwich Plate with FG Porous and Auxetic Cores and Piezo-Electro-Magnetic Face Sheets","authors":"P. Nikbakhsh, M. Mohammadimehr, F. Bargozini","doi":"10.1134/S1029959924601933","DOIUrl":"10.1134/S1029959924601933","url":null,"abstract":"The progress of various industries, especially the transportation industry, depends on the materials and structures required by these industries. With the emergence of metamaterials, one of the challenges for researchers is to investigate the effect of these materials on various structures. This research investigates the vibration behavior of a sandwich plate with piezo-electro-magnetic face sheets and the effect of several core models (three types of porous and two types of auxetic cores). The equations of motion for the sandwich plate are determined. These equations are solved using a semi-analytical method, and the vibration of the sandwich plate is obtained. The effects of porosity distribution, electric and magnetic fields, different parameters of the auxetic core, and thickness ratio on the natural frequency are determined. The results show that the effect of the 3rd type of porous distribution on the structure frequency is more than that of other porous distributions. The effect of auxetic cores with negative Poisson’s ratios was also analyzed. The second type of the auxetic core has a more significant effect on the frequency. The findings of this study have practical applications in the aerospace sector and can be used in developing lightweight structures, sensors, and actuators.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"28 6","pages":"851 - 869"},"PeriodicalIF":2.0,"publicationDate":"2025-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145831362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","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 Residual Stress Effect on Contact Fatigue Fracture of Elastic Solids under Sliding/Rolling Friction 滑动/滚动摩擦下残余应力对弹性固体接触疲劳断裂影响的建模

IF 2 4区材料科学

Physical Mesomechanics Pub Date : 2025-12-26 DOI: 10.1134/S1029959925600338

I. G. Goryacheva, A. A. Yakovenko, E. A. Gachegova, I. A. Panteleev

{"title":"Modeling the Residual Stress Effect on Contact Fatigue Fracture of Elastic Solids under Sliding/Rolling Friction","authors":"I. G. Goryacheva, A. A. Yakovenko, E. A. Gachegova, I. A. Panteleev","doi":"10.1134/S1029959925600338","DOIUrl":"10.1134/S1029959925600338","url":null,"abstract":"The effect of residual stresses on surface and subsurface fatigue fracture under rolling and sliding friction is studied by analyzing internal stresses during rolling and sliding of an elastic cylinder against an elastic half-plane with residual stresses in the subsurface. The macroscopic approach is used to calculate the accumulated contact fatigue damage for different types of residual stress distribution in the subsurface layer and for various contact conditions (friction coefficient, relative slip, etc.). Compressive and tensile residual stresses, which are either constant across the subsurface layer of a given thickness or decrease linearly to zero in it, are considered. It is shown that compressive residual stresses cause a decrease in the equivalent stress amplitude in the subsurface of the half-plane under both sliding and rolling friction. They also decrease the rate of fatigue damage accumulation in the subsurface layers of the friction pair. The obtained results can be used to develop methods for controlling the contact fatigue fracture in the subsurface layers of the friction pair under rolling and sliding friction by inducing the appropriate residual stresses in the interacting materials.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"28 6","pages":"776 - 791"},"PeriodicalIF":2.0,"publicationDate":"2025-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145831364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Degradation Features of Ion-Plasma Nitride Coatings under Sliding Friction 离子等离子体氮化涂层在滑动摩擦下的降解特性

