Mechanics of Solids最新文献_第2页

A Fast Algorithm for Axisymmetric Consolidation of Unsaturated Soil Considering Permeable and Impermeable Columns 考虑透水和不透水柱的非饱和土轴对称固结快速算法

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-10-06 DOI: 10.1134/S0025654426601102

Qian He, Longqi Li, Quan Yuan, Tao Li, Canghao Dong

引用次数: 0

Experimental Progress on Cold-Formed Thin-Walled Channels under Compression and Flexure Since 2000 2000年以来冷弯薄壁孔道压缩弯曲试验进展

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-10-06 DOI: 10.1134/S0025654426602831

Wenhui Liu, Laifu Zhang, Yong Cai

{"title":"Experimental Progress on Cold-Formed Thin-Walled Channels under Compression and Flexure Since 2000","authors":"Wenhui Liu, Laifu Zhang, Yong Cai","doi":"10.1134/S0025654426602831","DOIUrl":"10.1134/S0025654426602831","url":null,"abstract":"Cold-formed thin-walled channel steel, featuring light weight, high strength, cost-effectiveness and easy construction, is widely used in purlins, keels, columns and other structural members. Its compressive and flexural mechanical properties directly determine structural safety and reliability. This paper systematically reviews the research progress of experimental studies on compression test and flexural test of cold-formed thin-walled channel steel members at home and abroad since 2000, focusing on failure modes, key influencing factors, design method optimization and code updates. Results show that the failure modes of compression members are closely related to slenderness ratios and eccentricities, mainly including local buckling, flexural-torsional buckling and overall instability. The performance of flexural members is significantly affected by web openings, stiffeners and other structural parameters. Experimental and numerical simulation has become the mainstream research method. Combined with the 2025-implemented code GB/T 50018-2025, this paper summarizes the engineering application value of existing research, points out research gaps involving complex hole shapes and extreme environmental coupling effects, and provides references for future experiments and engineering design.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"61 4","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098234","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 Analysis of Heat Treatment Effects on Microstructure, Mechanical Properties, and Fracture Behavior of NiCr20TiAl Alloy 热处理对NiCr20TiAl合金组织、力学性能及断裂行为影响的实验分析

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-10-06 DOI: 10.1134/S0025654426602065

Neeraj Pandey, Bijendra Kumar Dewangan, Mahesh Kumar Gupta, Vikas Goyat, Santosh Kumar Rai

{"title":"Experimental Analysis of Heat Treatment Effects on Microstructure, Mechanical Properties, and Fracture Behavior of NiCr20TiAl Alloy","authors":"Neeraj Pandey, Bijendra Kumar Dewangan, Mahesh Kumar Gupta, Vikas Goyat, Santosh Kumar Rai","doi":"10.1134/S0025654426602065","DOIUrl":"10.1134/S0025654426602065","url":null,"abstract":"NiCr20TiAl is a nickel based superalloy widely used in high temperature applications such as engine valves and turbine blades, where resistance to chemical attack and thermal degradation is critical. This study presents an experimental investigation into the relationship between heat treatment, microstructure, mechanical properties and fracture behavior of NiCr20TiAl. Samples were subjected to various heat treatment regimes, followed by microstructural characterization using optical microscopy, hardness and tensile testing at both room and elevated temperatures. Fractographic analysis was conducted using Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) to identify fracture mechanisms and the role of precipitates in fracture initiation. Results show that fine grains with annealing twins were observed up to a solution annealing temperature of 1080°C, beyond which grain coarsening occurred. Aging promoted significant precipitation along grain boundaries with negligible grain growth. The optimal mechanical properties were observed for the T4 (1040°C solution annealed) and T11conditions, with T11 (1040°C solution annealed and aged) exhibiting the highest tensile strength (1283 MPa) and hardness (368 HV), albeit with slightly reduced ductility. Hardness improved by aging around 80%, with a maximum value observed for T11 as 368 HV. At elevated temperatures, aged samples maintained superior properties up to 700°C, beyond which performance declined. The optimized heat treatment of 1040°C solution annealing and aging at 700°C proved most suitable for high temperature applications below 700°C.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"61 4","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098293","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

