International Journal of Mechanical Sciences最新文献

Superplastic constitutive modeling of TA32 alloy with two-phase characteristics 具有两相特性的TA32合金超塑性本构模型

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-30 DOI: 10.1016/j.ijmecsci.2025.110298

Yang Liu , Chaoyang Sun , Zhiqiang Li , Bing Zhao , Xintao Zhu , Sinuo Xu , Lingyun Qian

{"title":"Superplastic constitutive modeling of TA32 alloy with two-phase characteristics","authors":"Yang Liu , Chaoyang Sun , Zhiqiang Li , Bing Zhao , Xintao Zhu , Sinuo Xu , Lingyun Qian","doi":"10.1016/j.ijmecsci.2025.110298","DOIUrl":"10.1016/j.ijmecsci.2025.110298","url":null,"abstract":"<div><div>This study proposes a physically-based constitutive model to quantitatively describe both macro-mechanical behavior and dynamic two-phase microstructure evolution of near-α TA32 Ti alloy under superplasticity-favored deformation conditions. The alloy’s microstructure morphology and orientation were observed, encompassing the α to β phase transformation, the steady-state evolution and dynamic coarsening of primary α (α<sub>p</sub>) and parent β grain sizes, the simultaneous occurrence of discontinuous dynamic recrystallization (DDRX) and continuous dynamic recrystallization (CDRX) within α phase, and crystallographic orientation stability of the α-Ti lattice. It is demonstrated that grain boundary sliding (GBS) predominates in superplastic deformation. The superplastic constitutive model was developed following the identified two-phase microstructure characteristics and deformation mechanisms, elucidating the relationships among phase fraction, grain size, dynamic recrystallization (DRX) fraction, and dislocation density, while given variations in plastic strain. This model effectively describes the two-phase flow behavior of TA32 alloy during superplastic deformation, considering the dislocation densities of both phases and the effect of phase growth on β grain size. Furthermore, this model was implemented into the VUMAT subroutine to develop a finite element (FE) model enabling accurate prediction of the shape and microstructure distribution in uniaxial tensile specimens. The simulation results show a steady-state grain size and demonstrate excellent predictive capabilities for flow stress and rate-dependent internal state variables both within and outside the calibration range. The superplastic forming (SPF) process of a pyramidal lattice structure was simulated using this model, successfully capturing the evolution of α/β phase characteristics during the forming of geometrically complex TA32 alloy components.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"296 ","pages":"Article 110298"},"PeriodicalIF":7.1,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Atomistic simulations of crack grain-boundary interactions in copper 铜裂纹晶界相互作用的原子模拟

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-28 DOI: 10.1016/j.ijmecsci.2025.110318

Xiang Zhang , Yaping Liu , S.I. Kundalwal , Puhao Li , Mengfei Zhang , Fan Yang

{"title":"Atomistic simulations of crack grain-boundary interactions in copper","authors":"Xiang Zhang , Yaping Liu , S.I. Kundalwal , Puhao Li , Mengfei Zhang , Fan Yang","doi":"10.1016/j.ijmecsci.2025.110318","DOIUrl":"10.1016/j.ijmecsci.2025.110318","url":null,"abstract":"<div><div>Grain boundaries (GBs) are important structural features and play an important role in coordinating the plastic deformation of nanocrystalline metals. In the quasi-3D case, the GB structure is determined by three geometric parameters, that is, the GB inclination angle and the crystal orientations of the two forming grains which determine the GB misorientation angle. In this paper, the effects of geometric parameters of the GB on the crack propagation behavior are investigated. Extensive molecular dynamics (MD) simulations are carried out to simulate the uniaxial tension of a series of pre-cracked bicrystal specimens, whose geometric parameters are determined using a novel Sudoku sampling method. Sudoku sampling is based on the unique row and column non-repeat rule of the Sudoku game to achieve uniform sampling in the sampling space, and at the same time to reduce the computational cost. From the MD simulation results five patterns of cracking modes can be discerned, i.e., crack tip blunting, intergranular sliding, transgranular cracking, transgranular sliding and intergranular cracking. It indicates that the GB inclination angle is the most influential factor for the crack propagation behavior, with smaller GB inclination angle corresponding to smaller crack propagation resistance. The GB misorientation angle is second influential, with a large misorientation angle favoring the intergranular crack propagation. This study deepens the understanding of effect of grain boundaries on the fracture behavior in nanocrystalline metals, which guides the development of damage-resistant materials through GB engineering strategy.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"296 ","pages":"Article 110318"},"PeriodicalIF":7.1,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Investigation on ultra-precision machining of eccentric shaft by applying UEVC 应用UEVC超精密加工偏心轴的研究

