Acta Mechanica Solida Sinica最新文献_第10页

Discussions on Accurately and Efficiently Capturing Necking Onset in Uniaxial Tension Using Finite Element Modeling 用有限元模型准确有效地捕捉单轴拉伸缩颈起始点的探讨

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-08-13 DOI: 10.1007/s10338-025-00633-5

Hengyi Zhao, Peidong Lei, Pengfei Yang, Bin Liu

{"title":"Discussions on Accurately and Efficiently Capturing Necking Onset in Uniaxial Tension Using Finite Element Modeling","authors":"Hengyi Zhao, Peidong Lei, Pengfei Yang, Bin Liu","doi":"10.1007/s10338-025-00633-5","DOIUrl":"10.1007/s10338-025-00633-5","url":null,"abstract":"<div><p>Necking during uniaxial tension is a widely studied mechanical phenomenon of both theoretical and practical importance. This study investigates how to capture its onset accurately and efficiently using finite element methods. Various element types and boundary conditions are examined, including hexahedral, tetrahedral, and reduced-dimensional truss elements, under both displacement- and force-controlled loading. A counterintuitive force application issue is identified in commercial software when using tetrahedral elements, and the impact of mixed-element meshes is evaluated. It is shown that accurate necking prediction with hexahedral elements under displacement control requires a high aspect ratio and a fine mesh, while force control achieves similar accuracy with only a few elements. Truss elements perform reliably across all settings, even with minimal discretization. In contrast, mixing tetrahedral and hexahedral elements introduces errors: mesh refinement can reduce strain non-uniformity but not fully eliminate instability prediction deviations. These findings provide practical guidance for selecting element types and mesh strategies in necking simulations.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 3","pages":"241 - 250"},"PeriodicalIF":2.7,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147559536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

An Electro-thermo-mechanically Coupled Crystal Plasticity Model for Electroplasticity 电塑性的电-热-机械耦合晶体塑性模型

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-07-31 DOI: 10.1007/s10338-025-00630-8

Xinghai Zheng, Min Yi

{"title":"An Electro-thermo-mechanically Coupled Crystal Plasticity Model for Electroplasticity","authors":"Xinghai Zheng, Min Yi","doi":"10.1007/s10338-025-00630-8","DOIUrl":"10.1007/s10338-025-00630-8","url":null,"abstract":"<div>\u0000 \u0000 <p>This study establishes an electro-thermo-mechanically coupled crystal plasticity framework incorporating electroplastic effect to elucidate the fundamental mechanisms of current-assisted deformation in pure copper. In this framework, the thermal and athermal effects of electric current are independently described by the crystal plasticity constitutive model in terms of temperature and current density, respectively. The temperature field and current density distribution are obtained by solving the coupled heat conduction equation and current continuity equation. The model parameters are calibrated using experimental stress-strain responses of polycrystalline copper at different temperatures and current densities. Numerical simulations reveal that the thermal effects of electric current primarily manifest as shear modulus softening and enhanced thermal activation of dislocations, which have a relatively minor impact on flow stress. In contrast, the athermal effect significantly reduces both yield stress and hardening modulus by weakening the short-range and long-range resistances, leading to notable differences in flow stress during the work-hardening stage. Microstructural analysis shows that electric current alleviates stress concentrations caused by grain orientation differences and promotes more uniform distributions of dislocation density and slip deformation during plastic deformation. The proposed framework bridges the mesoscale dislocation slip and evolution with macroscale mechanical responses, providing critical insights for optimizing electrically-assisted forming processes through controlled electroplastic deformation.</p>\u0000 </div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 3","pages":"279 - 290"},"PeriodicalIF":2.7,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The Enhancement of Charge Transfer and Friction at the Interfaces between Defected h-BN and Water: a Density-Functional-Theory-Based Machine Learning Study 缺陷h-BN与水界面上电荷转移和摩擦的增强：基于密度泛函理论的机器学习研究

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-07-31 DOI: 10.1007/s10338-025-00628-2

