Acta Mechanica Solida Sinica最新文献

{"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,&nbsp;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}

{"title":"Phase Transition of the Constrained Shape Memory Alloy Materials Under Different Initial States","authors":"Shangyang Jin,&nbsp;Qingfei Wang,&nbsp;Jie Bai,&nbsp;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}

{"title":"Fretting Fatigue Behavior of Ti-6Al-4V Alloy Bolted Joints with Bolted Connection Features in Aero-engines","authors":"Chen Wang,&nbsp;Yibo Shang,&nbsp;Yue Su,&nbsp;Liucheng Zhou,&nbsp;Weifeng He,&nbsp;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}

{"title":"Molecular Dynamics Simulation of Tribological Properties of PES Under Conditions of Positive and Negative Pressure","authors":"Zhichao Xin,&nbsp;Guilian Wang,&nbsp;Hang Zhang","doi":"10.1007/s10338-025-00623-7","DOIUrl":"10.1007/s10338-025-00623-7","url":null,"abstract":"<div><p>Polyethersulfone (PES) can be widely used in extreme environments due to its exceptional strength and stability. In this study, molecular dynamics (MD) simulations were used to construct tribological models of PES under varying pressures. The variations of PES molecular chains and frictional interface properties were explored for understanding microscopic tribological mechanism. The simulation results show that high pressure and high vacuum conditions reduce the coefficient of friction and wear rate. The variations in radial distribution function (RDF), relative concentration of atoms, friction interface temperature, and atomic motion velocity were analyzed. It was found that high pressure and high vacuum promote PES molecular chains moving away from the surface of the iron atomic layer, decreasing interaction energy, RDF, temperature, and velocity at the friction interface. This work offers novel methodologies and theoretical insights for studying the friction and wear of polymer composites in complex environments.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 2","pages":"190 - 200"},"PeriodicalIF":2.7,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147337809","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}

{"title":"Buckling and Dynamical Behaviors of Hard Magnetic Soft Pipe Conveying Fluid Under Distributed Spring Constraint","authors":"Jiachun Hu,&nbsp;Dilong Ma,&nbsp;Runqing Cao,&nbsp;Wei Chen,&nbsp;Huliang Dai,&nbsp;Lin Wang","doi":"10.1007/s10338-025-00619-3","DOIUrl":"10.1007/s10338-025-00619-3","url":null,"abstract":"<div><p>Fluid-conveying pipes have been widely used in diverse engineering fields, particularly in aerospace systems, nuclear power plants, oil transportation infrastructure, and biomedical devices. The recent advancements in 3D printing and materials science have increased research interest in the stability and vibration characteristics of slender pipes fabricated from hard magnetic soft (HMS) materials for magnetic control applications. Although several theoretical investigations have been conducted on magnetically controlled cantilevered fluid-conveying pipes, the understanding of their dynamical behavior in vascular environments remains incomplete. In this study, we investigate the buckling and dynamical behaviors of an HMS pipe under the combined effects of an applied magnetic field and nonlinear distributed spring constraints. By solving the nonlinear governing equation, natural frequencies, critical flow velocities, buckling displacements, and dynamic responses of the HMS pipe conveying fluid are obtained. The analysis reveals that the addition of distributed spring constraints leads to a substantial reduction in both buckling and dynamic displacements of the pipe system. Under constant magnetic field conditions, the pipe exhibits static deformation characteristics even when exposed to flow velocities exceeding the critical threshold for buckling instability. When subjected to an alternating magnetic field, the pipe system exhibits periodic oscillatory behavior across a wide range of flow velocities. This periodic response is characterized by displacement variations that show direct correlation with changes in the magnetic declination angle. Notably, nonlinear resonance phenomena associated with the first-mode natural frequency can occur even when the flow velocity is below the threshold for buckling instability. These results demonstrate that both magnetic field strength and declination angle offer a possible means for adjusting the stability, buckling behavior, and dynamic response of an HMS pipe.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 1","pages":"52 - 64"},"PeriodicalIF":2.7,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996619","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}