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-28 DOI: 10.1016/j.ijmecsci.2025.110311

Lin Wang , Zhixuan Bian , Zixuan Chen , Shanyi Ma , Gang Wang , Yannan Feng , Jianguo Zhang , Junfeng Xiao , Jianfeng Xu

{"title":"Investigation on ultra-precision machining of eccentric shaft by applying UEVC","authors":"Lin Wang , Zhixuan Bian , Zixuan Chen , Shanyi Ma , Gang Wang , Yannan Feng , Jianguo Zhang , Junfeng Xiao , Jianfeng Xu","doi":"10.1016/j.ijmecsci.2025.110311","DOIUrl":"10.1016/j.ijmecsci.2025.110311","url":null,"abstract":"<div><div>The eccentric shaft, a critical component in robotics and automation, poses substantial machining challenges due to its distinctive geometry and the high hardness and low fracture toughness of SCM420H steel. Brittle damage, including fractures and cracks, is prone to occur during the machining, which inevitably shortens the service life of the parts and limits their subsequent applications. This study employs ultrasonic elliptical vibration cutting (UEVC) to address these issues, developing kinematic and mathematical models to characterize tool-workpiece interaction and material removal. The model is validated by a high correlation between predictions and experiments (coefficient of determination R² = 0.944, mean relative deviation = 6.39 %). A comparative experiment between traditional grinding and UEVC was conducted, employing scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and other characterization techniques to analyze microstructural features, subsurface damage mechanisms, and material removal behavior. The results show that, compared to grinding, UEVC reduces surface roughness (Sa) by 91.7 %, improves cylindricity by 73.5 %, and achieves a 4.77 nm smooth surface. Furthermore, UEVC effectively suppresses subsurface damage, limiting the damage layer to approximately 1.46 μm, thus preventing microcrack formation, material spalling, and brittle fracture typical of grinding. These findings underscore the advantages of UEVC in precision machining of eccentric components.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"296 ","pages":"Article 110311"},"PeriodicalIF":7.1,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143898564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 chemo-thermo-viscoelastic model for early-age concrete behaviors 早期混凝土行为的化学-热-粘弹性模型

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-28 DOI: 10.1016/j.ijmecsci.2025.110304

Peng Zhang , Ming-Feng Kai , Jian-Guo Dai

{"title":"A chemo-thermo-viscoelastic model for early-age concrete behaviors","authors":"Peng Zhang , Ming-Feng Kai , Jian-Guo Dai","doi":"10.1016/j.ijmecsci.2025.110304","DOIUrl":"10.1016/j.ijmecsci.2025.110304","url":null,"abstract":"<div><div>In this study, a novel chemo-thermo-viscoelastic phase field model is proposed for simulating early-age concrete behaviors. The model integrates multiple chemical and physical processes, including hydration reaction, thermal conduction, elastic and viscous deformations, damage, and their interactions. The thermodynamic consistency of these coupled processes is ensured through the first and second laws of thermodynamics. In the model, elastic and viscous processes are described incrementally using the solidification theory, accounting for property evolution during hydration. Damage, coupled with elastic and viscous deformations is modeled with a new viscoelastic phase field framework employing Kelvin-Voigt chains. Additionally, chemo-thermal effects are coupled with deformations through autogenous shrinkage, thermal expansion, and thermal transient creep. The model’s validation is verified through three representative experiments: a creep test, a thermally active restrained shrinkage ring test, and a massive concrete wall cracking test. The simulation results show good alignment with the experimental data.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"296 ","pages":"Article 110304"},"PeriodicalIF":7.1,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

MD benchmarks: Size-dependent tension, bending, buckling, and vibration of nanobeams MD基准：纳米梁的尺寸依赖性张力、弯曲、屈曲和振动

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-27 DOI: 10.1016/j.ijmecsci.2025.110316

