International Journal of Mechanical Sciences最新文献_第6页

A coupled model of rolling process based on approximate rigid body model 基于近似刚体模型的轧制过程耦合模型

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-06 DOI: 10.1016/j.ijmecsci.2025.110433

Zhiqiang Li , Tao Wang , Chenchen Zhao , Baoqi Guo , Zhongkai Ren , Zhengyi Jiang , Qingxue Huang

{"title":"A coupled model of rolling process based on approximate rigid body model","authors":"Zhiqiang Li , Tao Wang , Chenchen Zhao , Baoqi Guo , Zhongkai Ren , Zhengyi Jiang , Qingxue Huang","doi":"10.1016/j.ijmecsci.2025.110433","DOIUrl":"10.1016/j.ijmecsci.2025.110433","url":null,"abstract":"<div><div>Rolling is a rapid and efficient metal forming technique with vast potential for future applications. Concurrently, the finite element method (FEM) has become a standard tool for analyzing the rolling process. Typically, two models are employed for the rolls during this analysis: the rigid body model and the elastic body model. However, employing a rigid body model reduces computational accuracy, while using an elastic body model results in lower computational efficiency. To address this issue, this study developed an approximate rigid body model. This model dynamically adjusts the displacement of the roll nodes within the rolling zone to ensure that the shape of the flattened roll remains consistent throughout the rolling process. This model accounts for roll flattening while avoiding the extensive computational time typically required to solve for roll deformation. In order to address the coupled deformation issues between roll deformation and plate deformation, a coupled model based on the approximate rigid body model has been established. This coupled model utilizes the FEM to calculate the deformation of the plate as well as the associated rolling force. Subsequently, the shape of the roll is updated in accordance with this force, and the plate's deformation is recalculated. This process is iteratively repeated until the rolling force converges to a predetermined standard. Upon verification, the proposed coupled model demonstrates excellent convergence. The results obtained using the coupled model closely align with those derived from the finite element model employing elastic rolls. Compared to experimental measurements, the prediction errors for both the rolling force and the plate thickness are within 3 %. The coupled model offers a novel approach for rapidly and efficiently solving the deformation of die and workpieces in metal forming processes.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110433"},"PeriodicalIF":7.1,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261425","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

Thermal performance of SGSP with porous layer under heat extraction 含多孔层SGSP的热抽提热性能

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-06 DOI: 10.1016/j.ijmecsci.2025.110472

Jiang-Tao Hu , Shuo-Jun Mei , Lei Wang , Lei Xu

{"title":"Thermal performance of SGSP with porous layer under heat extraction","authors":"Jiang-Tao Hu , Shuo-Jun Mei , Lei Wang , Lei Xu","doi":"10.1016/j.ijmecsci.2025.110472","DOIUrl":"10.1016/j.ijmecsci.2025.110472","url":null,"abstract":"<div><div>Salt gradient solar pond (SGSP) is a promising solar energy collector, which can absorb solar radiation and store it as thermal energy for a long time. Efficient heat extraction is essential for the practical application of SGSP. However, the heat extraction may accelerate the erosion of the salt stratification, as it introduces disturbances to the flow field. This study employs a custom-built Lattice Boltzmann Method (LBM) code to investigate the effects of heat extraction and porous layers on the thermal performance of SGSPs. The results reveal that both heat extraction and the presence of a porous layer effectively suppress thermosolutal convection, thereby enhancing the thermal stability of SGSP. Notably, increasing the heat extraction rate of each tube proves more effective for improving heat storage than adding more extraction tubes. While heat extraction inevitably reduces the thermal storage capacity of SGSP, incorporating a porous layer with lower permeability helps mitigate this effect, promoting long-term thermal storage and stable operation. However, the beneficial influence of the porous layer diminishes under high heat extraction rates. Based on these insights, this study proposes optimized design parameters for porous layers and heat extraction to maximize SGSP performance.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110472"},"PeriodicalIF":7.1,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254547","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

