International Journal of Mechanical Sciences最新文献_第2页

Miura-origami inspired quasi-zero stiffness low-frequency vibration isolator 三浦折纸启发的准零刚度低频隔振器

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-17 DOI: 10.1016/j.ijmecsci.2025.110283

Xiaodong Hua , Shenlong Wang , Jincheng Zhang , Guyue Jiao , Kai Wang

{"title":"Miura-origami inspired quasi-zero stiffness low-frequency vibration isolator","authors":"Xiaodong Hua , Shenlong Wang , Jincheng Zhang , Guyue Jiao , Kai Wang","doi":"10.1016/j.ijmecsci.2025.110283","DOIUrl":"10.1016/j.ijmecsci.2025.110283","url":null,"abstract":"<div><div>Recent advances in nonlinear vibration isolation have revealed limitations in conventional linear isolators, yet existing nonlinear designs often lack adaptability to varying loads while maintaining effective low-frequency performance. To address these challenges, this paper introduces a novel linkage-type Miura-origami (LMO) vibration isolator incorporating quasi-zero stiffness (QZS) characteristics through an integrated origami structure and linear spring combination. The proposed system demonstrates unique parameter optimization capabilities that enable consistent QZS properties across multiple load conditions while preserving nonlinear stiffness characteristics. Analytical investigations employing the averaging method reveal superior vibration isolation performance, with the LMO system exhibiting broader isolation bandwidth and significantly reduce resonance peaks compared to equivalent linear isolators. Experimental validation through comprehensive dynamic testing under sweep frequency, harmonic, and random excitations confirms effective vibration attenuation above 1.6 Hz, with complete resonance peak suppression and 90 % root mean square reduction in the 1–25 Hz frequency band. These findings establish the LMO isolator as a promising solution for practical low-frequency vibration isolation applications, particularly in electromechanical systems where operational demands require both performance stability and load adaptability.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"295 ","pages":"Article 110283"},"PeriodicalIF":7.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854897","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-sensitive low-cycle fatigue in a nickel-base single crystal superalloy: Constitutive modeling and life assessment 镍基单晶高温合金的显微组织敏感低周疲劳：本构建模和寿命评估

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-17 DOI: 10.1016/j.ijmecsci.2025.110235

Cheng Luo , Huanbo Weng , Xixi Yang , Huang Yuan

{"title":"Microstructure-sensitive low-cycle fatigue in a nickel-base single crystal superalloy: Constitutive modeling and life assessment","authors":"Cheng Luo , Huanbo Weng , Xixi Yang , Huang Yuan","doi":"10.1016/j.ijmecsci.2025.110235","DOIUrl":"10.1016/j.ijmecsci.2025.110235","url":null,"abstract":"<div><div>Mechanical properties of nickel-base single crystal superalloys undergo degradation during service due to microstructural changes like coarsening and rafting. The low-cycle fatigue performance along [001] crystal orientation in the coarsened and rafted DD6 alloys was studied by experiments and theoretical analysis. Fatigue tests across various microstructure states with different strain ratios at elevated temperatures revealed substantial life reduction. A novel tensorial representation for microstructure was proposed and demonstrated unique advantages over conventionally used scalar parameters. For the first time, the effects of coarsening and rafting were decoupled through the independent components of fabric tensors of <span><math><mi>γ</mi></math></span>-matrix and <span><math><msup><mrow><mi>γ</mi></mrow><mrow><mo>′</mo></mrow></msup></math></span>-precipitate phases. A microstructure-sensitive crystal plasticity-based constitutive model and a fatigue life prediction model were developed for mechanical behaviors along [001] crystal orientation using fabric tensors. The stress drop and life reduction in the coarsened and rafted alloys were well modeled. Both the accuracy and conservativeness of the life prediction results were significantly improved. The applications of fabric tensors in constitutive modeling and fatigue assessment show the potential to offer enhanced insights and predictive capabilities, enabling more comprehensive evaluations of structural integrity in various operational conditions and environments.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"295 ","pages":"Article 110235"},"PeriodicalIF":7.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851409","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