Hossein Darban

{"title":"MD benchmarks: Size-dependent tension, bending, buckling, and vibration of nanobeams","authors":"Hossein Darban","doi":"10.1016/j.ijmecsci.2025.110316","DOIUrl":"10.1016/j.ijmecsci.2025.110316","url":null,"abstract":"<div><div>Nonclassical continuum mechanics-based modeling of small-scale structures, such as micro- and nanobeams, is a research topic that has been extensively studied and is beneficial for designing intelligent devices. The accuracy of size-dependent beam models remains unverified in many cases in the literature due to the lack of experimental and molecular dynamics (MD) results at small scales. This paper aims to provide comprehensive MD benchmark solutions that facilitate the verification of nonclassical continuum models for miniaturized beams under tension, bending, buckling, and free transverse vibration. Size-dependent Young’s moduli, bending stiffnesses, buckling loads, and natural frequencies are presented through large-scale MD simulations involving up to one million atoms for silicon (Si) nanobeams with square, rectangular, and circular cross-sections. Bending and buckling analyses are conducted on clamped–clamped nanobeams, while a nanocantilever configuration is employed for the vibration analysis. Additionally, novel MD results are presented on the size effect in deflection profiles under bending, as well as buckling and vibrational mode shapes. The size effects resulting from scaling (where all dimensions of the nanobeams change proportionally) and independent variations in thickness, length, and width are systematically investigated. The mechanical problem, aspect ratio, and the cross-sectional geometry of the nanobeams influence the size effect. It is less sensitive to variations in length and weaker in nanobeams with rectangular cross-sections compared to those with circular ones. In all cases, silicon nanobeams exhibit a softer mechanical response as their dimensions decrease, consistent with the size effect previously observed in experiments and atomistic simulations.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"296 ","pages":"Article 110316"},"PeriodicalIF":7.1,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Tailoring asymmetry for anisotropic friction in kirigami metamaterial skins with pop-up folding hinges 具有弹出式折叠铰链的基里伽米超材料表皮中各向异性摩擦的剪裁不对称

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-26 DOI: 10.1016/j.ijmecsci.2025.110258

Hamid Reza Tohidvand , Alexis White , Ali Khosravi , Paolo Celli

{"title":"Tailoring asymmetry for anisotropic friction in kirigami metamaterial skins with pop-up folding hinges","authors":"Hamid Reza Tohidvand , Alexis White , Ali Khosravi , Paolo Celli","doi":"10.1016/j.ijmecsci.2025.110258","DOIUrl":"10.1016/j.ijmecsci.2025.110258","url":null,"abstract":"<div><div>Kirigami metamaterial sheets and tubes, owing to their capacity to undergo large elastic deformations while developing three-dimensional surface textures, have enormous potential as skins for soft robots. Here, we propose to use kirigami skins with folding hinges in this same context. These recently-introduced kirigami feature counter-rotating panels connected by pop-up folding hinges. So far, researchers have only explored auxetic and highly-symmetric versions of such patterns. Yet, some of these attributes have to be relaxed in order to explore their full potential as robotic skins. Thus, we parameterize these patterns and relax symmetry constraints, with the goal of using this same platform to obtain a wide range of shape-morphing behaviors. We derive kinematic formulas to explore the vast symmetry-enabled design space. We then use numerical simulations and experiments to validate the kinematic predictions and to explore the morphing mechanics of tubular skins. Finally, via experiments, we provide preliminary evidence of the anisotropic friction enabled by patterns with asymmetric pop-ups. We therefore demonstrate that it is possible to tailor parameters in kirigami with folding hinges to obtain skins that globally expand or contract due to axial elongation, and that present asymmetric pop-ups that yield anisotropic friction — the most desired attribute for one-way locomotion of soft robots.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"296 ","pages":"Article 110258"},"PeriodicalIF":7.1,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 comprehensive investigation on the shear behavior of UHPFRCNC interface UHPFRCNC界面剪切性能综合研究

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-25 DOI: 10.1016/j.ijmecsci.2025.110309

Hanming Zhang , Jianchun Xiao , Jing Chen , Zhuoqun Liu , Cong Liu , Tianjie Hu , Zhengrong Zhou

