Physical Mesomechanics最新文献_第8页

Nonadiabatically Driven Subcritical Crack Nucleation in Solids 固体中非绝热驱动的亚临界裂纹成核

IF 1.6 4区材料科学

Physical Mesomechanics Pub Date : 2023-08-08 DOI: 10.1134/S1029959923040057

Yu. A. Khon

引用次数: 0

Fracture of 30CrMnSiA Steel under Mixed-Mode Loads 30CrMnSiA钢在混合模式载荷下的断裂

IF 1.6 4区材料科学

Physical Mesomechanics Pub Date : 2023-08-08 DOI: 10.1134/S1029959923040021

L. R. Botvina, E. N. Beletsky, M. R. Tyutin, Yu. A. Demina, I. O. Sinev, A. I. Bolotnikov

{"title":"Fracture of 30CrMnSiA Steel under Mixed-Mode Loads","authors":"L. R. Botvina, E. N. Beletsky, M. R. Tyutin, Yu. A. Demina, I. O. Sinev, A. I. Bolotnikov","doi":"10.1134/S1029959923040021","DOIUrl":"10.1134/S1029959923040021","url":null,"abstract":"Notched 30CrMnSiA steel specimens were exposed to rupture load (mode I) at an angle of 90° between their fracture surface and load direction and to shear load (mode II) at an angle of 45° and 15°. For shear loading, Richard’s grips were used allowing one to vary the load from pure tension to pure shear by varying the notch orientation angle to the tensile load direction. Assessed under loading were the parameters of acoustic emission (AE) and strain fields (by the digital image correlation (DIC) method), and after failure, the damage parameters and microhardness on the polished lateral surface of the specimens, and the macro- and microreliefs of fracture surfaces. It is shown that increasing the shear component under tension changes the mechanical and the acoustic parameters of the specimens (total number of AE signals, their activity, bAE-value), and the critical temperature of brittleness, changing the fracture surface morphology from ductile to brittle at a load orientation of 45°. Simultaneously, a nonlinear dependence of the damage parameters (relative area of microcracks S*, their average length lav, orientation to the loading axis) on the load angle is observed, showing a correlation with principal strains estimated by the DIC method.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"26 4","pages":"391 - 401"},"PeriodicalIF":1.6,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4326414","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

Fatigue and Fracture Behavior of AlSi10Mg Manufactured by Selective Laser Melting: A Review 选择性激光熔化制备AlSi10Mg合金的疲劳与断裂行为研究进展

IF 1.6 4区材料科学

Physical Mesomechanics Pub Date : 2023-08-08 DOI: 10.1134/S102995992304001X

Z. Jiang, J. Sun, F. Berto, X. Wang, G. Qian

引用次数: 1

Mechanical Characterization of Additively Manufactured Orthopedic Cellular Implants: Case Study on Different Cell Types and Effect of Defects 增材制造骨科细胞植入物的力学特性:不同细胞类型和缺陷影响的案例研究

IF 1.6 4区材料科学

Physical Mesomechanics Pub Date : 2023-08-08 DOI: 10.1134/S1029959923040069

N. Rahmat, J. Kadkhodapour, M. Arbabtafti

{"title":"Mechanical Characterization of Additively Manufactured Orthopedic Cellular Implants: Case Study on Different Cell Types and Effect of Defects","authors":"N. Rahmat, J. Kadkhodapour, M. Arbabtafti","doi":"10.1134/S1029959923040069","DOIUrl":"10.1134/S1029959923040069","url":null,"abstract":"A porous structure is widely used in additive manufacturing of orthopedic implants to reduce the stiffness mismatch between the implant and the bone. The development and improvement of porous structures for orthopedic implants is still a major challenge. It is essential to study mechanical properties of different porous structures and their relation to the deformation mechanism. In this paper, the relation between the deformation mechanism and the mechanical properties of Ti6Al4V triply periodic minimal surface (TPMS) structures, such as stretching-dominated IWP and bending-dominated gyroid structures, are investigated using the finite element analysis for uniform and density gradient scaffolds. The method for designing network-based and sheet-based TPMS structures is presented. The numerical results show that failure in the stretching-dominated structure (IWP) starts with buckling of the vertical struts, whereas failure in the bending-dominated structure (gyroid) occurs with the formation of the 45° shear band. The gyroid structure shows a higher shear modulus than the IWP structure. The numerical results exhibit good agreement with the previous experimental data for uniform and density gradient structures. Finally, the effect of the void defect on the elastic and shear moduli is evaluated. The results indicate that the elastic modulus of the bending-dominated structure shows a greater reduction in the presence of void defects than that of the stretching-dominated structure, and the shear modulus of the stretching-dominated structure is more sensitive to void defects than that of the bending-dominated structure.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"26 4","pages":"443 - 458"},"PeriodicalIF":1.6,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4328940","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

Quantitative Characterization of Grain Boundaries in Ultrafine-Grained Austenitic Stainless Steel by Cluster Analysis 用聚类分析定量表征超细晶奥氏体不锈钢的晶界