Constitutive optimization modeling of magnetorheological dampers under multiple influencing factors 多影响因素下磁流变阻尼器本构优化建模

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-17 DOI: 10.1016/j.ijmecsci.2025.110284

Jiahao Li , Tao Hu , Xinyu Lian , Lan Jiang , Liyan Pan , Huaxia Deng , Shuaishuai Sun , Xinglong Gong

{"title":"Constitutive optimization modeling of magnetorheological dampers under multiple influencing factors","authors":"Jiahao Li , Tao Hu , Xinyu Lian , Lan Jiang , Liyan Pan , Huaxia Deng , Shuaishuai Sun , Xinglong Gong","doi":"10.1016/j.ijmecsci.2025.110284","DOIUrl":"10.1016/j.ijmecsci.2025.110284","url":null,"abstract":"<div><div>Accurate constitutive modeling of magnetorheological dampers (MRDs) under multi-factor coupling remains challenging due to the inherent trade-off between experimental cost and parameter identification accuracy under multiple influencing factors. To address these limitations, this study proposes a pioneering Hippopotamus Optimization (HO) with Nelder–Mead Simplex (NMS)-Stacked Transformer (HNMS-ST) framework, which innovatively integrates three synergistic components to enhance the precision in characterizing constitutive parameters of the proposed Biplastic–Bingham (BB) model with local loss: (1) a Transformer-based data enhancement model that replenishes synthetic training data, effectively reducing experimental costs; (2) a constrained HO combined with NMS strategy and outlier penalty mechanism, which resolves parameter identification instability in the BB model under multi-factor coupling; and (3) a dynamic parameter mapping model using Transformer architecture to correlate optimized constitutive parameters with key influencing variables, including magnetic induction derived from finite element analysis (FEA) and temperature obtained by measurement. Extensive experimental verifications underscore the superior predictive accuracy and adaptability of the HNMS-ST BB model under multiple influencing factors compared to traditional methods. The proposed method resolves the parameter characterization challenges of piecewise constitutive models, thereby enabling high-precision modeling of MRD while reducing experimental costs.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"295 ","pages":"Article 110284"},"PeriodicalIF":7.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854886","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 Mechanical Metamaterial for Energy Absorption using Carbon Fiber Composite 利用碳纤维复合材料制备能量吸收机械超材料

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-16 DOI: 10.1016/j.ijmecsci.2025.110282

Min Sun , Zhiwei Qiu , Qiang Chen , Hongshuai Lei , Zheng Zhang , Yi Song , Shaofei Jiang , Jiayang Zhao , Haonan Fu

{"title":"A Mechanical Metamaterial for Energy Absorption using Carbon Fiber Composite","authors":"Min Sun , Zhiwei Qiu , Qiang Chen , Hongshuai Lei , Zheng Zhang , Yi Song , Shaofei Jiang , Jiayang Zhao , Haonan Fu","doi":"10.1016/j.ijmecsci.2025.110282","DOIUrl":"10.1016/j.ijmecsci.2025.110282","url":null,"abstract":"<div><div>Mechanical metamaterials are usually prepared using additive manufacturing process, which limits the dynamic tuning of their mechanical properties after preparation. In this study, a mechanical metamaterial was designed using carbon fiber composites, and prepared by hot-pressing process as well as assembled by discrete assembly method. By leveraging the inherent anisotropic properties of the material, a single structure achieved both multi-stable and mono-stable characteristics. A torsion inhibition method based on modular design was employed to inhibit the overall torsion angle of the structure and improve the stability of structures under compression. The mechanical properties of structure under compression and impact were simulated using the finite element method. The simulation results are in good agreement with the experiment data, indicating that the torsion inhibition method effectively reduced the torsion angle. The effects of drilling spacing <em>l</em>, ply angle <em>α</em>, and helix radius <em>r</em> on the mechanical properties were also been studied. Under the multi-stable characteristic of the structure, energy absorption was achieved by overcoming its energy barriers, demonstrating great potential in cushioning and energy absorption applications.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"295 ","pages":"Article 110282"},"PeriodicalIF":7.1,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877259","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