{"title":"A comprehensive investigation on the shear behavior of UHPFRCNC interface","authors":"Hanming Zhang , Jianchun Xiao , Jing Chen , Zhuoqun Liu , Cong Liu , Tianjie Hu , Zhengrong Zhou","doi":"10.1016/j.ijmecsci.2025.110309","DOIUrl":"10.1016/j.ijmecsci.2025.110309","url":null,"abstract":"<div><div>Ultra-high-performance fiber-reinforced concrete (UHPFRC)-normal concrete (NC) composite members reinforced with fiber-reinforced polymer (FRP) bars exhibit significant application potential in harsh environments due to their superior corrosion resistance. However, the UHPFRC<img>NC interface has been widely recognized as the weak link in these composite members, potentially compromising structural integrity. Consequently, this study comprehensively investigated the effects of FRP stirrups and concrete casting delay (CCD) on the interfacial shear behavior under direct shear mechanisms through push-off tests. Digital image correlation (DIC) and computed tomography (CT) techniques were employed to further elucidate the dowel action of FRP stirrups and the influence mechanism of CCD. The results demonstrated that both FRP stirrup configuration and CCD significantly affected the failure mode, push-off load-interface slip relationship, shear strength, ductility, and interface separation of single-sided shear specimens. The dowel action of FRP stirrups contributed to improving interface stress transfer. Reducing stirrup spacing and increasing stirrup diameter enhanced the separation confinement and shear capacity of the UHPFRC<img>NC interface. As CCD increased, interfacial porosity progressively rose, becoming the dominant factor degrading interfacial shear performance. Conversely, reduced CCD facilitates steel fiber penetration across the casting interface, thereby enhancing interfacial shear strength and ductility. Leveraging the plastic upper limit theorem, a prediction model for UHPFRC<img>NC interface shear capacity incorporating the effects of FRP stirrup and CCD was proposed. Compared with existing models, the proposed model effectively predicted push-off test results with superior accuracy.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"296 ","pages":"Article 110309"},"PeriodicalIF":7.1,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Multiparameter vibration isolator with magnetic inerter and GER-control 多参数隔振器与磁干涉和ger控制

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-25 DOI: 10.1016/j.ijmecsci.2025.110307

Jun Luo , Xiaoyu Deng , Zhi Sun, Jinglei Zhao, Shujin Yuan, Xijun Cao, Ruqing Bai, Chunlin Zhang, Yibo Luo, Huayan Pu

{"title":"Multiparameter vibration isolator with magnetic inerter and GER-control","authors":"Jun Luo , Xiaoyu Deng , Zhi Sun, Jinglei Zhao, Shujin Yuan, Xijun Cao, Ruqing Bai, Chunlin Zhang, Yibo Luo, Huayan Pu","doi":"10.1016/j.ijmecsci.2025.110307","DOIUrl":"10.1016/j.ijmecsci.2025.110307","url":null,"abstract":"<div><div>Traditional passive vibration isolators (VIs) suppress resonance by increasing damping or introducing an inerter. However, they suffer from degraded high-frequency isolation owing to the water bed effect. This paper presents a multiparameter VI with magnetic inerter-based damping (MID) that achieves passive sky-hook damping through the purely mechanical configuration of a magnetic lead screw (MLS). The MLS serves simultaneously as a nonlinear inerter and a frequency-dependent damper, producing experimentally validated damping characteristics with 43.0 % lower peak transmissibility (10.78 dB) compared to conventional two-parameter VIs (18.91 dB), while preserving a −40 dB/dec high-frequency roll-off. Theoretical modelling quantitatively explains these frequency-dependent damping features. Furthermore, a frequency-adaptive control method that enables real-time co-regulation of damping and stiffness via a giant electrorheological (GER) fluid is developed, yielding a 19.41 % additional low-frequency isolation improvement over passive operation. Experimental validation confirmed a 78.31 % isolation efficiency enhancement at the natural frequency of the system with complete suppression of high-frequency vibration amplification compared with conventional two-parameter VIs. Thus, this study establishes a novel multiparameter VI by synergistically integrating a magnetic inerter with GER smart materials.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"296 ","pages":"Article 110307"},"PeriodicalIF":7.1,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Blood–brain mechanics: How brain tissue responds to pulsatile blood flow dynamics 血脑力学：脑组织对脉动血流动力学的反应