IF 2 4区材料科学

Physical Mesomechanics Pub Date : 2025-10-17 DOI: 10.1134/S1029959924601209

O. V. Kudryakov, V. I. Kolesnikov, I. V. Kolesnikov, D. S. Manturov

{"title":"Degradation Features of Ion-Plasma Nitride Coatings under Sliding Friction","authors":"O. V. Kudryakov, V. I. Kolesnikov, I. V. Kolesnikov, D. S. Manturov","doi":"10.1134/S1029959924601209","DOIUrl":"10.1134/S1029959924601209","url":null,"abstract":"The paper studies nitride coatings of the TiAlN and CrAlSiN systems with a thickness of 0.8…4.0 μm deposited by the vacuum ion-plasma technology. Specimens of nitrided 38Cr2MoAl and cemented 12Cr2Ni4 steels were used as substrates for coating deposition. Experimental data are derived on the physical and mechanical properties of the coatings by various indentation methods, including scratch tests, as well as on their tribological properties in sliding friction tests. The results of microstructural (SEM) and energy-dispersive X-ray (EDX) analysis of the coatings are also presented, including electron microscopic data on coating wear in tribological tests. It is shown that none of the physical and mechanical characteristics (hardness H, elastic modulus E, and their ratios H/E, H3/E2) determined by continuous or dynamic (for example, critical load FcN for coating spallation in scratch tests) indentation can separately describe the coating resistance to wear under the test conditions. This is the methodological problem that does not allow an accurate prediction of the coating wear. The problem is solved by the joint use of the calculated specific work of coating spallation from the substrate G and the coating resistance to plastic deformation H3/E2, which together determine not only the coating degradation process, but also the loss of stability of the entire coating–substrate system.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"28 5","pages":"584 - 593"},"PeriodicalIF":2.0,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","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 Grain Boundary Segregations of Mg Atoms on Mechanical Properties of Ultrafine-Grained Al-Mg-Zr Alloy Mg原子晶界偏析对Al-Mg-Zr超细晶合金力学性能的影响

IF 2 4区材料科学

Physical Mesomechanics Pub Date : 2025-10-17 DOI: 10.1134/S1029959924601817

N. V. Skiba, M. Yu. Gutkin, T. S. Orlova

{"title":"Effect of Grain Boundary Segregations of Mg Atoms on Mechanical Properties of Ultrafine-Grained Al-Mg-Zr Alloy","authors":"N. V. Skiba, M. Yu. Gutkin, T. S. Orlova","doi":"10.1134/S1029959924601817","DOIUrl":"10.1134/S1029959924601817","url":null,"abstract":"A theoretical model is proposed to describe the micromechanism of plastic deformation in an ultrafine-grained Al-Mg-Zr alloy structured by high-pressure torsion (HPT) with grain boundary segregations of Mg atoms formed during HPT. In the model, plastic deformation is realized due to the emission of lattice dislocations from triple junctions of grain boundaries (GBs), which contain arrays of extrinsic grain boundary dislocations that are pinned by Mg atoms segregated at GBs. These segregations act as obstacles to gliding of extrinsic grain boundary dislocations, thus hindering the formation of dislocation pile-ups near the triple GB junctions and reducing the stress concentration at them, which leads to significant strengthening of the alloy. This model is used to calculate the yield strength of the ultrafine-grained Al-Mg-Zr alloy after HPT and after additional thermomechanical treatment consisting of low-temperature annealing and slight deformation by HPT. An increase in the alloy plasticity due to such thermomechanical treatment is discussed. The proposed model agrees well with the available experimental data.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"28 5","pages":"652 - 661"},"PeriodicalIF":2.0,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Features of the Structure and Properties of an Equiatomic Cu-Au Alloy Ordered in the External Force Field 等原子Cu-Au合金在外力场中有序的结构和性能特征