IF 1.6 4区材料科学

Physical Mesomechanics Pub Date : 2023-08-08 DOI: 10.1134/S1029959923040045

P. V. Kuznetsov, A. V. Stolbovsky, I. V. Belyaeva

{"title":"Quantitative Characterization of Grain Boundaries in Ultrafine-Grained Austenitic Stainless Steel by Cluster Analysis","authors":"P. V. Kuznetsov, A. V. Stolbovsky, I. V. Belyaeva","doi":"10.1134/S1029959923040045","DOIUrl":"10.1134/S1029959923040045","url":null,"abstract":"A method is proposed for analyzing the relative energy distributions of grain boundaries in ultrafine-grained materials measured by grain boundary grooving using a scanning tunneling microscope. The grain boundary energy distribution in a grain boundary ensemble is considered as a superposition of individual distributions or populations, which can be identified by cluster analysis based on statistical criteria and each of which has its own average energy, variance, and share in the total distribution. The analysis is performed for 12Cr15Mn9NiCu steel with a coarse-grained structure in the as-received state and with an ultrafine-grained structure produced by hot helical rolling and subsequent cold rolling. It is shown that the number of boundary populations and their main characteristics revealed by clustering depend on the steel structure. The results of cluster analysis of experimental distributions are compared with the EBSD measurement data on grain boundary misorientation distributions. Discrepancy between the clustering results for the energy and misorientation distributions of grain boundaries is discussed taking into account the difference in the type of information obtained.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"26 4","pages":"415 - 433"},"PeriodicalIF":1.6,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4328174","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

Transformation of a Longitudinal Elastic Wave into a Pochhammer Wave 纵向弹性波向波锤波的转换

IF 1.6 4区材料科学

Physical Mesomechanics Pub Date : 2023-08-08 DOI: 10.1134/S1029959923040094

M. N. Krivosheina, E. V. Tuch

引用次数: 0

Mechanical Simulation Model for Acoustic Damage Monitoring in Polycrystalline Materials 多晶材料声损伤监测的力学仿真模型

IF 1.6 4区材料科学

Physical Mesomechanics Pub Date : 2023-08-08 DOI: 10.1134/S1029959923040070

A. A. Khlybov, A. L. Uglov, D. A. Ryabov

{"title":"Mechanical Simulation Model for Acoustic Damage Monitoring in Polycrystalline Materials","authors":"A. A. Khlybov, A. L. Uglov, D. A. Ryabov","doi":"10.1134/S1029959923040070","DOIUrl":"10.1134/S1029959923040070","url":null,"abstract":"The paper proposes a mechanical simulation model based on continuum damage mechanics and physical mesomechanics to describe the accumulation of dispersed damages in polycrystalline materials, considering that the main damaging factors are dispersed microcracks and internal stresses produced primarily by linear structural defects. From the proposed model follows a statistical limit state criterion consistent with failure conditions for brittle and ductile structural materials. The limit state criterion is applied to several typical cases of failure and elastic-to-elastoplastic strain transition in polycrystalline structural materials. Based on the model, an acoustic approach to damage assessments of structural materials is also proposed. With the approach, several acoustic effects are identified from the propagation of elastic pulses in a damaged material. Such effects can be useful for instrumental damage assessment of materials (specimens, structural elements) at any time of loading or operation. The acoustic approach can provide a basis for a method of measuring the damage parameters included in the model. The experimental data available to us suggest that the proposed approach to damage assessment is correct for structural materials and is promising for further experimental research to develop instrumental express methods of monitoring dispersed damages in metal structures exposed to thermomechanical loads.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"26 4","pages":"459 - 465"},"PeriodicalIF":1.6,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4331115","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

Coupled Poromechanics and Adsorption in Multiple-Porosity Solids 多孔隙度固体的耦合孔隙力学与吸附

IF 1.6 4区材料科学

Physical Mesomechanics Pub Date : 2023-08-08 DOI: 10.1134/S1029959923040033

W. Zhang, A. Mehrabian

引用次数: 0

Effect of Adding Graphene Oxide Nanoplatelets on the Araldite Adhesive Fracture Strength under Mixed-Mode I/II Loading 添加氧化石墨烯纳米片对混合模式I/II加载下Araldite粘结断裂强度的影响

IF 1.6 4区材料科学

Physical Mesomechanics Pub Date : 2023-08-08 DOI: 10.1134/S1029959923040082

Y. Bolghand, T. N. Chakherlou, H. Biglari

引用次数: 0

A Hardening Nonlocal Elasticity Approach to Axial Vibration Analysis of an Arbitrarily Supported FG Nanorod 任意支承FG纳米棒轴向振动分析的硬化非局部弹性方法

IF 1.6 4区材料科学

Physical Mesomechanics Pub Date : 2023-06-30 DOI: 10.1134/S1029959923030050

B. Uzun, Ö. Civalek, M. Ö. Yayli

{"title":"A Hardening Nonlocal Elasticity Approach to Axial Vibration Analysis of an Arbitrarily Supported FG Nanorod","authors":"B. Uzun, Ö. Civalek, M. Ö. Yayli","doi":"10.1134/S1029959923030050","DOIUrl":"10.1134/S1029959923030050","url":null,"abstract":"The present work is aimed at analyzing free longitudinal vibrations of nanorods composed of a functionally graded (FG) material with deformable boundaries within a hardening nonlocal elasticity approach. For this purpose, a FG nanorod composed of the ceramic and metal constituents is considered to be elastically supported by means of axial springs at both ends. Then the analytical method based on the association of the Fourier sine series and the Stokes transformation is developed to solve the free axial vibration problem of a FG nanorod with both deformable and nondeformable boundaries. Free axial vibration of a restrained FG nanorod is first studied within hardening nonlocal elasticity. To show the validity and profitability of the proposed analytical method, the presented Fourier series method with the Stokes transformation is used for the analysis of axial vibration of a rigidly supported homogeneous nanorod by setting the appropriate spring stiffness values. The main superiority of this new approach is in its power of dealing with numerous boundary conditions to determine longitudinal vibration frequencies of FG nanorods. Using the present solution method, various numerical applications are given for different small-scale parameters, gradient index, and nanorod length.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"26 3","pages":"295 - 312"},"PeriodicalIF":1.6,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5151200","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