International Journal of Mechanical Sciences最新文献

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Optimized synchronization efficiency in micromechanical arch beams 优化微机械拱形梁的同步效率
IF 7.1 1区 工程技术
International Journal of Mechanical Sciences Pub Date : 2025-03-07 DOI: 10.1016/j.ijmecsci.2025.110098
Zunhao Xiao , Zhan Shi , Qiangfeng Lv , Xuefeng Wang , Xueyong Wei , Ronghua Huan
{"title":"Optimized synchronization efficiency in micromechanical arch beams","authors":"Zunhao Xiao ,&nbsp;Zhan Shi ,&nbsp;Qiangfeng Lv ,&nbsp;Xuefeng Wang ,&nbsp;Xueyong Wei ,&nbsp;Ronghua Huan","doi":"10.1016/j.ijmecsci.2025.110098","DOIUrl":"10.1016/j.ijmecsci.2025.110098","url":null,"abstract":"<div><div>Synchronization phenomena in MEMS devices are extensively studied due to their critical applications and intricate dynamics. Nevertheless, research on synchronization time – key to sensor performance – remains sparse. Current optimization efforts are predominantly focused on device fabrication and signal transmission, while dynamics approaches are limited to perfected straight beams, which can deviate in practical applications. In this study, we explore the dynamics of synchronization in a clamped–clamped micromechanical arch beam, modulated by electrothermal currents. Initially, we employed electrothermal currents to achieve an optimal synchronization time. Our theoretical analysis demonstrated that reducing equivalent nonlinearity leads to a shorter synchronization time. This effect was experimentally verified by manipulating the static DC voltage in electrostatic excitation to control the nonlinearity. By combining electrothermal current regulation and nonlinearity control, we substantially reduced synchronization time by 84%, from 1.170 s to 0.182 s. These results introduce a novel strategy for enhancing the detection efficiency of synchronization sensors, with broad implications for sensor technology.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"291 ","pages":"Article 110098"},"PeriodicalIF":7.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620318","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
Topology optimization with multi-phase length-scale control
IF 7.1 1区 工程技术
International Journal of Mechanical Sciences Pub Date : 2025-03-07 DOI: 10.1016/j.ijmecsci.2025.110086
A. Asadpoure , M.M. Rahman , S.A. Nejat , L. Javidannia , L. Valdevit , J.K. Guest , M. Tootkaboni
{"title":"Topology optimization with multi-phase length-scale control","authors":"A. Asadpoure ,&nbsp;M.M. Rahman ,&nbsp;S.A. Nejat ,&nbsp;L. Javidannia ,&nbsp;L. Valdevit ,&nbsp;J.K. Guest ,&nbsp;M. Tootkaboni","doi":"10.1016/j.ijmecsci.2025.110086","DOIUrl":"10.1016/j.ijmecsci.2025.110086","url":null,"abstract":"<div><div>We present a multi-material density-based topology optimization framework that offers full length-scale control on each of the material phases involved. We represent different material phases by different sets of independent design variables, while avoiding a prohibitive number of constraints, and devise a consistent penalization tailored to multimaterial design. The independent design variables are passed through multi-phase Heaviside projections and the modified material model with penalization to define element densities and material properties. Overfilling is avoided via constraints on element densities which are handled through “sum of powers” aggregation and smoothing to curtail the need for local constraints and the associated computational burden. The proposed framework enables the imposition of individual length scales while avoiding, to a large extent, the issues related to phase mixing at boundaries. It is also amenable to gradient-based optimizers and thus capable of solving large-scale multi-material topology optimization problems. Multiple topology optimization problems, including compliance minimization and design of compliant mechanisms are provided to demonstrate the effectiveness of the proposed framework to cleanly enforce specified length-scales on individual material phases.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"291 ","pages":"Article 110086"},"PeriodicalIF":7.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601472","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
Transferability of machine-learning interatomic potential to α-Fe nanocrystalline deformation
IF 7.1 1区 工程技术
International Journal of Mechanical Sciences Pub Date : 2025-03-05 DOI: 10.1016/j.ijmecsci.2025.110132
Kazuma Ito , Tatsuya Yokoi , Katsutoshi Hyodo , Hideki Mori