Thermomechanical cloaking via compatibility-driven topology optimization 通过兼容性驱动的拓扑优化实现热机械隐身

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-06 DOI: 10.1016/j.ijmecsci.2025.110400

Xubing Cheng , Zongliang Du , Wen Meng , Chang Liu , Weisheng Zhang , Xu Guo

{"title":"Thermomechanical cloaking via compatibility-driven topology optimization","authors":"Xubing Cheng , Zongliang Du , Wen Meng , Chang Liu , Weisheng Zhang , Xu Guo","doi":"10.1016/j.ijmecsci.2025.110400","DOIUrl":"10.1016/j.ijmecsci.2025.110400","url":null,"abstract":"<div><div>This study presents a novel topology optimization framework for thermomechanical cloaking by introducing the compatibility of cloak interface (CCI). The essence is to make the actual boundary conditions along the exterior of the cloak consistent with the target boundary conditions, including the Dirichlet and Neumann conditions (i.e., temperature and thermal loads for thermal cloaking, displacement and nodal forces for mechanical cloaking). Compared to conventional design strategies, the proposed method offers a unified design framework for the rational design of multifunctional cloaking without being restricted by the invariance requirement of transformation-based approaches. At the same time, this method only requires analysis of the cloak region during the optimization process, thereby reducing the computational cost. Furthermore, the explicit topology optimization based on Moving Morphable Voids (MMV) produces cloaks with geometric information, enabling its practical application. Several numerical examples demonstrate the method’s effectiveness, robustness, and adaptability for thermal and multifunctional cloaking in lattice and continuum structures with various shaped openings, as well as multiple load cases. The current design strategy is extendable to other multiphysics cloaking applications, offering new insights into advanced functional material design.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110400"},"PeriodicalIF":7.1,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240010","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

Deep space landing—soft tensegrity is possible for its designable performances 深空着陆-软张拉体以其可设计的性能成为可能

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-04 DOI: 10.1016/j.ijmecsci.2025.110455

Fan Jiang, Xiuting Sun, Guodong Xiao, Jian Xu

{"title":"Deep space landing—soft tensegrity is possible for its designable performances","authors":"Fan Jiang, Xiuting Sun, Guodong Xiao, Jian Xu","doi":"10.1016/j.ijmecsci.2025.110455","DOIUrl":"10.1016/j.ijmecsci.2025.110455","url":null,"abstract":"<div><div>Soft tensegrity with mechanical interpretability and designable performances is introduced for soft landing in deep space probes, since the cables and struts form soft tensegrity through various connections can be balanced by self-stress and are easy to fabricate. In this work, a novel soft tensegrity lander is proposed. A refined theoretical model combined with a data-driven surrogate model is established to coordinate its static and dynamic performances and explore the applicability of the whole landing process. Specifically, a fast multibody dynamic method, considering the flexibility of struts, the viscoelasticity of cables, and contact-impact, is built by the affine transformation absolute nodal coordinate formulation. Given the inefficient performance coordination of high-dimensional nonlinear systems, an integrated reverse design method combining a data-driven surrogate model with Pareto frontier theory is proposed. The proposed soft tensegrity has better static and dynamic performance than the rigid one. In experiments for landing, the scenarios simulating different satellite soil environments are constructed to provide possible application requirements for a soft tensegrity lander. The results could inspire the new meta-structure design method, and provide a solid foundation for establishing practical guidelines for soft tensegrity with reverse design capability for aerospace.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110455"},"PeriodicalIF":7.1,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254545","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

2D thermal consolidation model for saturated clay considering thermal contraction 考虑热收缩的饱和粘土二维热固结模型

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-04 DOI: 10.1016/j.ijmecsci.2025.110449

