International Journal of Mechanical Sciences最新文献_第7页

Q-factor enhancement in micro hemispherical resonators by laser welding 激光焊接增强微半球形谐振腔的q因子

IF 9.4 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-09-17 DOI: 10.1016/j.ijmecsci.2025.110853

Dunxiang Jian, Yan Shi, Anye Su, Xiang Xi, Dingbang Xiao, Xuezhong Wu

{"title":"Q-factor enhancement in micro hemispherical resonators by laser welding","authors":"Dunxiang Jian, Yan Shi, Anye Su, Xiang Xi, Dingbang Xiao, Xuezhong Wu","doi":"10.1016/j.ijmecsci.2025.110853","DOIUrl":"10.1016/j.ijmecsci.2025.110853","url":null,"abstract":"<div><div>The quality factor (Q-factor) is a pivotal metric for affecting the precision and performance of micro hemispherical resonator gyroscopes. Currently, the primary impediment to enhancing the Q-factor is anchor loss, which is significantly affected by interlayer between the micro hemispherical resonator and substrate. Therefore, this paper proposes an innovative interlayer-free bonding technique based on femtosecond laser welding for integrating resonators with substrates. Firstly, an anchor loss simulation model was established to analyze the influence mechanisms of eccentric mass and interlayers on Q-factor. This analysis reveals that interlayer-free bonding significantly mitigates energy dissipation caused by eccentric mass. Secondly, a material temperature evolution model was constructed based on the interaction mechanism between femtosecond laser and fused silica, which reveals the influence of laser parameters on weld pool morphology. Subsequently, a laser welding platform was established and optimal process parameters were obtained via single-factor experiments. Finally, the experimental results show that the micro hemispherical resonator bonded by femtosecond laser welding achieves a maximum Q-factor of 11.77 million, representing a 37 % improvement compared to the conventional conductive adhesive bonding method. Notably, a decay time of 639.04 s was achieved, marking the longest decay time reported to date for micro hemispherical resonators. This research results validate the effectiveness of femtosecond laser welding in enhancing Q-factor, holding significant implications for manufacturing high-performance micro hemispherical resonator gyroscopes.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"306 ","pages":"Article 110853"},"PeriodicalIF":9.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103413","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

New material removal volume and roughness model of polished stainless-steel 新型抛光不锈钢材料去除率及粗糙度模型

IF 9.4 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-09-17 DOI: 10.1016/j.ijmecsci.2025.110844

Hongyang Wang , Chuanzhen Huang , Zhenyu Shi , Zhen Wang , Longhua Xu , Shuiquan Huang , Yipeng Li , Meina Qu , Zhengkai Xu , Dijia Zhang , Baosu Guo , Tianye Jin , Hanlian Liu , Dun Liu , Peng Yao

{"title":"New material removal volume and roughness model of polished stainless-steel","authors":"Hongyang Wang , Chuanzhen Huang , Zhenyu Shi , Zhen Wang , Longhua Xu , Shuiquan Huang , Yipeng Li , Meina Qu , Zhengkai Xu , Dijia Zhang , Baosu Guo , Tianye Jin , Hanlian Liu , Dun Liu , Peng Yao","doi":"10.1016/j.ijmecsci.2025.110844","DOIUrl":"10.1016/j.ijmecsci.2025.110844","url":null,"abstract":"<div><div>Pre-mixed abrasive water jet (PAWJ) technology has been widely applied in surface machining and polishing. However, the traditional material removal volume and roughness model for stainless steel in PAWJ is empirical or semi-empirical with a significant error, and there is a lack of a theoretical model that conforms to actual processing conditions. Therefore, this paper develops a novel model for material removal volume and roughness, considering the effects of the elastic loading, elastic unloading, and plastic loading stages on the impact mechanics. The impact behavior of a single particle is analyzed using kinetic theory and Hertzian contact mechanics, and the condition for effective abrasive particles is established. Computational Fluid Dynamics (CFD) simulation is employed to obtain detailed information on particle impact at different process parameters, which is used to identify effective abrasive particles and serve as initial input for the model. The proposed model is verified through a series of polishing experiments, and the influence of process parameters on surface microstructures is analyzed by integrating CFD simulation results. Theoretical surface roughness agrees well with experimental results, with a maximum relative error of 17.49%. The error stems from two sources: the assumption of standard spherical particles, which underestimates impact depth and roughness due to the smaller contact area of actual angular particles; and residual material accumulates around the machining marks following PAWJ, in contrast to the assumption of complete material removal in modeling, leading to larger experimental results than theoretical ones. This paper provides an in-depth understanding of micro-scale material removal in PAWJ and a theoretical foundation for process optimization.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"306 ","pages":"Article 110844"},"PeriodicalIF":9.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145268939","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