Giant Shear-vertical Wave Bandgaps Induced by Diffuse Domain-walls in Ferroelectrics 铁电体中漫射畴壁诱导的巨大剪切-垂直波带隙

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-16 DOI: 10.1016/j.ijmecsci.2025.110239

Sizheng Zheng , Chang Liu , Yong Zhang , Shengbin Shi , Tao Xu , Takahiro Shimada , Jie Wang

{"title":"Giant Shear-vertical Wave Bandgaps Induced by Diffuse Domain-walls in Ferroelectrics","authors":"Sizheng Zheng , Chang Liu , Yong Zhang , Shengbin Shi , Tao Xu , Takahiro Shimada , Jie Wang","doi":"10.1016/j.ijmecsci.2025.110239","DOIUrl":"10.1016/j.ijmecsci.2025.110239","url":null,"abstract":"<div><div>Diffuse domain walls are found to have a significant impact on the dielectric, piezoelectric, and thermal conductivity properties of ferroelectric materials. However, the influence of diffuse domain walls on the acoustic properties of ferroelectric materials has not yet been explored. In this work, we develop a phase-field perturbation model for ferroelectric materials and demonstrate that 90° diffuse domain walls can induce giant bandgaps of shear-vertical wave in bulk ferroelectrics. These giant bandgaps stem from the frequency-independent negative shear modulus localized at diffuse domain walls between adjacent domains. The bandgaps can be tuned by adjusting the periodic domain width, and the size dependence of the vibration frequency at the bandgap edges is consistent with experimental observations. Further transient dynamics analysis demonstrates that diffuse domain walls behave as freely sliding interfaces, which block the free propagation of shear-vertical waves and allow only resonant modes within a specific frequency range. The present work not only reveals the profound impact of diffuse domain walls on the propagation of elastic waves in ferroelectrics but also provides a theoretical framework for designing active and tunable sub-THz acoustic metamaterials based on ferroelectric periodic domain structures.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"294 ","pages":"Article 110239"},"PeriodicalIF":7.1,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833987","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

Modeling and design of pre-set stiffness continuum robot 预置刚度连续体机器人的建模与设计

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-15 DOI: 10.1016/j.ijmecsci.2025.110224

Chunbo Wang, Taixian Jin, Hao Ren, He Zhang, Jie Zhao

{"title":"Modeling and design of pre-set stiffness continuum robot","authors":"Chunbo Wang, Taixian Jin, Hao Ren, He Zhang, Jie Zhao","doi":"10.1016/j.ijmecsci.2025.110224","DOIUrl":"10.1016/j.ijmecsci.2025.110224","url":null,"abstract":"<div><div>Minimally Invasive Surgery (MIS) through human body cavities requires continuum robots to adapt to physiological structures while maintaining sufficient degrees of freedom for precise operations. However, their clinical adoption has been limited by complex flexible joints and actuation mechanisms. This paper proposes a Pre-set Stiffness Continuum Robot (PSCR), which employs a pair of geometrically optimized superelastic tubes with asymmetric patterns to create joint units of varied stiffness and maximum working angles, enabling pre-programmed motion trajectories. An integrated tendon structure enhances overall stiffness and bidirectional push–pull capabilities. Through mechanical analysis of a single joint unit, we established a quantitative relationship between tendon-driven force and global bending curvature, considering force balance and friction effects. This led to the derivation of mapping relationships among task space, mechanical space, kinematic space, and robot configuration, providing a theoretical foundation for motion behavior prediction. Experimental validation of a PSCR prototype confirmed its kinematic and mechanical models, stiffness, and load-bearing capacity. The single-tendon actuation PSCR enables partial extreme position locking for lumen adaptation while retaining the ability for further motion in its unlocked segments, allowing precise distal manipulation, which offers an efficient and accurate solution for MIS procedures.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"295 ","pages":"Article 110224"},"PeriodicalIF":7.1,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854883","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