Magnetic Field and Nonlocal Effects on Wave Reflection in a Generalized Magneto-Micropolar Thermoelastic Medium 广义磁微极热弹性介质中磁场和非局域效应对波反射的影响

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-10-06 DOI: 10.1134/S0025654426601709

Doaa. M. Salah, A. M. Abd-Alla, F. S. Bayones

引用次数: 0

Dispersion and Attenuation Characteristics of Flexural Wave Propagation in Double Porosity Thermoelastic Kirchhoff Plates 双孔热弹性基尔霍夫板中弯曲波传播的频散和衰减特性

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-10-06 DOI: 10.1134/S0025654426601965

Yunnuo Wang, Yueqiu Li, Chuanping Zhou

{"title":"Dispersion and Attenuation Characteristics of Flexural Wave Propagation in Double Porosity Thermoelastic Kirchhoff Plates","authors":"Yunnuo Wang, Yueqiu Li, Chuanping Zhou","doi":"10.1134/S0025654426601965","DOIUrl":"10.1134/S0025654426601965","url":null,"abstract":"This study investigates the effects of double porosity structure and thermoelastic coupling on wave propagation in plate structures. A Kirchhoff thin‑plate model incorporating double porosity and thermoelasticity is developed for flexural wave analysis. By introducing two pore‑volume‑fraction fields and a temperature field, the governing equations are derived to account for the multi‑field coupling among thermal, elastic, and double porosity responses. Using harmonic wave solutions, a characteristic equation describing the frequency‑dependent dispersion of flexural waves is obtained, which takes the form of a tenth‑degree polynomial in the complex wavenumber, thereby elucidating the mechanisms of wave dispersion and attenuation. Theoretical analysis demonstrates that, compared with classical elastic plates and single‑phase thermoelastic plates, the multi‑field coupling in double porosity thermoelastic plates excites a greater number of wave modes. Five distinct modes are identified: the first is a macropore‑dominated pore wave; the second is a micropore‑dominated pore wave. Both pore‑wave modes exhibit cut‑off frequencies beyond which pronounced dispersion occurs. The third mode is a thermally coupled wave, whose dispersion and attenuation are comparable and intensify simultaneously with increasing frequency. The remaining two modes correspond to a coupled flexural traveling wave and a flexural standing wave. Although their variation trends generally align with those in classical thin plates, their phase speeds are lower than the classical predictions due to the combined effects of porosity and thermoelastic coupling. This work provides a theoretical basis for understanding wave propagation in porous thermoelastic plate‑like structures.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"61 4","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098386","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

Comparative Study of Mechanical and Microstructural Properties of AA6082-T6 Joints Produced by FSW and Underwater FSW FSW与水下FSW焊接AA6082-T6接头力学与组织性能对比研究

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-10-06 DOI: 10.1134/S0025654426602193

Yahia Omar, Cherief Mohammed Nadhir Djamel Eddine, Blaoui Mohammed Mousaab, Ait Ferhat Yazid, Miloudi Abdelkader, Ghermaoui Ilias Mohammed amine, Moustafa Debbab