{"title":"Transferability of machine-learning interatomic potential to α-Fe nanocrystalline deformation","authors":"Kazuma Ito ,&nbsp;Tatsuya Yokoi ,&nbsp;Katsutoshi Hyodo ,&nbsp;Hideki Mori","doi":"10.1016/j.ijmecsci.2025.110132","DOIUrl":"10.1016/j.ijmecsci.2025.110132","url":null,"abstract":"<div><div>To improve the mechanical properties of polycrystalline metallic materials, understanding the elementary processes involved in their deformation at the atomic level is crucial. In this study, firstly, we evaluate the transferability of the recently proposed α-Fe machine-learning interatomic potential (MLIP), constructed from mechanically generated training data based on crystal space groups, to the tensile deformation process of nanopolycrystals. The transferability was evaluated by comparing the physical properties and lattice defect formation energies, which are important in the deformation behavior of nanopolycrystals, with those obtained from density functional theory (DFT) and by comprehensively calculating extrapolation grades based on active learning methods for the local atomic environment in the nanopolycrystal during tensile deformation. These evaluations demonstrate the superior transferability of the MLIP to the tensile deformation of the nanopolycrystals. Furthermore, large-scale molecular dynamics calculations were performed using the MLIP and the most commonly used embedded atom method (EAM) potential to investigate the effect of grain size on the deformation behavior of α-Fe polycrystals and the effect of interatomic potentials on them. The uniaxial tensile deformation behavior of the nanopolycrystals obtained from EAM was qualitatively consistent with that obtained from MLIP. This result supports the results of many studies conducted using EAM and is an important conclusion considering the high computational cost of the MLIP. Furthermore, the construction method for the MLIP used in this study is applicable to other metals. Therefore, this study considerably contributes to the understanding and material design of various metallic materials through the construction of highly accurate MLIPs.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"291 ","pages":"Article 110132"},"PeriodicalIF":7.1,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620316","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 coupled thermal-mechanical-oxidative model for predicting oxidation and stress affected by cracks
IF 7.1 1区 工程技术
International Journal of Mechanical Sciences Pub Date : 2025-03-05 DOI: 10.1016/j.ijmecsci.2025.110131
Hongcui Wang , Tiechao Bai , Weijie Li , Xiaoyu Wang , Ying Li
{"title":"A coupled thermal-mechanical-oxidative model for predicting oxidation and stress affected by cracks","authors":"Hongcui Wang ,&nbsp;Tiechao Bai ,&nbsp;Weijie Li ,&nbsp;Xiaoyu Wang ,&nbsp;Ying Li","doi":"10.1016/j.ijmecsci.2025.110131","DOIUrl":"10.1016/j.ijmecsci.2025.110131","url":null,"abstract":"<div><div>High-temperature thermal structural materials under laser irradiation are often exposed to simultaneous thermal stresses and mechanical loads, and the interaction between these factors may lead to crack propagation, oxide delamination, and even material failure. By establishing a novel coupled thermal-mechanical-oxidative (CTMO) model, this study systematically investigates the effects of crack properties on the oxidation growth and stress evolution of C/SiC composites in a high-temperature-stress-oxidative environment. Unlike the existing studies, this study incorporates several crack characterization parameters, such as crack width, spacing, depth, and inclination angle, into a unified multi-physics field coupling framework. The complex effects of these parameters on oxide formation and stress distribution are analyzed in detail. Through numerical simulations, this paper reveals the interaction mechanism between mechanical loading, oxidation behavior and crack evolution, especially the material degradation behavior under extreme conditions. The results show that the crack width and depth significantly affect the oxide diffusion and stress concentration, while the crack spacing and inclination angle further influence the material failure mode by changing the stress field interactions and oxidant diffusion paths. The CTMO model proposed not only provides theoretical support for the optimization of the performance of high-temperature thermal structural materials in complex environments, but also provides a scientific basis for the material selection and design optimization of laser protection systems. The results reveal the coupling effect between oxide growth and crack extension, which provides a new perspective for understanding the degradation mechanism of composite materials under high-temperature stress oxidation environment.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"291 ","pages":"Article 110131"},"PeriodicalIF":7.1,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641816","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