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-25 DOI: 10.1016/j.ijmecsci.2025.110278

Xiaoyuan Gao , Tian Yuan , Zisheng Liao , Yi Yang , Weiguo Wu , Wenbo Zhan , Daniele Dini

{"title":"Blood–brain mechanics: How brain tissue responds to pulsatile blood flow dynamics","authors":"Xiaoyuan Gao , Tian Yuan , Zisheng Liao , Yi Yang , Weiguo Wu , Wenbo Zhan , Daniele Dini","doi":"10.1016/j.ijmecsci.2025.110278","DOIUrl":"10.1016/j.ijmecsci.2025.110278","url":null,"abstract":"<div><div>Highly coupled interactions between nonlinear fluids and soft matter are ubiquitous in nature and critical for various applications. A prime example is the blood–brain interaction, where the pulsatile non-Newtonian blood flow deforms the extremely soft and highly nonlinear human brain tissues. Understanding this dynamic is vital, as it can provide critical insights into neurological issues and their underlying mechanisms. However, experimentally investigating these interactions is less feasible due to the limited access to the human brain. Although advanced computational models have been developed to simulate blood flow in the human brain, a comprehensive model that can reconcile the various nonlinear components in a fully coupled framework to capture the specific interactions between the blood flow, vessel movement, and brain tissue dynamics remains elusive.</div><div>To explore the mechanisms governing blood–brain interactions, we have developed an innovative finite element model that seamlessly integrates the interactions between non-Newtonian blood flow, hyperelastic blood vessels, and hyper-viscoelastic brain tissue. This model is enhanced by a hyper-viscoelastic model based on compression–relaxation tests of human brain tissues, which can precisely capture their time-dependent nonlinear behaviour. Comprehensive simulations based on this model illustrate how pulsatile blood flow significantly deforms brain tissues under various scenarios. This study not only offers new possibilities for understanding the intimate links between brain function and its biomechanics, but also provides a novel modelling framework to solve complex interactions between nonlinear fluids and soft matter across several other scientific disciplines and fields.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"296 ","pages":"Article 110278"},"PeriodicalIF":7.1,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Constrained vibration of butterfly-shaped honeycomb sandwich panels under base motion 基础运动下蝴蝶形蜂窝夹层板的约束振动

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-24 DOI: 10.1016/j.ijmecsci.2025.110267

Liu Rong , Zhong Yifeng , Poh Leong Hien , Tang Yuxin , Li Wei

{"title":"Constrained vibration of butterfly-shaped honeycomb sandwich panels under base motion","authors":"Liu Rong , Zhong Yifeng , Poh Leong Hien , Tang Yuxin , Li Wei","doi":"10.1016/j.ijmecsci.2025.110267","DOIUrl":"10.1016/j.ijmecsci.2025.110267","url":null,"abstract":"<div><div>Periodic base motion at the edges of panels can induce significant vibrations, impacting stability, safety, and stealth performance. This study examines the vibration characteristics of butterfly-shaped auxetic honeycomb sandwich panels (BF-HSP) under base motion. Through experiments and 3D FE modeling (3D-FEM), the accuracy of the 2D equivalent plate model (2D-EPM), based on the variational asymptotic method, is validated in free modal analysis. Further analysis using 3D-FEM and 2D-EPM evaluates the constrained modes and local responses of BF-HSP under periodic base motions. Compared to 3D-FEM simulations, the equivalent model enhances computational efficiency, requiring only 1.04% of the computation time, while maintaining high accuracy in predicting constrained vibration characteristics, with a maximum error under 10%. Compared to arc-shaped and re-entrant honeycomb sandwich panels (AR-HSP and RE-HSP), the proposed BF-HSP excel in suppressing low-frequency resonance and reducing resonance amplitude by up to 6.1%. Local field analysis reveals that the butterfly-shaped core of BF-HSP effectively mitigates dynamic stress concentration, especially along the inclined core struts, resulting in a 4.1% reduction in local dynamic stress compared to AR-HSPs and a 32.4% reduction compared to RE-HSPs. This study offers a highly efficient and reliable solution for the design of auxetic honeycomb sandwich panels, enhancing vibration damping performance and structural stability while mitigating the adverse effects of vibration resonance.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"296 ","pages":"Article 110267"},"PeriodicalIF":7.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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