Fracture mechanics analysis of auxetic chiral materials 缺乏手性材料的断裂力学分析

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-15 DOI: 10.1016/j.ijmecsci.2025.110281

Yingbin Zhang , Hongjun Yu , Shuai Zhu , Jianshan Wang

{"title":"Fracture mechanics analysis of auxetic chiral materials","authors":"Yingbin Zhang , Hongjun Yu , Shuai Zhu , Jianshan Wang","doi":"10.1016/j.ijmecsci.2025.110281","DOIUrl":"10.1016/j.ijmecsci.2025.110281","url":null,"abstract":"<div><div>Auxetic materials sometimes exhibit extremely high strength, stiffness and toughness, such as limpet tooth. The toughening mechanism of such materials is still not completely clear. This paper first theoretically derives the crack-tip asymptotic fields of a planar auxetic chiral solid. It can be found that the planar auxetic chiral solid has three crack modes, i.e., the opening mode governed by the mode I force stress intensity factor (FSIF), the sliding mode governed by the mode-II FSIF and the local bending mode governed by the couple stress intensity factor (CSIF), and these crack modes are generally coupled with each other. The microstructural auxeticity induces asymmetric distributions of the angular functions in the mode I and mode II cracks. Local bending deformation is likely to induce the occurrence of stepped crack paths in auxetic chiral materials observed experimentally in available literature. Then, a new interaction integral (I-integral) method is established to decouple the mode-I FSIF, the mode-II FSIF and the CSIF. The proposed I-integral has two extra superiorities over the J-integral: (i) it does not require the derivatives of material parameters; (ii) it is domain-independent for material interfaces, which is theoretically proved and numerically validated. With these two features, the proposed I-integral becomes a powerful tool in decoupling the FSIFs and CSIF for nonhomogeneous and multi-interface auxetic chiral materials. Numerical simulations on the fracture of limpet teeth indicate that the tensile-torsional coupling deformation of microstructures can reduce the risk of mode I fracture of auxetic chiral materials. The chirality angle affects both the FSIFs and CSIFs significantly.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"295 ","pages":"Article 110281"},"PeriodicalIF":7.1,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143854885","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

Improved shaped charge formation model based on the effective charge 基于有效装药的改进聚能形成模型

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-15 DOI: 10.1016/j.ijmecsci.2025.110223

Jianguo Ning, Qidong Chen, Jianqiao Li, Huilan Ren, Xiangzhao Xu

{"title":"Improved shaped charge formation model based on the effective charge","authors":"Jianguo Ning, Qidong Chen, Jianqiao Li, Huilan Ren, Xiangzhao Xu","doi":"10.1016/j.ijmecsci.2025.110223","DOIUrl":"10.1016/j.ijmecsci.2025.110223","url":null,"abstract":"<div><div>Shaped charges, renowned for their exceptional penetration capabilities, play a critical role in military and civilian applications, including armament manufacturing and petroleum extraction. However, traditional jet formation models exhibit limited accuracy, particularly in failing to capture the reverse velocity gradient observed at the jet tip. To address these limitations, this study innovatively developed a dynamic effective charge (DEC) model, building upon the established one-dimensional quasi-steady jet formation theory (PER theory). Specifically, an effective charge calculation method was developed to accurately determine the portion of explosive charge actively driving the collapse of the shaped charge liner. Additionally, a dynamic acceleration model was incorporated to realistically characterize the liner’s collapse process. Through these advancements, the DEC model not only enables accurate predictions of jet velocity but also effectively captures the reverse velocity gradient phenomenon at the jet tip. Moreover, the DEC model explains the nonlinear relationship between the jet velocity and the charge length-to-diameter ratio, revealing that there is a limiting value of the shaped charge length to diameter ratio, beyond which additional increases in charge length result in minimal velocity enhancements. These advancements provide critical theoretical insights and practical guidelines for optimizing shaped charge designs across a broad range of engineering applications.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"295 ","pages":"Article 110223"},"PeriodicalIF":7.1,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838679","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

