Acta Mechanica Solida Sinica最新文献_第6页

Coupled Band-Gap Property of Meta-pipe with Inertial Amplification and Local Resonance Mechanisms 具有惯性放大和局部共振机制的元管耦合带隙特性

IF 2.6 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-12-22 DOI: 10.1007/s10338-025-00677-7

Muhammad Shoaib, Jiping Jing, Zhijing Wu, Fengming Li, Long Liu

{"title":"Coupled Band-Gap Property of Meta-pipe with Inertial Amplification and Local Resonance Mechanisms","authors":"Muhammad Shoaib, Jiping Jing, Zhijing Wu, Fengming Li, Long Liu","doi":"10.1007/s10338-025-00677-7","DOIUrl":"10.1007/s10338-025-00677-7","url":null,"abstract":"<div><p>In this paper, inertial amplification (IA) and local resonance (LR) mechanisms are incorporated into a pipe structure to develop a novel meta-pipe system, aiming at enhancing vibration reduction property across a broad frequency range. A coupled band-gap (BG) is formed when the IA and LR mechanisms are integrated within a meta-pipe unit. Based on the Euler–Bernoulli beam theory, the wave equation for the proposed meta-pipe is derived. The BG characteristics of the proposed meta-pipe are analyzed using the transfer matrix method. The excellent agreement between theoretical and experimental results confirms the validity of the proposed analytical approach for characterizing the meta-pipe. The coupling effects of IA and LR mechanisms are shown to broaden the original BG range. Moreover, the width and attenuation capacity of the coupled BGs increase with higher amplification mass <i>m</i><sub><i>a</i></sub>, amplification angle, unit cell length, LR mass <i>m</i><sub><i>b</i></sub> and length of LR rings <i>l</i><sub>1</sub>. These findings contribute to the development of advanced smart metamaterials and meta-structures designed for effective vibration mitigation.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 9","pages":"1233 - 1245"},"PeriodicalIF":2.6,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014578","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

Programmable Mechanical Metastructure with Symmetrically Tunable Linear and Nonlinear Properties 具有对称可调线性和非线性特性的可编程机械元结构

IF 2.6 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-12-19 DOI: 10.1007/s10338-025-00674-w

Miao Yu, Xin Fang, Dianlong Yu

{"title":"Programmable Mechanical Metastructure with Symmetrically Tunable Linear and Nonlinear Properties","authors":"Miao Yu, Xin Fang, Dianlong Yu","doi":"10.1007/s10338-025-00674-w","DOIUrl":"10.1007/s10338-025-00674-w","url":null,"abstract":"<div><p>Variable-stiffness materials/structures are poised to optimize system performance in complex environments. Mechanical metastructures hold significant potential for smoothly and broadly tuning both linear and nonlinear properties. However, current tunable metastructures often exhibit asymmetric tension-compression stiffness and underutilize nonlinear tunability. Here we propose novel programmable metastructures with symmetrically tunable linear and nonlinear behaviors. Inspired from planetary gear systems, the tunable metacell comprises a circular slide rail and rotatable bidirectional pivots, enabling balanced stiffness under tension and compression, with a 30× tunable linear stiffness. Incorporating a subtle clearance within the metacell, we uncover a robust “clearance-lever” mechanism that enables a remarkable 10<sup>6</sup>× tunability of nonlinear stiffness, smoothly transitioning from linear to strongly nonlinear states. Beyond static properties, the metastructures present versatile tunability on both frequency and linear and nonlinear vibration response spectra. The dynamic metastructure designed based on this strategay offers tunable bandgap for elastic wave manipulation. Therefore, this work not only provides a new method for designing programmable metastructures, but also demonstrates its broad application sceneries for vibration isolation, absorption and wave manipulation.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 8","pages":"1049 - 1062"},"PeriodicalIF":2.6,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782261","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 Fastly Convergent Approximate Solution of the Duffing Equation with the Extended Rayleigh-Ritz Method 扩展Rayleigh-Ritz法Duffing方程的快速收敛近似解

IF 2.6 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-12-17 DOI: 10.1007/s10338-025-00668-8