Effect of Al content on the properties of Ti/Al3Ti/Al laminates Al含量对Ti/Al3Ti/Al层压板性能的影响

IF 9.4 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-09-17 DOI: 10.1016/j.ijmecsci.2025.110852

Liya Tian , Jiucheng Zhao , Xudong Yin , Xiangyu Zong , Zerui Zhao , Ying Ai , Shizhong Zhang

{"title":"Effect of Al content on the properties of Ti/Al3Ti/Al laminates","authors":"Liya Tian , Jiucheng Zhao , Xudong Yin , Xiangyu Zong , Zerui Zhao , Ying Ai , Shizhong Zhang","doi":"10.1016/j.ijmecsci.2025.110852","DOIUrl":"10.1016/j.ijmecsci.2025.110852","url":null,"abstract":"<div><div>The fundamental relationship between residual aluminum volume fractions (RAVFs) and their effects on mechanical properties, local strain distribution, and microcrack formation patterns in Ti/Al<sub>3</sub>Ti/Al laminated metal composites (LMCs) remains unclear, which impedes progress in designing high-performance LMCs. This study designed a series of Ti/Al<sub>3</sub>Ti/Al LMCs with different RAVFs by adjusting the hot-pressing temperature. By combining high-resolution digital image correlation (HR-DIC) with in-situ X-ray micro-computed tomography (μCT), the mechanism by which RAVFs affect the mechanical properties, strain development, and crack initiation and propagation of LMCs has been clarified. The study revealed that the tensile strength initially increases and then decreases, culminating in a peak of 641 MPa at 25 % of RAVFs. However, the elongation exhibits a monotonic decrease from 3.5 % to 1.1 % as the concentration of RAVFs declines. In addition, it was found that as RAVFs decrease, the longitudinal strain localization in Al<sub>3</sub>Ti becomes more intense and the uniformity of transverse strain within each layer worsens. This causes the fracture mode of LMCs to shift from mainly interface delamination to primarily fracture of the intermetallic phase. This study offers a novel perspective for optimizing the mechanical properties of LMCs, promising to provide theoretical support and practical guidance for developing high-performance composites.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"306 ","pages":"Article 110852"},"PeriodicalIF":9.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159338","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

Benchmarking effective moduli in porous elastoplastic materials 多孔弹塑性材料有效模量的基准测试

IF 9.4 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-09-17 DOI: 10.1016/j.ijmecsci.2025.110854

M․ Ya. Yakovlev , V.M. Yarushina , I.D. Bystrov , L.S. Nikitin , Yu․ Yu. Podladchikov

{"title":"Benchmarking effective moduli in porous elastoplastic materials","authors":"M․ Ya. Yakovlev , V.M. Yarushina , I.D. Bystrov , L.S. Nikitin , Yu․ Yu. Podladchikov","doi":"10.1016/j.ijmecsci.2025.110854","DOIUrl":"10.1016/j.ijmecsci.2025.110854","url":null,"abstract":"<div><div>Predicting the mechanical behavior of porous elastoplastic materials under stress is critical in fields such as geomechanics, energy storage, and impact engineering. However, most existing analytical models are limited to linear elastic or viscous matrices and fail to capture the effects of plastic yielding and shear loading. In this study, we derive new closed-form expressions for the effective shear modulus of porous elastoplastic solids, extending prior work on effective bulk modulus under non-hydrostatic loading. We show that plastic yielding leads to a coupling between shear and volumetric responses - specifically, a dependence of the effective bulk modulus on shear stress and of the shear modulus on mean pressure. This coupling results in shear-enhanced compaction and stress-induced anisotropy in initially isotropic materials. The analytical solutions for the effective bulk and shear moduli are benchmarked against high-resolution numerical simulations of representative volume elements containing multiple interacting voids. Results demonstrate that the model remains accurate even at porosities up to 20 %, well beyond its formal assumptions. These findings provide a physically grounded, computationally efficient approach to capturing key nonlinear effects in porous elastoplastic media.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"306 ","pages":"Article 110854"},"PeriodicalIF":9.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159341","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 novel specimen for mixed-mode fracture testing of anisotropic rocks 一种用于各向异性岩石混合模式断裂试验的新型试样