Yu Zhong, Hao Li, Yufeng Guo

{"title":"The Enhancement of Charge Transfer and Friction at the Interfaces between Defected h-BN and Water: a Density-Functional-Theory-Based Machine Learning Study","authors":"Yu Zhong, Hao Li, Yufeng Guo","doi":"10.1007/s10338-025-00628-2","DOIUrl":"10.1007/s10338-025-00628-2","url":null,"abstract":"<div><p>Understanding the friction behavior between hexagonal boron nitride (h-BN) and water is critical for the potential applications of h-BN in liquid-related functional devices. By using a density-functional-theory (DFT)-based machine learning (ML) technique combined with long-time ML-parameterized molecular dynamics simulations, we have systematically investigated charge transfer and friction at the interfaces between h-BN and water. The introduction of defects (including Stone-Wales, B-vacancy, N-vacancy, and B-vacancy/N-vacancy defects) into h-BN significantly enhances heterogeneous charge polarization and distribution at h-BN layers, as well as increases the friction coefficients at water/h-BN interfaces compared to perfect h-BN. The observed increase in interfacial friction of defected h-BN can be attributed to stronger charge transfer and higher charge density at the defected h-BN layers induced by interactions with water molecules. Our results offer deeper insights into the role of defects in modulating charge exchange and transfer between water and h-BN, as well as their impact on interfacial friction.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 2","pages":"218 - 225"},"PeriodicalIF":2.7,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A Fully Edge-Based Smoothed Finite Element Method for Free Vibration Analysis of Functionally Graded Plates 功能梯度板自由振动分析的全边缘光滑有限元法

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-07-25 DOI: 10.1007/s10338-025-00635-3

Linli Mo, Shenshen Chen, Qinghua Li, Xiushao Zhao

{"title":"A Fully Edge-Based Smoothed Finite Element Method for Free Vibration Analysis of Functionally Graded Plates","authors":"Linli Mo, Shenshen Chen, Qinghua Li, Xiushao Zhao","doi":"10.1007/s10338-025-00635-3","DOIUrl":"10.1007/s10338-025-00635-3","url":null,"abstract":"<div><p>This paper presents a novel fully edge-based smoothed finite element method for free vibration analysis of functionally graded plates, incorporating a quasi-weak form of smoothed integral within an edge-based finite element method framework. Employing first-order shear deformation plate theory, the present method accounts for transverse shear strain and rotary inertia effects while addressing exponentially graded material properties along the plate thickness. The formulation integrates a three-node Mindlin plate element (MIN3) with a shear stabilization technique to prevent shear locking. The quasi-weak form of smoothed integral necessitates the evaluation of indefinite integrals for shape functions, effectively tacking domain integrals related to the shape functions without partial derivatives. By applying both quasi-weak form of smoothed integral and strain smoothing technique, all domain integrals in stiffness and mass matrices are converted into boundary integrals over smoothing domains. Therefore, isoparametric mapping and computing of Jacobian matrix are completely eliminated throughout the solution process. The natural frequencies obtained using the present method are in good agreement with those reported in the literature, highlighting the versatility of the present method for free vibration analysis of functionally graded plates. Notably, the present method demonstrates advantages in eliminating shear locking and reducing sensitivity to mesh distortion.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 6","pages":"1086 - 1102"},"PeriodicalIF":2.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145750476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Thermal Vibrations and Buckling Analysis of Bidirectional Functionally Graded Beams Under Axial and Transverse Temperature Gradients 轴向和横向温度梯度作用下双向功能梯度梁的热振动和屈曲分析

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-07-24 DOI: 10.1007/s10338-025-00620-w