{"title":"A Survey of Empirical Atomic Potentials for Inorganic Perovskites","authors":"Zi-Hao Xu,&nbsp;Chuan-Xin Cui,&nbsp;Jin-Wu Jiang","doi":"10.1007/s10338-025-00626-4","DOIUrl":"10.1007/s10338-025-00626-4","url":null,"abstract":"<div><p>Inorganic perovskites, a class of materials with the general formula ABX₃, exhibit a wide range of electronic, dielectric, and structural properties, making them pivotal in energy, electronics, and catalysis applications. Accurate atomistic simulations of these materials require accurate interatomic potentials that capture both short-range and long-range interactions. While first-principles methods are of high accuracy, empirical and machine learning potentials remain essential for large-scale simulations. This survey categorizes and reviews the atomic potentials used in inorganic perovskite modeling based on how they treat electrostatic interactions: potentials without charges, potentials with constant charges, and potentials with variable charges. Given the ionic nature of perovskites, we emphasize the importance of charge treatment, and each class of potentials is discussed in detail with representative examples, functional forms, and application scenarios. For comparison, we perform molecular dynamics simulations to calculate the critical temperature for the phase transition of the perovskite CsPbI₃ with available empirical potentials, highlighting their strengths and limitations in capturing structural evolution. Finally, we outline future directions for developing more accurate and transferable atomic potentials for inorganic perovskites. We hope that this review can serve as a guiding resource for researchers who are starting to perform simulations for inorganic perovskites.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 2","pages":"121 - 132"},"PeriodicalIF":2.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336441","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}

{"title":"Fractal-Based Acoustic Metamaterials Coupling with Micro-Perforation for Low-Frequency Sound Absorption","authors":"Dongxing Cao,&nbsp;Liming Wang,&nbsp;Junru Wang,&nbsp;Jianfei Wang,&nbsp;Xiangying Guo,&nbsp;Shuai Huang","doi":"10.1007/s10338-025-00625-5","DOIUrl":"10.1007/s10338-025-00625-5","url":null,"abstract":"<div><p>Acoustic metamaterials (AMs) exhibit outstanding sound absorption performance due to their customizable design. In this work, a low-frequency sound-absorbing metamaterial plate, which combines a fractal-based labyrinth acoustic metamaterial (FLAM) and a micro-perforation panel, is proposed. The theoretical, simulation, and experimental methods are used to comprehensively examine the sound absorption performance. A triangular fractal curve is first introduced, and the combined FLAM model is constructed. An equivalent straight channel model is developed to study the effects of the structural parameters on the sound absorption coefficients. The finite element analysis (FEA) is further conducted to validate the theoretical results. All the findings indicate that the proposed combined FLAM exhibits excellent sound absorption performance at a deep sub-wavelength scale, with absorption coefficients of 0.89, 0.98, and 1.00 for the first three fractal orders, respectively. Finally, the prototypes are fabricated, and the impedance tube experiments are conducted, yielding results that align closely with both analytical and FEA results. Notably, the sound absorption performance of large-area sound-absorbing plates is also investigated by splicing two/four FLAMs together, demonstrating a relative absorption bandwidth exceeding 35%. This work offers a viable alternative to low-frequency sound-absorbing materials for potential engineering applications.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 2","pages":"201 - 217"},"PeriodicalIF":2.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336442","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}