{"title":"Comparative Study of Mechanical and Microstructural Properties of AA6082-T6 Joints Produced by FSW and Underwater FSW","authors":"Yahia Omar, Cherief Mohammed Nadhir Djamel Eddine, Blaoui Mohammed Mousaab, Ait Ferhat Yazid, Miloudi Abdelkader, Ghermaoui Ilias Mohammed amine, Moustafa Debbab","doi":"10.1134/S0025654426602193","DOIUrl":"10.1134/S0025654426602193","url":null,"abstract":"This study compares conventional Friction Stir Welding (FSW) and Underwater Friction Stir Welding (UWFSW) applied to AA6082-T6 aluminum alloy plates. The welds were produced at a constant traverse speed of 80 mm/min. For conventional FSW in air, the tool rotational speed was fixed at 1500 rpm, while underwater welding was performed at 1200, 1500, and 1800 rpm in order to evaluate the influence of rotational speed under enhanced cooling conditions. The welded joints were examined by scanning electron microscopy, Vickers microhardness measurements, tensile testing, and Charpy impact testing. The results indicate that the underwater environment modifies the thermal cycle by increasing heat extraction during welding, which limits excessive grain growth and promotes a finer and more homogeneous microstructure in the weld region. This microstructural refinement is associated with improved hardness distribution and enhanced mechanical behavior compared with the joint welded in air. Among the investigated conditions, UWFSW at 1500 rpm provided the best balance between material flow and heat input, leading to the highest tensile strength, improved joint efficiency, and higher absorbed impact energy. In contrast, the lower rotational speed produced less uniform mixing, whereas the higher rotational speed promoted additional heat input and slight grain coarsening. Overall, the findings demonstrate that underwater cooling can be used as an effective process modification to improve the microstructure-property relationship of friction stir welded AA6082-T6 joints.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"61 4","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098236","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

Evolutionary Equations of Rotational Motion of a Dynamically Symmetric Satellite with a Ball Damper in a Circular Orbit 含球阻尼器的动态对称卫星在圆轨道上旋转运动的演化方程

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-10-05 DOI: 10.1134/S0025654425606780

Nikolay Amel’kin

引用次数: 0

Incremental Approach to Solving Problems of Deformable Solid Body Mechanics Based on the Theory of Plastic Flow 基于塑性流动理论的固体变形力学增量求解方法

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-10-05 DOI: 10.1134/S0025654425606160

S. I. Feoktistov, I. K. Andrianov

{"title":"Incremental Approach to Solving Problems of Deformable Solid Body Mechanics Based on the Theory of Plastic Flow","authors":"S. I. Feoktistov, I. K. Andrianov","doi":"10.1134/S0025654425606160","DOIUrl":"10.1134/S0025654425606160","url":null,"abstract":"The study aims to obtain incremental equations for describing the elastoplastic behavior of an incompressible material based on the physical equations of the plastic flow theory without dividing the strains into elastic and plastic parts. The physical equations, in which the components of the increment tensor of the total strains are proportional to the components of the stress deviator, are obtained. The validity of the obtained equations is confirmed by the coincidence of the solutions of the elastoplastic problem for a thick-walled pipe under internal pressure in the case of simple loading, with the solutions obtained using the method of variable elasticity parameters, which used the basic assumptions and equations of the theory of small elastoplastic strains, and the method of sequential loading, which used incremental equations. In the case of a free pipe, the solution using the obtained equations has shown that, when the stress intensity depends on the strain intensity in a power-law manner, the trajectories of the change in the position of the end of the stress vector of the points in the pipe walls in the Ilyushin space are be linear, which corresponds to A.A. Ilyushin’s theorem on simple loading and confirms the validity of the obtained equations. The proposed method of Lagrange multipliers, based on the theory of plastic flow for an incompressible material, can be used to solve problems for all types of loading, including small elastic-plastic strains and large plastic strains, taking into account the loading history.","PeriodicalId":697,"journal":{"name":"Mechanics of Solids","volume":"61 3","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132316","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

Thin Isotropic Rotation Shells Out of the Elastic Limit 超出弹性极限的薄各向同性旋转壳

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-10-05 DOI: 10.1134/S0025654425604173

A. Y. Astakhova

引用次数: 0

Supersonic Head Waves at the Solid–Liquid Interface 固体-液体界面的超音速头波

IF 1 4区工程技术

Mechanics of Solids Pub Date : 2026-10-05 DOI: 10.1134/S0025654425605725

E. A. Kasparova, S. V. Kuznetsov

引用次数: 0