Peridynamics beam plasticity theory: Yield surface for general cross-sectional geometry 周动力梁塑性理论：一般截面几何的屈服面

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-15 DOI: 10.1016/j.ijmecsci.2025.110249

Nilesh Choudhary, Sajal, Pranesh Roy

{"title":"Peridynamics beam plasticity theory: Yield surface for general cross-sectional geometry","authors":"Nilesh Choudhary, Sajal, Pranesh Roy","doi":"10.1016/j.ijmecsci.2025.110249","DOIUrl":"10.1016/j.ijmecsci.2025.110249","url":null,"abstract":"<div><div>This paper presents a general way of deriving the yield surface for peridynamics (PD) Simo-Reissner beam plasticity theory from the three-dimensional (3D) von Mises yield surface and formulates a procedure to determine the plastic multiplier and elastoplastic tangent modulus. Beam plasticity problems are usually solved by employing the upper and lower bound theorems of plasticity and postulating interaction relations. However, it is well known that deriving exact expression for interaction equation is considerably difficult for a general beam cross-section and loading. To overcome this roadblock, the idea here is to express the yield surface in terms of cross-sectional coordinates by employing Simo-Reissner hypothesis on deformation field, expand the terms using Taylor series up to quadratic order, and analytically integrate over the cross-sectional area. This results in reduced form of the yield surface equation which involves beam cross-sectional properties such as area and moment of inertia. A return mapping algorithm is proposed to determine the plastic multiplier and the elastoplastic tangent modulus. This novel method does not require ad-hoc interaction relations derived from the upper and lower bound theorems and is applicable to any general beam cross-section. Numerical simulations include validation of displacement contour obtained from the proposed technique and the finite element method, and prediction of plastic deformation of cantilever beam, two-dimensional (2D) and 3D portal frames, 2D and 3D truss-frames, single unit octet lattice structure, 3×3×3 octet lattice structure, and compression-torsion lattice structures under quasi-static loading which demonstrate the potential of our approach.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"295 ","pages":"Article 110249"},"PeriodicalIF":7.1,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868328","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

Self-adaptive bistable gripper with Fin Ray effect for versatile grasping 自适应双稳夹持器，具有鳍射线效果，适用于多种抓取

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-04-14 DOI: 10.1016/j.ijmecsci.2025.110279

Xianyang Cai , Bin Tang

{"title":"Self-adaptive bistable gripper with Fin Ray effect for versatile grasping","authors":"Xianyang Cai , Bin Tang","doi":"10.1016/j.ijmecsci.2025.110279","DOIUrl":"10.1016/j.ijmecsci.2025.110279","url":null,"abstract":"<div><div>Snap-through bistability, a mechanism frequently observed in nature, has been extensively applied in the design of soft grippers due to its rapid response and force amplification characteristics. However, current bistable gripper designs often face challenges in achieving adaptive performance for versatile grasping tasks. This paper proposes a self-adaptive bistable gripper that incorporates the Fin Ray effect and finger–palm synergy within a spring-link bistable structure. In this design, the soft fingers are connected to the bistable structure, with their base motion coupled to the rigid bistable framework through an articulated linkage mechanism. Moreover, the gripper autonomously converts the kinetic energy of a dynamic object into potential energy within the bistable structure, inducing snap-through behavior. Theoretical and experimental analyses were conducted to evaluate the nonlinear mechanical response of the gripper during both static and dynamic grasping scenarios. The results indicate that the bistable gripper exhibits notable self-adaptive capabilities and can grasp static and dynamic objects with response times of tens of milliseconds through active and passive triggering. It also displays versatile capabilities, such as underwater and multi-object grasping. This research contributes to the advancement of bistable gripper design and shows promise for challenging applications such as space debris cleanup, aerial perching, and deep-sea manipulation.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"295 ","pages":"Article 110279"},"PeriodicalIF":7.1,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860138","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