IF 9.4 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-09-17 DOI: 10.1016/j.ijmecsci.2025.110846

Yu Zhao , Qian Cao , Shuang Dang , Jaroon Rungamornrat , Hoang-Tien Pham , Wei Tang

{"title":"A novel specimen for mixed-mode fracture testing of anisotropic rocks","authors":"Yu Zhao , Qian Cao , Shuang Dang , Jaroon Rungamornrat , Hoang-Tien Pham , Wei Tang","doi":"10.1016/j.ijmecsci.2025.110846","DOIUrl":"10.1016/j.ijmecsci.2025.110846","url":null,"abstract":"<div><div>This study introduces a novel Semi-Circular Bend (SCB) specimen to overcome the inherent coupling between geometric constraints and material response in traditional fracture tests on layered rocks. The novel design fixes both the support span and bedding orientation while independently varying the prefabricated crack inclination angle, enabling controlled mixed-mode I/II fracture conditions. This approach enables, for the first time, a precise investigation of crack trajectory influence under constant geometric constraints. A quantitative analysis was performed by combining parametric finite element analysis and three-point bending experiments on slate samples. The results demonstrate that the fracture toughness of the layered rock exhibits a nonlinear evolution with the increasing crack angle β. The dominant fracture mechanism shifts from tensile to shear failure as β increases. While existing anisotropic fracture criteria like the Maximum Tangential Stress (MTS) and Minimum Strain Energy Density (SED) are accurate under tensile loading, they significantly underestimate the material's toughness in shear-dominated regimes. We further propose and validate a Tangential Strain Energy Density (TSED) criterion, which shows superior accuracy, especially under Mode II conditions. This work provides a robust experimental-theoretical framework for assessing fracture behavior in bedded rock masses with natural cracks, with direct implications for tunnel and slope stability.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"306 ","pages":"Article 110846"},"PeriodicalIF":9.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120892","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

Small punch creep performance of additive manufactured nickel-based GH3536 添加剂制备镍基GH3536的小冲孔蠕变性能

IF 9.4 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-09-17 DOI: 10.1016/j.ijmecsci.2025.110850

Xun Wang , Lianyong Xu , Bianyang Wu , Lei Zhao , Yongdian Han , Quanwei Sun

{"title":"Small punch creep performance of additive manufactured nickel-based GH3536","authors":"Xun Wang , Lianyong Xu , Bianyang Wu , Lei Zhao , Yongdian Han , Quanwei Sun","doi":"10.1016/j.ijmecsci.2025.110850","DOIUrl":"10.1016/j.ijmecsci.2025.110850","url":null,"abstract":"<div><div>To quantify the effect of different heat treatment strategies (HTS) on the creep performance (CP) of additive manufactured (AM) Nickel-based GH3536, small punch creep (SPC) tests were employed. The microstructure characteristics after heat treatment (HT) were observed, and the surface defect characteristics of SPC specimens were visualized and parameterized. The sensitivity of HTS parameters to microstructure characteristics and defect characteristics was analyzed by various mathematical and statistical methods. SPC stresses and damage were analyzed for AM GH3536 alloy, and creep deformation modeling based on mean grain size (MGS) was conducted. The results of the Norton creep (NC) model, the Larson-Miller (LM) model, the mechanical work (MW) model, and the modified Monkman - Grant (MMG) model for predicting the SPC creep life of AM GH3536 containing defects were comparatively examined. The HTS-microstructure/defects-creep life prediction model was established by linking the HTS, microstructure characteristics and defect characteristics parameters, showing good prediction accuracy and realizing the prediction of SPC life of defective-containing AM alloys.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"306 ","pages":"Article 110850"},"PeriodicalIF":9.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120897","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

Ultra-low and ultra-broadband meta-porous liner under grazing flow 掠流作用下超低超宽带介孔衬板

IF 9.4 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-09-17 DOI: 10.1016/j.ijmecsci.2025.110849