IF 2 4区材料科学

Physical Mesomechanics Pub Date : 2025-10-17 DOI: 10.1134/S1029959924601763

A. Yu. Volkov, P. O. Podgorbunskaya, A. M. Patselov, V. A. Kazantsev, O. S. Novikova, A. A. Gavrilova

{"title":"Features of the Structure and Properties of an Equiatomic Cu-Au Alloy Ordered in the External Force Field","authors":"A. Yu. Volkov, P. O. Podgorbunskaya, A. M. Patselov, V. A. Kazantsev, O. S. Novikova, A. A. Gavrilova","doi":"10.1134/S1029959924601763","DOIUrl":"10.1134/S1029959924601763","url":null,"abstract":"Atomically ordered gold-copper alloys have technological applications, which makes the search for ways to improve their mechanical properties an urgent scientific and practical task. The present paper studies the effect of tensile and compressive stresses on the formation of an ordered structure, texture, and physicomechanical properties of an equiatomic CuAu alloy. All experiments were carried out on Ø1.5 mm wire specimens, which were initially disordered by quenching from 600°C or plastic deformation by 75%. An ordered structure was formed at a temperature of 350°C for 24 h; compressive stresses during annealing were 7 and 11 MPa; tensile stresses were 7 and 20 MPa. Comparison was made with the specimens ordered in a free state. It is shown that annealing in the compressive stress field causes a significant part of the short c axes of the ordered lattice to align along the force direction. Annealing under tension forms a different texture, i.e. most of the short c axes lie in the cross section of the specimen. The estimation of the degree of long-range order (S) showed that the specimens annealed in a free state had the maximum atomic order (S ≈ 0.95). According to the dilatometric study, the specimen quenched and then ordered in the compressive stress field demonstrates a sharp (by ~0.7%) increase in the length at the temperature of order → disorder phase transformation. It is found that compressive loads during ordering of the quenched specimens increase their strength and ductility, while tensile loads decrease these characteristics. It is shown that the mechanical properties of the specimens ordered after preliminary deformation are almost independent of the load direction. This phenomenon is explained by the absence of a clear texture (small loads do not cause rotation of c domains during ordering of high-strength deformed specimens).","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"28 5","pages":"613 - 625"},"PeriodicalIF":2.0,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improved Atom Search Optimization (ASO) for Crack Length Prediction in Steel Beams 改进原子搜索优化（ASO）用于钢梁裂纹长度预测

IF 2 4区材料科学

Physical Mesomechanics Pub Date : 2025-10-17 DOI: 10.1134/S102995992460188X

Hoang-Le Minh, Thanh Sang-To, Binh Le-Van, Samir Khatir, Thanh Cuong-Le

{"title":"Improved Atom Search Optimization (ASO) for Crack Length Prediction in Steel Beams","authors":"Hoang-Le Minh, Thanh Sang-To, Binh Le-Van, Samir Khatir, Thanh Cuong-Le","doi":"10.1134/S102995992460188X","DOIUrl":"10.1134/S102995992460188X","url":null,"abstract":"This paper presents a new method for accurately determining the crack length in damaged steel beam structures. The proposed method combines the geometric updating technique of the finite element model (FEM) with a new variant of atom search optimization (ASO) called Lévy–ASO. The key feature of the Lévy–ASO algorithm is that it generates random step lengths determined by the Lévy distribution. Based on these step lengths, Lévy–ASO can achieve wider movements to expand the search space or narrower movements to exploit the potential search spaces, which is close the global optimum. It leads to a new search strategy within the ASO algorithm, effectively improving its ability to find the global optimum solution and escape the local optimum. To compare the effectiveness of Lévy–ASO with the original ASO, 23 classical benchmark functions are used as the first example. The comparison results show the superiority of Lévy–ASO over the original ASO in both accuracy and convergence rate. Then, a series of experiments were conducted on damaged steel beams with the crack lengths of 2 mm, 4 mm, 8 mm, and 10 mm to demonstrate the effectiveness and reliability of Lévy–ASO in determining the crack length of steel beams. Based on the vibration frequencies measured in these experiments and obtained from the finite element (FE) model, an objective function is established. The process of finding the crack length is carried out using the Lévy–ASO algorithm to optimize the objective function, which is established based on the analysis of the FEM where the geometric coordinates of the crack length are adjusted. This study proves the effectiveness of the proposed method, and the Lévy–ASO algorithm is recognized as a promising optimization algorithm for solving various engineering optimization problems.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"28 5","pages":"686 - 712"},"PeriodicalIF":2.0,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hyperelastic Shear Lag Model 超弹性剪切滞后模型