Lun Hua , Yi Tian , Yue Gui , Wenbing Wu , Shunchuan Wu , Minjie Wen

{"title":"2D thermal consolidation model for saturated clay considering thermal contraction","authors":"Lun Hua , Yi Tian , Yue Gui , Wenbing Wu , Shunchuan Wu , Minjie Wen","doi":"10.1016/j.ijmecsci.2025.110449","DOIUrl":"10.1016/j.ijmecsci.2025.110449","url":null,"abstract":"<div><div>The realistic simulation of thermo-hydro-mechanical (THM) coupling response of soil media is fundamental to the design of thermal-related geotechnical engineering. The saturated normally-consolidated (NC) clays experimentally exhibit thermal contraction behavior when heated under drained condition, whereas it is rarely considered by existing THM coupling model. In this study, a unified constitutive relationship of saturated NC clays is proposed to achieve the sound consideration of the thermal contraction. The thermal contraction is essentially a coupling result of three deformation processes including thermal expansion, rebound caused by the generation of thermal excess pore water pressure (EPWP), and contraction induced by the dissipation of thermal EPWP. Accordingly, a THM coupling model is established for a two-dimensional thermal consolidation problem of the saturated NC clays, and the corresponding semi-analytical solutions are derived under a time-dependent strip thermomechanical load through Laplace-Fourier transform, and they are validated by comparing with existing solutions. Based on proposed model, the THM coupling characteristics of the saturated NC clays are investigated in depth. The outcomes indicate that thermal load induces not only positive but negative EPWP which is attributed mainly to the seepage of pore water. Overall, when subjected to drained heating, the saturated NC clays first experience heave and then settlement, and finally exhibit settlement. Among them, the ultimate settlement is mainly related to temperature.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110449"},"PeriodicalIF":7.1,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297243","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

Dynamics and experiments of an inflatable tri-boom system 充气三臂系统的动力学与实验

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-04 DOI: 10.1016/j.ijmecsci.2025.110459

Zhengzheng Cai, Yexiong Huang, Hao Du, Dongping Jin, Jialiang Sun

{"title":"Dynamics and experiments of an inflatable tri-boom system","authors":"Zhengzheng Cai, Yexiong Huang, Hao Du, Dongping Jin, Jialiang Sun","doi":"10.1016/j.ijmecsci.2025.110459","DOIUrl":"10.1016/j.ijmecsci.2025.110459","url":null,"abstract":"<div><div>Inflatable structures have gained significant attention in aerospace engineering due to their lightweight, compact, and highly deployable design. However, their complex on-orbit dynamic behavior poses huge challenges for theoretical simulation and experimental validation. In this paper, a new integrated framework including orbital dynamic model of a rigid-flexible multibody system and micro-gravity ground experiments is proposed to study the dynamic behavior of an inflatable tri-boom system. Initially, by integrating absolute nodal coordinate formulation (ANCF) with equivalent beam theory, high computational efficiency is achieved while predictive accuracy for on-orbit behavior is maintained. To validate the dynamic model, a micro-gravity ground experimental system for the structure is established to simulate key dynamic conditions encountered in space, including micro-gravity and Coriolis force disturbances, which are achieved by air bearings and distributed eccentric rotor devices. This setup not only verifies the accuracy and reliability of the dynamic model in terms of modal characteristics and on-orbit dynamic responses, but also makes the experimental design applicable to other large spinning space structures. On this basis, taking an on-orbit inflatable tri-boom system with a baseline of 100 m as an example, the dynamic responses, attitude variation and space alignment between the sub-satellites under spinning motions are analyzed. Furthermore, the influence of the spinning angular speed and inflation pressure on the out-of-plane vibration is also investigated. The results provide fundamental advances for its optimization design and control strategies in space environments.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110459"},"PeriodicalIF":7.1,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240006","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

The butterfly effect of tiny density difference in microfluidic channel 微流控通道中微小密度差的蝴蝶效应

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-04 DOI: 10.1016/j.ijmecsci.2025.110430

Dege Li , Ganggang Ni , Mengting Wang , Junyi Wu , Haining Zhang , Yingying Yang , Penghui Wang , Bo Chi , Shuo Ji , Yanzhen Zhang , Hao Zhang , Xiaofeng Wei