Shuaixing Wang , Yong Xiao , Dazuo Wang , Yanghua Hu , Jihong Wen

{"title":"Ultra-low and ultra-broadband meta-porous liner under grazing flow","authors":"Shuaixing Wang , Yong Xiao , Dazuo Wang , Yanghua Hu , Jihong Wen","doi":"10.1016/j.ijmecsci.2025.110849","DOIUrl":"10.1016/j.ijmecsci.2025.110849","url":null,"abstract":"<div><div>Acoustic meta-liners have received increasing attention in the field of noise control. However, it is still a challenge to design a simple meta-liner (with a few subunits) to achieve broadband low-frequency sound attenuation under wide-speed range grazing flow. This work proposes a type of meta-porous liner (MPL) consisting of perforated panels and coiled-up spaces filled with porous material containing wedge-like impedance modulation channels. An analytical method for predicting acoustic impedance considering fluid-acoustic coupling effects of the MPL is developed. Besides, by employing the analytically predicted acoustic impedance, a finite element model for predicting sound attenuation performance of the MPL under grazing flow is established. Then, sound attenuation performance and mechanism of the MPL are investigated. The strong impedance modulation capability and the acoustic stability under grazing flow together contribute to the efficient sound attenuation of the MPL under wide-speed range grazing flow. A flow tube experiment is conducted to verify the effectiveness of the modeling method and the sound attenuation performance. An MPL specimen (400 mm thickness) is fabricated and measured. It can achieve efficient sound attenuation in the ultra-low and ultra-broadband frequency range of 50‒3000 Hz under grazing flow within Mach number of 0‒0.3. Subsequently, the effects of geometrical and material parameters on acoustic characteristics are analyzed. To meet diverse sound attenuation requirements, a series of MPLs with various thicknesses ranging from 50 mm to 400 mm are designed. They can achieve efficient sound attenuation under wide-speed range grazing flow over ultra-broadband frequency range covering frequencies below 500 Hz or even below 100 Hz. Since the proposed MPLs have simple constructions yet ultra-low and ultra-broadband sound attenuation performance, they have wide application prospects in noise control engineering under grazing flow.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"306 ","pages":"Article 110849"},"PeriodicalIF":9.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120895","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 V-shaped galloping piezoelectric energy harvester exploiting bending and torsional modes 一种利用弯曲和扭转模式的v形驰动压电能量采集器

IF 9.4 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-09-16 DOI: 10.1016/j.ijmecsci.2025.110841

Cuipeng Xia , Lihua Tang , Tianle Meng , Junlei Wang , Peilun Yin , Dong Zhang , Zifan Li , Kean C. Aw

{"title":"A V-shaped galloping piezoelectric energy harvester exploiting bending and torsional modes","authors":"Cuipeng Xia , Lihua Tang , Tianle Meng , Junlei Wang , Peilun Yin , Dong Zhang , Zifan Li , Kean C. Aw","doi":"10.1016/j.ijmecsci.2025.110841","DOIUrl":"10.1016/j.ijmecsci.2025.110841","url":null,"abstract":"<div><div>Traditional straight beam galloping-based energy harvesters can only operate effectively when the wind comes from a specific direction, which reduces their efficiency in variable natural conditions. This research proposes a V-shaped galloping-based piezoelectric energy harvester (GPEH) and the triggering of its multiple modes helps broaden its effective wind direction range. A theoretical model is established using the global modal method (GMM) to characterize its bending and torsional modes and verified by finite element analysis (FEA) in terms of natural frequencies and mode shapes and further validated through wind tunnel testing. Subsequently, the output performance of the proposed V-shaped GPEH is further tested and it is demonstrated to be able to effectively harvest wind energy from multiple incident wind directions through the activation of bending and torsional modes. Moreover, both theoretical and experimental results demonstrate that higher electrical voltage and power output are achieved when galloping is triggered in the 2nd order bending mode, compared to other modes. The design and modeling of the developed V-shaped galloping-based energy harvester present an effective strategy for capturing wind flow energy in natural environments characterized by uncertain wind conditions.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"306 ","pages":"Article 110841"},"PeriodicalIF":9.4,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103558","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

External-pipe-climbing piezoelectric actuator with high climbing/towing capability and untethered movement 外攀管式压电驱动器，具有高攀爬/拖曳能力和无系绳运动

IF 9.4 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-09-16 DOI: 10.1016/j.ijmecsci.2025.110840

Zhaochun Ding , Xiang Li , Jiang Wu , Jinshuo Liu , Lipeng Wang , Yu Tian , Yanhu Zhang , Xuewen Rong , Yibin Li