Haizhou Liu, Yang Zhao, Fangtong Luo, Hao Tian, Weihua Xie

{"title":"Thermal Vibrations and Buckling Analysis of Bidirectional Functionally Graded Beams Under Axial and Transverse Temperature Gradients","authors":"Haizhou Liu, Yang Zhao, Fangtong Luo, Hao Tian, Weihua Xie","doi":"10.1007/s10338-025-00620-w","DOIUrl":"10.1007/s10338-025-00620-w","url":null,"abstract":"<div><p>Bidirectional functionally graded (BDFG) beams are a promising solution for spacecraft structures subjected to extreme thermal and vibrational environments due to their superior thermal performance and design flexibility. Therefore, developing an efficient and highly convergent thermal vibration analysis method for BDFG beams under complex temperature fields is of paramount importance. This paper proposes a Chebyshev spectral method based on Reddy’s higher-order shear deformation theory (HSDT) to investigate the thermoelastic vibrations of BDFG beams. The material properties are temperature-dependent and vary with both thickness and length. The proposed method is validated by comparing the results with those in the existing literature. The analysis reveals that the critical buckling temperature rise is primarily influenced by the ceramic content, but thermal buckling can be mitigated by adjusting the material distribution. A trade-off exists between suppressing thermal buckling and relaxing thermal stresses, necessitating a balanced approach. The titanium alloy BDFG beam offers a broader design envelope compared to the metal-ceramic BDFG beam. The method presented in this study will provide theoretical support and guidance for the design of BDFG beams.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 2","pages":"152 - 165"},"PeriodicalIF":2.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147341673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 on Hybrid Stress Finite Elements of 3D Arbitrary Polyhedral Considering Gravity 考虑重力的三维任意多面体混合应力有限元研究

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-07-22 DOI: 10.1007/s10338-025-00631-7

Runjie Wang, Ran Guo, Chang Liu

{"title":"Study on Hybrid Stress Finite Elements of 3D Arbitrary Polyhedral Considering Gravity","authors":"Runjie Wang, Ran Guo, Chang Liu","doi":"10.1007/s10338-025-00631-7","DOIUrl":"10.1007/s10338-025-00631-7","url":null,"abstract":"<div><p>This study proposes a novel gravity-considered three-dimensional arbitrary polyhedral hybrid stress finite element method (abbreviated as G-3DPHSEM) for numerical simulation of three-dimensional problems considering gravity effects. Based on the hybrid stress finite element theory, this study integrates gravity terms into the modified complementary energy functional of hybrid stress finite element, and proposes the functional of G-3DPHSEM. To verify the effectiveness of the method, a single-material model example, a multi-material model example, and a complex model example were constructed for numerical simulation. The calculation results of G-3DPHSEM were compared with those of the commercial finite element software. The comparison results show that: for the single-material case, the errors of this method are generally below 3% compared with commercial software’s results; for the multi-material case, the errors are generally below 5% compared with commercial software’s results; for the complex model, the errors are generally below 10% compared with commercial software’s results. Meanwhile, this method also demonstrates significant advantages in mesh generation: while ensuring computational accuracy, it possesses the core advantages of flexible mesh generation and substantial reduction in the number of elements, providing new ideas for numerical simulation of complex gravity problems (such as large and complex slopes and other engineering problems).</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 5","pages":"585 - 595"},"PeriodicalIF":2.7,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148011987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The Optimization Design of Particle-Reinforced Composite Materials Based on the Artificial Fish Swarm Algorithm and Voronoi Cell Finite Element Method 基于人工鱼群算法和Voronoi细胞有限元法的颗粒增强复合材料优化设计

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-07-21 DOI: 10.1007/s10338-025-00629-1

Peng Zhang, Ran Guo

{"title":"The Optimization Design of Particle-Reinforced Composite Materials Based on the Artificial Fish Swarm Algorithm and Voronoi Cell Finite Element Method","authors":"Peng Zhang, Ran Guo","doi":"10.1007/s10338-025-00629-1","DOIUrl":"10.1007/s10338-025-00629-1","url":null,"abstract":"<div><p>In this study, a collaborative optimization framework combining artificial fish swarm algorithm (AFSA) and Voronoi cell finite element method (VCFEM) is proposed to solve the problem of the influence of microstructure distribution on the macroscopic mechanical properties of particle-reinforced composites. Compared with the traditional displacement-based finite element method, VCFEM significantly improves the computational efficiency of multi-inclusion problems by means of generalized stress function and element local adaptation technology, and accurately captures the stress field discontinuity and interface stress concentration phenomenon. At the same time, AFSA abandons the dependence of traditional optimization methods on simplified models, and directly searches for the global optimal solution through discrete topological variables (particle positions). Its natural selection mechanism and swarm intelligence characteristics effectively overcome the local optimal trap. The numerical simulation results show that the proposed method exhibits high accuracy in both single- and multi-inclusion models (the error with the commercial software MARC is less than 5%), and in the complex model with 100 inclusions, the maximum Mises stress is reduced by 32.6% after optimization. The synergistic effect of the two breaks through the trade-off between efficiency and accuracy in traditional optimization, and provides the ability of both computational efficiency and global optimization for multi-scale composite material design.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 3","pages":"316 - 328"},"PeriodicalIF":2.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147560530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Phase Transition of the Constrained Shape Memory Alloy Materials Under Different Initial States 约束形状记忆合金材料在不同初始状态下的相变