Deformation prediction of circular cell honeycomb under fixture-workpiece systems
IF 7.1 1区 工程技术
International Journal of Mechanical Sciences Pub Date : 2025-03-05 DOI: 10.1016/j.ijmecsci.2025.110120
Yan Wang, Zhigang Dong, Junchao Tian, Yan Bao, Renke Kang, Yan Qin
{"title":"Deformation prediction of circular cell honeycomb under fixture-workpiece systems","authors":"Yan Wang,&nbsp;Zhigang Dong,&nbsp;Junchao Tian,&nbsp;Yan Bao,&nbsp;Renke Kang,&nbsp;Yan Qin","doi":"10.1016/j.ijmecsci.2025.110120","DOIUrl":"10.1016/j.ijmecsci.2025.110120","url":null,"abstract":"<div><div>Carbon fiber reinforced plastic (CFRP) circular cell honeycombs are increasingly used in lightweight structures, but their weak radial stiffness makes them highly susceptible to deformation during clamping, reducing machining accuracy. Accurately predicting this deformation is essential for improving machining precision and ensuring structural integrity. In this study, a numerical model based on planar beam theory is developed to investigate the deformation mechanism of CFRP circular cell honeycombs. Additionally, a finite element analysis (FEA) model is established to incorporate various clamping factors, providing a more comprehensive prediction framework. Both approaches consider actual workpiece characteristics and clamping conditions. The predicted deformations are quantitatively compared with measured surface profiles, showing that the proposed method achieves a prediction error within 10 %. This validates the accuracy of the approach and confirms its applicability to practical machining conditions. The findings of this study offer valuable guidance for achieving high-precision machining of CFRP circular cell honeycombs, contributing to enhanced machining accuracy and reduced workpiece deformation.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"290 ","pages":"Article 110120"},"PeriodicalIF":7.1,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601506","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 phase-field fracture model for piezoelectrics in hydrogen-rich environment
IF 7.1 1区 工程技术
International Journal of Mechanical Sciences Pub Date : 2025-03-05 DOI: 10.1016/j.ijmecsci.2025.110092
Yu Tan , Fan Peng , Peidong Li , Chang Liu , Jianjun Zhao , Xiangyu Li
{"title":"A phase-field fracture model for piezoelectrics in hydrogen-rich environment","authors":"Yu Tan ,&nbsp;Fan Peng ,&nbsp;Peidong Li ,&nbsp;Chang Liu ,&nbsp;Jianjun Zhao ,&nbsp;Xiangyu Li","doi":"10.1016/j.ijmecsci.2025.110092","DOIUrl":"10.1016/j.ijmecsci.2025.110092","url":null,"abstract":"<div><div>Piezoelectric materials are often serviced in various extreme environments and exhibit complex fracture behaviors. Past studies usually focus on the electro-mechanical coupling behavior of piezoelectric materials, ignoring the influence of environmental factors. In this paper, a phase-field model for brittle fracture in piezoelectrics under hydrogen-rich environment is developed, and the coupling effects among the elastic, electric and chemical fields have been considered. A phenomenological model is developed to characterize the deterioration of fracture toughness in hydrogen-rich environment. To solve this problem numerically, a robust staggered scheme is proposed via a hybrid manner. Numerical simulations are performed to discuss the influences of hydrogen concentration and external electric field on the fracture behaviors of piezoelectrics. It is found that the existence of hydrogen atoms will reduce fracture loads and promote the cracking of piezoelectric specimens significantly. This study will provide theoretical support for the reliability assessment of piezoelectric devices in hydrogen-rich environment.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"291 ","pages":"Article 110092"},"PeriodicalIF":7.1,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593560","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
Octopus-crawling-inspired highly agile miniature piezoelectric robot with strong load-bearing capacity
IF 7.1 1区 工程技术
International Journal of Mechanical Sciences Pub Date : 2025-03-05 DOI: 10.1016/j.ijmecsci.2025.110130
Binbin Zhu , Yan Qing Wang