{"title":"External-pipe-climbing piezoelectric actuator with high climbing/towing capability and untethered movement","authors":"Zhaochun Ding , Xiang Li , Jiang Wu , Jinshuo Liu , Lipeng Wang , Yu Tian , Yanhu Zhang , Xuewen Rong , Yibin Li","doi":"10.1016/j.ijmecsci.2025.110840","DOIUrl":"10.1016/j.ijmecsci.2025.110840","url":null,"abstract":"<div><div>To accomplish high climbing/towing capability and untethered movement, a miniature external-pipe-climbing piezoelectric actuator (MEPCPA) is developed by integrating a pair of wing-shaped transducers driven by piezoelectric stack plates and an onboard circuit. Here, the transducers provide the climbing and clamping functions with the driving feet and the spring, respectively; these interestingly imitate the propelling and hugging functions of the sloth’s lower and upper limbs. The micro controller, boost module, and transistors arranged in the H-bridge shape form the minimum system of a lightweight onboard circuit. To verify our proposal, first, by constructing a vibration model, the transducer was designed to enhance the driving force without excessively increasing the weight. Meanwhile, the friction coefficient was modified by considering the surface roughness to predict the climbing/towing performance. Then, a prototype whose mechanical part had the size of 52 × 35 × 72 mm<sup>3</sup> and the weight of 20.5 g was fabricated for performance assessment. In a tethered manner, the MEPCPA climbed up the glass tube vertically, towed the maximal weight of 120 g (equal to 5.9 times the mechanical part’s weight), and yielded the maximal speed of 103.8 mm/s. Installed with a 12-V 300-mAh battery, the MEPCPA successfully climbed up the tube having the tilting angle of 45° with the ground and it produced the maximal towing weight, the maximal climbing speed, and the minimal stepwise displacement of 20 g, 18 mm/s, and 0.36 μm, respectively, at the tilting angle of 30° To the best of our knowledge, this study is an initial report regarding piezoelectric actuators climbable in an untethered manner, and provides fundamental technique for designing miniature piezoelectric actuators potentially applicable to narrow environments particularly lacking external power source.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"306 ","pages":"Article 110840"},"PeriodicalIF":9.4,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103415","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

Microstructure-mechanical properties modeling for a novel surface milling-burnishing process 一种新型表面铣削-抛光工艺的微观组织-力学性能建模

IF 9.4 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-09-16 DOI: 10.1016/j.ijmecsci.2025.110839

Ling Jin , Guang Chen , Jiale Wang , Zhiyi Wang , Zhuoyang Wu , Qirui Zhang , Jiangting Wu , Bingchen Duan

{"title":"Microstructure-mechanical properties modeling for a novel surface milling-burnishing process","authors":"Ling Jin , Guang Chen , Jiale Wang , Zhiyi Wang , Zhuoyang Wu , Qirui Zhang , Jiangting Wu , Bingchen Duan","doi":"10.1016/j.ijmecsci.2025.110839","DOIUrl":"10.1016/j.ijmecsci.2025.110839","url":null,"abstract":"<div><div>A novel surface milling-burnishing process (SMBP) was proposed for surface strengthening of metals. The microstructural evolution, nano-hardness, and macro-tensile properties of SMBP-treated Ti-6Al-4V alloy were investigated through experimental and finite element (FE) modeling combined methods. A user-defined subroutine combining JCM-ms plasticity model and modified JMAK dynamic recrystallization model was proposed to predict grain refinement, while the Hall-Petch theory and a nanoindentation hardness-yield strength relationship (<em>HN</em> = 4.6<em>σ</em><sub>y</sub>) were established to model the surface nanoindentation hardness. The simulated distributions of grain refinement layer (GRL), plastic flow angle, grain size, and nanoindentation hardness exhibit good consistency with the experimental SEM, EBSD, and nanoindentation measurements. The SMBP-treated sample generates an ultrafine-grained surface layer (40–50 µm thick, with grain size <1 µm), achieving a peak hardness of 5.8 GPa which is 38 % higher than that of untreated material. SMBP enables active control of stress states (tension or compression) along the feed-direction through tool movement, while normal-direction stress states remain consistent with varying speeds. Moreover, microstructure-dependent FE simulations of tensile testing were proposed. The microstructural evolution in both GRL and plastic deformation layer (PDL) enhanced the macro-tensile strength of SMBP-treated samples through combined grain refinement and dislocation strengthening mechanisms. Compared to the unstrengthened sample, SMBP-treated specimens exhibited 6.1 %, 8.1 %, and 8.1 % improvements in tensile strength, yield strength, and elongation, respectively. This work establishes a novel SMBP for surface strengthening of Ti-6Al-4V alloy, along with a novel theoretical modeling approach for predicting microstructure and mechanical behaviors.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"306 ","pages":"Article 110839"},"PeriodicalIF":9.4,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159325","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