Tianzhe Zheng, Lihong Wang, Chencheng Lian, Huimin Jing, Hui Chen, Ji Wang

{"title":"A Fastly Convergent Approximate Solution of the Duffing Equation with the Extended Rayleigh-Ritz Method","authors":"Tianzhe Zheng, Lihong Wang, Chencheng Lian, Huimin Jing, Hui Chen, Ji Wang","doi":"10.1007/s10338-025-00668-8","DOIUrl":"10.1007/s10338-025-00668-8","url":null,"abstract":"<div>\u0000 \u0000 <p>The Duffing equation has been frequently encountered in many scientific and engineering fields for the accurate description of nonlinear phenomena associated with the temporal evolution, and the solution techniques of this highly nonlinear differential equation, even with complications, have been extensively studied for practical applications. Most of the methods for approximate solutions are in the asymptotic nature with the series expansions, and the convergence is always a challenge in expecting a better expression for a faster convergence. As the latest effort in solving the Duffing equation with a newer technique, the extended Rayleigh-Ritz method with an integration over the fundamental period of the solution of the harmonic function is used for the approximate frequency and amplitudes, and the fast convergence is achieved with just two terms, whether it is a weak nonlinear problem for small parameters or a strong nonlinear problem for large parameters. The convergent approximate solutions are closer to the exact values, demonstrating the effectiveness of the latest technique for strong nonlinear equations with a similar nature and property.</p>\u0000 </div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 8","pages":"1180 - 1184"},"PeriodicalIF":2.6,"publicationDate":"2025-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782500","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 the Damage and Heat Generation Mechanism of Epoxy Resin During Ultra-low Temperature Impact 环氧树脂在超低温冲击过程中的损伤及产热机理研究

IF 2.6 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-12-15 DOI: 10.1007/s10338-025-00678-6

Runze Zhang, Zudian Liang, Jia Yan, Shufeng Zhang, Zhanjun Wu, Lei Yang

{"title":"Study on the Damage and Heat Generation Mechanism of Epoxy Resin During Ultra-low Temperature Impact","authors":"Runze Zhang, Zudian Liang, Jia Yan, Shufeng Zhang, Zhanjun Wu, Lei Yang","doi":"10.1007/s10338-025-00678-6","DOIUrl":"10.1007/s10338-025-00678-6","url":null,"abstract":"<div><p>This study investigated the damage and heat generation behavior of epoxy resin during ultra-low temperature impact to explain the material ‘s compatibility with liquid oxygen. A thermo-mechanical constitutive model was developed, incorporating hydrostatic pressure sensitivity and exponential stiffness degradation to simulate damage propagation. A heat generation model based on plastic work and fracture energy was also established to describe heat generation behavior. The model was first verified by simulating low-temperature tensile and compressive behaviors of Bisphenol F epoxy resin, with numerical predictions showing good agreement with experimental results. Ultra-low temperature impacts of epoxy resin specimens with 98 J energy were then simulated. The damage patterns closely matched experimental observations. High-temperature hotspots appeared around the impact crater edges and at the center of the samples, aligning with experimental findings. When the impactor tilted, the hotspot temperature at the crater edge increased with the impact angle, while the temperature at the center decreased. Additionally, surface roughness significantly increased hotspot temperature under low-temperature impact. These findings enhance the understanding of epoxy resin ‘s behavior in extreme environments and provide valuable insights for applications involving liquid oxygen.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 7","pages":"907 - 918"},"PeriodicalIF":2.6,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148613304","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

Size-Dependent Bending and Vibration Analysis of Fractional-Order Piezoelectric Timoshenko Nanobeam 分数阶压电Timoshenko纳米梁的尺寸相关弯曲和振动分析

IF 2.6 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-12-15 DOI: 10.1007/s10338-025-00681-x

Hai Qing, Zhi-Wen Fan

引用次数: 0

A Rationalized Enhancement of the Tsai-Wu Failure Criterion Considering the Stress States of Fibers and Matrix Simultaneously for the Bridging Model 桥接模型中同时考虑纤维和基体应力状态的Tsai-Wu破坏准则的合理改进