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-07-14 DOI: 10.1007/s10338-025-00624-6

Shangyang Jin, Qingfei Wang, Jie Bai, Bingfei Liu

{"title":"Phase Transition of the Constrained Shape Memory Alloy Materials Under Different Initial States","authors":"Shangyang Jin, Qingfei Wang, Jie Bai, Bingfei Liu","doi":"10.1007/s10338-025-00624-6","DOIUrl":"10.1007/s10338-025-00624-6","url":null,"abstract":"<div><p>The recovery stress of materials has a great potential application in the field of road crack self-repair, composite material self-repair, and so on. Taking into account the diversity of practical application environments, the recovery stresses of constrained shape memory alloy (SMA) materials in the initial state of austenite and twinned martensite are given respectively in this paper. As for the experimental research, the austenitic SMA is loaded and constrained. The recovery stresses at different stages are observed by increasing the temperature. In terms of the theoretical research, constitutive models with the initial state of austenite and martensite are established respectively based on the one-dimensional macroscopic phenomenon theoretical model and constraints of SMA. These constitutive models can describe the relationship between recovery stress and volume fraction of martensite under temperature loading with different pre-strains. The theoretical model and experimental data in this paper can provide specific support for the practical engineering application of SMA recovery stress.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"38 6","pages":"1077 - 1085"},"PeriodicalIF":2.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145750429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Fretting Fatigue Behavior of Ti-6Al-4V Alloy Bolted Joints with Bolted Connection Features in Aero-engines 航空发动机中具有螺栓连接特征的Ti-6Al-4V合金螺栓连接的微动疲劳行为

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-07-08 DOI: 10.1007/s10338-025-00622-8

Chen Wang, Yibo Shang, Yue Su, Liucheng Zhou, Weifeng He, Bin Li

{"title":"Fretting Fatigue Behavior of Ti-6Al-4V Alloy Bolted Joints with Bolted Connection Features in Aero-engines","authors":"Chen Wang, Yibo Shang, Yue Su, Liucheng Zhou, Weifeng He, Bin Li","doi":"10.1007/s10338-025-00622-8","DOIUrl":"10.1007/s10338-025-00622-8","url":null,"abstract":"<div>\u0000 \u0000 <p>Fretting fatigue in bolted joints within aero-engine fan and compressor structures, characterized by multi-layered, thin-walled components and high preload, poses a significant structural safety challenge. This study investigates fretting fatigue in a bolted joint configuration simulating compressor axis contact with sealing disk ends, analyzing hysteresis loops, fretting scars, and fracture surfaces. Numerical simulation, incorporating a UMESHMOTION subroutine, and a critical plane approach utilizing the Smith-Watson-Thorpe parameter and Miner’s law, alongside wear morphology simulation, were employed to evaluate fretting fatigue life. Results revealed a non-monotonic relationship between surface quality and fretting fatigue life, demonstrating an initial life decrease followed by an increase, primarily due to a transition from partial to gross slip. The study highlights the significant impact of fretting on the life prediction of aero-engine bolted joints, demonstrating that improved surface quality does not always guarantee enhanced fatigue performance. The accuracy of the life prediction approach was validated through experimental correlation with wear-aware simulation results.</p>\u0000 </div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 2","pages":"176 - 189"},"PeriodicalIF":2.7,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147337842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Molecular Dynamics Simulation of Tribological Properties of PES Under Conditions of Positive and Negative Pressure 正负压条件下聚醚砜摩擦学性能的分子动力学模拟

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-07-07 DOI: 10.1007/s10338-025-00623-7

Zhichao Xin, Guilian Wang, Hang Zhang

引用次数: 0