IF 2 4区材料科学

Physical Mesomechanics Pub Date : 2025-10-17 DOI: 10.1134/S1029959924601830

G. M. Sevastyanov, A. A. Burenin

{"title":"Hyperelastic Shear Lag Model","authors":"G. M. Sevastyanov, A. A. Burenin","doi":"10.1134/S1029959924601830","DOIUrl":"10.1134/S1029959924601830","url":null,"abstract":"On the basis of the analysis of deformation of a representative volume element, a micromechanical model is derived to describe the elastic modulus of a unidirectional short-fiber composite under tension in the reinforcement direction. The analysis includes an exact solution to the hyperelastic equations for the deformed matrix and an approximate solution to the equations for the fiber material. The solution is provided for a neo-Hookean material. Formulas are derived to relate the elastic strain energy to the macroscopic longitudinal strain of the composite and to describe the longitudinal and radial deformation of the matrix and fiber material. The main result is a formula that relates the initial tangential elastic modulus of the composite (an analog of Young's modulus in linear elasticity) to the mechanical characteristics of the composite constituents (namely, the ratio of the elastic modulus of the matrix material to the elastic modulus of the fiber), as well as to the geometric characteristic (fiber length-to-diameter ratio) and volume fraction of fibers in the composite. The derived results are compared with other analytical models, as well as with the known results of finite element and boundary element modeling. The results generalize the well-known shear lag (SL) model to hyperelastic materials and are obtained via a more rigorous analysis than the original model.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"28 5","pages":"662 - 674"},"PeriodicalIF":2.0,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","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 Cooling Rate on the Microstructure of a Quasi-Binary Al-Cu-Gd Alloy in the As-Cast and Homogenized States 冷却速率对铸态和均质态准二元Al-Cu-Gd合金组织的影响

IF 2 4区材料科学

Physical Mesomechanics Pub Date : 2025-10-17 DOI: 10.1134/S1029959924601738

D. P. Korepina, M. V. Glavatskikh, R. Yu. Barkov, A. V. Pozdniakov

{"title":"Effect of the Cooling Rate on the Microstructure of a Quasi-Binary Al-Cu-Gd Alloy in the As-Cast and Homogenized States","authors":"D. P. Korepina, M. V. Glavatskikh, R. Yu. Barkov, A. V. Pozdniakov","doi":"10.1134/S1029959924601738","DOIUrl":"10.1134/S1029959924601738","url":null,"abstract":"The paper studies the effect of the cooling rate during solidification on the microstructure of the quasi-binary Al-6Cu-3Gd alloy after casting and homogenization. Different cooling rates are implemented by laser surface melting (LSM), solidification in a cold or heated mold and with a furnace. It is shown that an increase in the cooling rate from 0.02 K/s to 105–107 K/s leads to a significant refinement of dendritic cells from 126 to 0.5 μm and intermetallic phases from 0.24 μm to 0.05–0.1 μm, which improves the hardness of ingots from 25 to 75 HV. The dependence of the dendritic cell size is accurately described by an empirical equation obtained for hypoeutectic silumin. The microstructure contains dispersed eutectic (Al) + Al8Cu4Gd (τ1) and individual inclusions of the (Al, Cu)17Gd2 (τ4) phase, which demonstrate high thermal stability during homogenization at 590 °C. The microstructure after LSM contains a network of larger particles about 1 μm in size, while the main proportion of 0.1–0.2 μm particles is uniformly distributed throughout the volume. In the alloys obtained at the intermediate cooling rates 1–15 K/s, which are close to industrial ones, the processes of fragmentation and spheroidization occur almost identically: the particle size changes from 0.1–0.2 μm in the as-cast state to 0.5–3 μm after 1–24 h of homogenization. In the alloy cooled at the minimum rate of 0.02 K/s, the particle morphology remains almost unchanged.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"28 5","pages":"594 - 603"},"PeriodicalIF":2.0,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145316333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0