{"title":"Green’s Function for Two-Dimensional Piezoelectric Quasicrystals Containing Elliptical Defects","authors":"Tangrui Lai,&nbsp;Xiaoyu Fu,&nbsp;Xiang Mu,&nbsp;Liangliang Zhang,&nbsp;Yang Gao","doi":"10.1007/s10338-025-00615-7","DOIUrl":"10.1007/s10338-025-00615-7","url":null,"abstract":"<div><p>Based on the linear elasticity theory of quasicrystals, this study addresses two defect problems in two-dimensional piezoelectric quasicrystals: rigid inclusions and holes. Using the Stroh formalism, Green’s function solutions are obtained for these defects under concentrated and uniformly distributed forces. Numerical examples are presented to analyze the mechanical behavior when loads are applied at various positions, including the center, outside, on the boundary, and at infinity of the elliptical defect. The study emphasizes the significant impact of the phonon line force on the distribution of key physical quantities. Results show that elliptical defects significantly disrupt multiple physical fields, leading to substantial variations in displacement and potential at the hole boundaries and pronounced stress concentrations. The stress in the phason field near the elliptical defect boundary exhibits complex variations under loading conditions, and the piezoelectric effect becomes more pronounced. These findings provide critical guidance for designing quasicrystal-based smart materials with controlled defect responses.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 1","pages":"65 - 80"},"PeriodicalIF":2.7,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996618","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}

{"title":"A New Three-Dimensional Voronoi Cell Finite Element Method for Particle-Reinforced Composites","authors":"Huici Dong,&nbsp;Ran Guo","doi":"10.1007/s10338-025-00618-4","DOIUrl":"10.1007/s10338-025-00618-4","url":null,"abstract":"<div><p>This paper proposes a state-of-the-art three-dimensional Voronoi cell finite element method (3D VCFEM) aimed at investigating the mechanical properties of particle-reinforced composites (PRCs) in space under different microstructural properties. Firstly, the modified residual energy generalized function of 3D VCFEM was proposed by applying the hybrid stress element method, and the element format of the 3D Voronoi element was constructed. On this basis, the interaction between the matrix and the inclusions was considered, and the higher-order stress function including the interaction stress term was constructed. Secondly, to solve the difficulty of integrating easily due to the complexity and irregularity of the integration region in space, Delaunay tetrahedra were introduced within the 3D Voronoi element for mesh refinement. It simplified the integration process. Finally, to verify the accuracy and efficiency of the 3D VCFEM model, comparative models of 3D VCFENM and FEM were established for analysis and discussion. The stress field and strain field were compared and analyzed for the first time. An example was also given for the presence of a large number of randomly distributed inclusion particles. The results showed that under the same accuracy, 3D VCFEM had the advantages of convenient mesh delineation and high computational efficiency compared with FEM, which provided a new way of thinking to analyze the actual PCRs.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 1","pages":"90 - 100"},"PeriodicalIF":2.7,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996592","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}

{"title":"Non-destructive Testing of Envelope Material Based on Wave Propagation Characteristics","authors":"Jing Cao,&nbsp;Bo Yuan,&nbsp;Kai Wang,&nbsp;Jun Wu,&nbsp;Zheng-Yang Li,&nbsp;Yanchu Yang,&nbsp;Dongjia Yan,&nbsp;Peijun Wei","doi":"10.1007/s10338-025-00616-6","DOIUrl":"10.1007/s10338-025-00616-6","url":null,"abstract":"<div><p>Long-duration vehicles in near space have achieved great success; however, the non-destructive testing (NDT) methods for the envelope materials of such long-duration vehicles remain blank. In this paper, we propose the air-coupled ultrasonic NDT method theoretically. In the theoretical analysis process, the envelope material is simplified as an orthogonal sandwich structure. To calculate the displacement and stress fields of each medium, the state vectors are established and the transfer matrices of the material from the upper interface to the lower interface are obtained by using boundary conditions. Then, linear equations about the amplitude of reflected and transmitted waves are derived by combining the coupling boundary conditions of air and solid. The effects of incident angles, inflation of the envelope material, and debonding of the interfaces on the transmission coefficients are considered. The results show that the air-coupled ultrasonic NDT of the envelope material can be carried out in the pre-inflated state. Finally, a method for identifying interface debonding is proposed based on judging transmission coefficients within a certain frequency range.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 1","pages":"24 - 35"},"PeriodicalIF":2.7,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145996622","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}