{"title":"The butterfly effect of tiny density difference in microfluidic channel","authors":"Dege Li , Ganggang Ni , Mengting Wang , Junyi Wu , Haining Zhang , Yingying Yang , Penghui Wang , Bo Chi , Shuo Ji , Yanzhen Zhang , Hao Zhang , Xiaofeng Wei","doi":"10.1016/j.ijmecsci.2025.110430","DOIUrl":"10.1016/j.ijmecsci.2025.110430","url":null,"abstract":"<div><div>Microfluidic technology plays a vital role in modern industry and advanced scientific research due to its exceptional features. Owing to the small scales and minor density differences between multiphase fluids, the impact of microgravity on the droplet behavior has been largely overlooked. However, this work reveals that even subtle density differences can have a butterfly effect on the behavior of microdroplet. Droplets within microchannels exhibit three distinct motion regimes: (i) contacting mode: the droplet gradually descends during its movement along the channel and finally contacts the wall; (ii) floating mode: the droplet descends first but floats out maintaining a stable distance from the wall; (iii) bouncing mode: the droplet bounces off the wall at the moment of contacting it. This study uncovers the physical mechanisms of how the working parameters influence droplet behavior and establishes a phase diagram depicting the droplet behavior.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110430"},"PeriodicalIF":7.1,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291416","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

Non-smooth nonlinear meta-plate for supersonic aeroelastic vibration suppression 用于超音速气动弹性振动抑制的非光滑非线性元板

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-04 DOI: 10.1016/j.ijmecsci.2025.110426

Tian Zhao , Meng Li , Wei Tian , Yongquan Liu , Zhichun Yang

{"title":"Non-smooth nonlinear meta-plate for supersonic aeroelastic vibration suppression","authors":"Tian Zhao , Meng Li , Wei Tian , Yongquan Liu , Zhichun Yang","doi":"10.1016/j.ijmecsci.2025.110426","DOIUrl":"10.1016/j.ijmecsci.2025.110426","url":null,"abstract":"<div><div>This study presents an innovative non-smooth nonlinear meta-plate design for simultaneous broadband vibration suppression and supersonic flutter enhancement in aerospace applications. The proposed non-smooth nonlinear meta-plate (NNM) integrates periodic nonlinear vibro-impact resonators (NVIRs) to address the critical challenges of vibration control and aeroelastic stability enhancement in stiffened plates under supersonic flow. The NVIRs exhibit distinctive mechanical properties combining amplitude-dependent stiffness nonlinearity and collision-enhanced metadamping. Based on harmonic balance analysis and the modal analysis approach, we derive semi-analytical solutions for nonlinear bandgap boundaries that explicitly depend on nonlinear stiffness and damping parameters. Comparison between theoretical predictions and experimental results shows excellent agreement. Experimental evaluations reveal that the NNM configuration achieves remarkable improvements, including a 267 % enhancement in bandgap width with only 3.05 % mass increase. Besides, the implementation of the NNM demonstrates its exceptional aeroelastic suppression capabilities in supersonic flow, resulting in a notable 21.3 % improvement in flutter stability. This enhancement is attributed to the synergistic effect of impact-induced stiffness modulation and nonlinear energy dissipation mechanisms. The precise modulation of nonlinear stiffness and collision damping parameters also facilitates the realization of significant nonlinear behavior and collision-enhanced metadamping effects in NVIRs, governing broadband energy transmission attenuation. The proposed nonlinear meta-plate design establishes an innovative approach to nonlinear metastructure engineering, enabling simultaneous broadband vibration control and supersonic flutter suppression in aircraft structures.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110426"},"PeriodicalIF":7.1,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204758","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 of cavitating jet erosion using Eulerian–Lagrangian modeling 用欧拉-拉格朗日模型研究空化射流侵蚀

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-04 DOI: 10.1016/j.ijmecsci.2025.110457