IF 2.6 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-12-10 DOI: 10.1007/s10338-025-00670-0

Minghui Cao, Xitao Zheng, Leilei Yan, Weijie Ma

{"title":"A Rationalized Enhancement of the Tsai-Wu Failure Criterion Considering the Stress States of Fibers and Matrix Simultaneously for the Bridging Model","authors":"Minghui Cao, Xitao Zheng, Leilei Yan, Weijie Ma","doi":"10.1007/s10338-025-00670-0","DOIUrl":"10.1007/s10338-025-00670-0","url":null,"abstract":"<div><p>To improve the prediction accuracy under multiaxial stress states of the Bridging Model, this paper reconstructs the Tsai-Wu failure criterion by considering the stress states of fibers and matrix simultaneously. Based on the stress invariants, the derived stress concentration factors (SCFs) are used for fitting quadratic curves to determine SCFs under multiaxial stress states. The parameters of the reconstructed Tsai-Wu failure criterion are defined based on assumptions derived from experimental results. Furthermore, an empirical correction coefficient for longitudinal shear stress is introduced to reflect the effect of transverse compressive stress in impeding shear failure. The failure envelopes predicted by the reconstructed and original failure criteria are compared with existing experimental data. The results demonstrate that the reconstructed failure criterion achieves higher prediction accuracy, particularly under multiaxial stress states, which improves the applicability of the Bridging Model in engineering applications.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 8","pages":"1197 - 1208"},"PeriodicalIF":2.6,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782465","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 Adaptive Cell Method for Predicting the Effective Properties of Unidirectional Composites 预测单向复合材料有效性能的自适应单元法

IF 2.6 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-12-08 DOI: 10.1007/s10338-025-00672-y

Jiaxin Fang, Liming Chen, Shaowei Zhu, Zhaoxin Yun, Weiguo Li

{"title":"An Adaptive Cell Method for Predicting the Effective Properties of Unidirectional Composites","authors":"Jiaxin Fang, Liming Chen, Shaowei Zhu, Zhaoxin Yun, Weiguo Li","doi":"10.1007/s10338-025-00672-y","DOIUrl":"10.1007/s10338-025-00672-y","url":null,"abstract":"<div>\u0000 \u0000 <p>This paper proposed an approximate micromechanical approach named the Adaptive Cell Method (ACM) for analyzing the unidirectional (UD) composite. This method adopted a cell-based micromechanical model, dividing the repeating unit cell (RUC) into four variable sub-cells and characterizing their internal mechanical behavior through average stress fields. Due to material property mismatch, the geometric dimensions and internal stresses of each sub-cell were determined based on the interfacial continuity conditions and the principle of minimum potential energy. Subsequently, various effective properties of UD composites were predicted by the average stress-strain theory, including elastic modulus, coefficient of thermal expansion, and thermal conductivity. The prediction of the proposed method perfectly reproduced the finite element simulation of the original unit cell microstructure. Comparative studies with experimental data, classical theoretical methods, and finite element models effectively validated the advantages in accuracy, efficiency, and robustness. This approach provided a reliable and efficient technical means for analyzing UD composites, holding significant importance for the design and application of composite materials in engineering fields.</p>\u0000 </div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 7","pages":"919 - 932"},"PeriodicalIF":2.6,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148613367","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

Characterization of Directional Flexural Wave Propagation in Viscoelastic Phononic Crystal Plate 粘弹性声子晶体板中定向弯曲波传播特性研究

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-12-08 DOI: 10.1007/s10338-025-00676-8