Zhengdong Wang , Di Kong , Zuchao Zhu , Bo Liu , Meng Zhao , Xiaojun Li , Qile Ren , Linmin Li

{"title":"Investigation of cavitating jet erosion using Eulerian–Lagrangian modeling","authors":"Zhengdong Wang , Di Kong , Zuchao Zhu , Bo Liu , Meng Zhao , Xiaojun Li , Qile Ren , Linmin Li","doi":"10.1016/j.ijmecsci.2025.110457","DOIUrl":"10.1016/j.ijmecsci.2025.110457","url":null,"abstract":"<div><div>Cavitation-induced erosion is a critical challenge in hydraulic machinery, often leading to severe material damage. In this study, a multiscale numerical framework is developed to improve the prediction of cavitation erosion, particularly on aluminum test specimen surfaces subjected to cavitating jet flows. The proposed model integrates a volume of fluid (VOF) method for resolving macroscale cavity dynamics with a Lagrangian discrete bubble model (DBM) to capture the behavior of microscale vapor bubbles. An erosion aggressiveness indicator is introduced by combining local instantaneous pressure and vapor volume fraction gradients, enabling a detailed evaluation of high-risk erosion areas. Compared to conventional cavitation modeling approaches, this work provides two key advancements. Firstly, the asynchronous evolution and collapse of macro- and microscale structures are resolved and correlated with shear stress and erosion patterns. Secondly, the respective contributions of macroscale cavities and microscale bubbles to total mass loss are quantitatively evaluated. While macroscale cavities account for approximately 95% of the erosion, microscale bubbles contribute around 5% and play a dominant role in the formation of secondary erosion area near the periphery. Validation against experimental data shows that the multiscale model improves erosion prediction accuracy, offering enhanced physical insight into erosion mechanisms across scales. These findings underscore the necessity of considering both macro- and microscale cavitation structures in predictive modeling for erosion-prone systems.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110457"},"PeriodicalIF":7.1,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240009","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 grasshopper-inspired miniature piezoelectric actuator integrated with three vibrating units 受蚱蜢启发的微型压电驱动器集成了三个振动单元

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-04 DOI: 10.1016/j.ijmecsci.2025.110458

Yingzhi Wang , Bingwei Zhang , Jie Deng , Shijing Zhang, Weishan Chen, Yingxiang Liu

{"title":"A grasshopper-inspired miniature piezoelectric actuator integrated with three vibrating units","authors":"Yingzhi Wang , Bingwei Zhang , Jie Deng , Shijing Zhang, Weishan Chen, Yingxiang Liu","doi":"10.1016/j.ijmecsci.2025.110458","DOIUrl":"10.1016/j.ijmecsci.2025.110458","url":null,"abstract":"<div><div>Miniature piezoelectric actuators (MPAs) have been extensively investigated owing to their gram-scale mass, sub-micrometer resolution, and milliwatt-range power consumption. However, improving their output characteristics (force, speed, resolution) while maintaining miniaturization remains challenging. In this study, a three-vibrating-unit MPA (3VU-MPA) was proposed, which consists of three vibrating units (VUs) and two integrated vibration isolation mechanisms (VIMs). The design of the VIM was analyzed using the transfer matrix method and finite element analysis. The VIM design enables the 3VU-MPA to work in three working modes: individual excitation, alternating excitation and cooperative excitation. A prototype was fabricated and experimentally evaluated, measuring 15.4 × 15.6 × 30 mm<sup>3</sup> and weighing 4.7 g. A maximum speed of 351.8 mm/s was achieved by the 3VU-MPA under no-load conditions, while a maximum payload capacity of 203.5 g was obtained at reduced speed. A maximum speed of 197.7 mm/s was achieved with a traction force of 46.1 mN when climbing vertical rods. Additionally, a displacement resolution of 0.15 μm was obtained. This work provides a feasible approach to enhance both output performance and working mode diversity in MPAs.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110458"},"PeriodicalIF":7.1,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144230573","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