Wen-Han Guo, Kun Wu, Yan-Feng Wang, Yue-Sheng Wang

{"title":"Characterization of Directional Flexural Wave Propagation in Viscoelastic Phononic Crystal Plate","authors":"Wen-Han Guo, Kun Wu, Yan-Feng Wang, Yue-Sheng Wang","doi":"10.1007/s10338-025-00676-8","DOIUrl":"10.1007/s10338-025-00676-8","url":null,"abstract":"<div>\u0000 \u0000 <p>Extensive studies have revealed the phenomenon of directional wave propagation in phononic crystals (PnCs) and metamaterials, due to the functionality of energy and information transportation along specified paths. Distinguished from previous elastic media, this work combines finite element simulations and experiments to investigate directional flexural wave propagation in viscoelastic PnC plates. The sample of cross-shaped viscoelastic PnC plate is fabricated from epoxy resin with characterization of viscoelasticity by Kelvin-Voigt model. Firstly, non-negligible discrepancies of wave attenuation are observed between complex band structures of unit cell and transmission spectrum of finite PnC plate. In comparison, complex dispersion and modal analysis on the basis of supercell more accurately capture the wave attenuation ranges. Secondly, both simulations and experiments confirm the phenomena of flexural wave propagation along either single or two orthogonal directions. The complex band structures of supercell are employed to help predict the spatial attenuation of evanescent wave within directional bandgaps. The characterization results, with combination of low-order evanescent modes, agree well with numerical simulations and experimental measurements. In addition, the orthotropy index and concentration index of wave transmitting are proposed to evaluate the directional wave propagation. For wave transmitting in a single direction, there is significant and positive correlation between concentration index along the propagating direction and the imaginary part of wavenumber along its orthogonal direction. This work could shed light on the directional propagation of flexural waves, which is beneficial to the design of viscoelastic devices and waveguides.</p>\u0000 </div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 4","pages":"521 - 533"},"PeriodicalIF":2.7,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733070","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

Microstructure Dynamic Evolution and Coupling Analysis of Graphite Electrode during the Lithiation Process 石墨电极在锂化过程中的微观结构动态演变及耦合分析

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-12-03 DOI: 10.1007/s10338-025-00675-9

Puheng Sun, Haimei Xie, Changyi Hong, Qian Zhang, Yilan Kang

{"title":"Microstructure Dynamic Evolution and Coupling Analysis of Graphite Electrode during the Lithiation Process","authors":"Puheng Sun, Haimei Xie, Changyi Hong, Qian Zhang, Yilan Kang","doi":"10.1007/s10338-025-00675-9","DOIUrl":"10.1007/s10338-025-00675-9","url":null,"abstract":"<div><p>Microstructures serve as the fundamental energy-storage units, and understanding their mechano-electrochemical evolution is critical for achieving high performance, high efficiency, and long lifespan. This study employs molecular dynamics theory, utilizing Large-scale Atomic/Molecular Massively Parallel Simulator software and the Reactive force field, to visualize the lithium insertion process in graphite at the atomic scale. The nonlinear evolution of key parameters, including three-dimensional strain, fracture strength, total energy, and diffusion coefficients during ion insertion, migration, and aggregation is analyzed. The results show that with increasing lithium concentration, the total energy of the system decreases gradually, while the diffusion capability is significantly reduced; the three-dimensional strain of the microstructure exhibits anisotropy, with slow in-plane expansion and abrupt interlayer dilation, accompanied by a pronounced decrease in fracture strength and ductility of the staged structures. Based on that, this study further discusses the synergistic and bidirectional coupling effects between electrochemical evolution and mechanical response: higher lithium concentration causes energy reduction, diffusion limitation, and mechanical degradation, while structural deformation and mechanical degradation in turn restrict ion migration pathways. These findings reveal the intrinsic correlations among phase transitions, structural evolution, and performance degradation. This study provides kinetic insights into electrochemical reactions and ion diffusion behavior during graphite electrode charging and discharging, offering a valuable reference for future battery material design and optimization.</p></div>","PeriodicalId":50892,"journal":{"name":"Acta Mechanica Solida Sinica","volume":"39 4","pages":"510 - 520"},"PeriodicalIF":2.7,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733071","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

Puncture of Mechanochromic Tough Elastomeric Membranes 机械致变色韧性弹性膜的穿刺

IF 2.7 3区工程技术

Acta Mechanica Solida Sinica Pub Date : 2025-12-01 DOI: 10.1007/s10338-025-00671-z

Yongzhe Jiang, Peng Sun, Le Du, Huiming Wang, Rui Xiao

引用次数: 0