{"title":"Octopus-crawling-inspired highly agile miniature piezoelectric robot with strong load-bearing capacity","authors":"Binbin Zhu ,&nbsp;Yan Qing Wang","doi":"10.1016/j.ijmecsci.2025.110130","DOIUrl":"10.1016/j.ijmecsci.2025.110130","url":null,"abstract":"<div><div>Miniaturization, rapid mobility, load-bearing capacity, agility, and adaptability are key indicators for evaluating robots, as well as conflicting factors in the design process. Relying on conventional configuration designs to integrate these features into a single robot is challenging. Inspired by octopus crawling, we report a highly agile miniature continuous-elastomer piezoelectric robot (CEPR). Starting from the comparable modal vibration characteristics of ring-shaped structures and extracting their dominant configurations, the robotic square-circular ring structure is created in a module splicing method. The CEPR is easier to miniaturize and fabricate, measuring 28.5 × 28.5 × 7.2 mm<sup>3</sup> and weighing 4.3 g. Its notable advantage is high agility, enabling three-degree-of-freedom movement without angle adjustment. Moreover, the CEPR possesses enhanced motion performance with linear and rotational speeds reaching 14.3 and 4.01 body lengths per second (BL/s), respectively. Sub-micron and sub-milliradian positioning accuracies are achievable, and the load-to-weight ratio of 47.84 exhibits its strong load-bearing capacity. Furthermore, the CEPR demonstrates its multitasking ability in six environmental scenarios and excels in fault inspection tasks on circuit boards. With its miniature design, exceptional mobility, and impressive load-bearing capacity, our robot demonstrates the potential to carry sensors for environmental detection in confined areas, making it ideal for space-constrained inspection duties of precision mechanical components. Overall, this study presents a unique design idea for meeting the diverse performance requirements of miniature robots.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"291 ","pages":"Article 110130"},"PeriodicalIF":7.1,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738493","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
Isogeometric shape optimization method for vibration of variable section blade
IF 7.1 1区 工程技术
International Journal of Mechanical Sciences Pub Date : 2025-03-04 DOI: 10.1016/j.ijmecsci.2025.110129
Saifeng Zhong , Guoyong Jin , Shanjun Li , Qingtao Gong , Na Wang
{"title":"Isogeometric shape optimization method for vibration of variable section blade","authors":"Saifeng Zhong ,&nbsp;Guoyong Jin ,&nbsp;Shanjun Li ,&nbsp;Qingtao Gong ,&nbsp;Na Wang","doi":"10.1016/j.ijmecsci.2025.110129","DOIUrl":"10.1016/j.ijmecsci.2025.110129","url":null,"abstract":"<div><div>An accurate and efficient shape optimization model is a practical approach to improving the vibration characteristics of blades. This paper proposes an isogeometric shape optimization method that uses control point coordinates as optimal design variables for the rotating variable-section blade model. The local modification feature of NURBS curves allows for the adjustment of blade profiles without the need to change the number and quality of parameter elements. Integrating the centrifugal force step-by-step solution method and three-dimensional elasticity theory, while accounting for centrifugal shear stress and omitting deformation assumptions, a vibration solving model of the rotating variable section blades is firstly established to determine the objective function for blade optimization. By comparing with the numerical data from the finite element method (FEM) and modal experiments, the accuracy and effectiveness of the current vibration modelling method are validated. Using the Campbell diagram, a safe operational range is determined to avoid resonance at certain rotational speeds. This constraint is then applied to find the optimal lightweight shape for the blade. Finally, the effects of different rotational speeds, constraints, and design variable variation ranges on the shape optimization results are investigated. The method can perform extensive analysis automatically by changing the geometric design parameters, which greatly improves the efficiency of blade optimization design and provides a new idea for blade optimization design.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"290 ","pages":"Article 110129"},"PeriodicalIF":7.1,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592231","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
Investigating the dynamic behavior of marine gear transmission system considering ship rolling motion
IF 7.1 1区 工程技术
International Journal of Mechanical Sciences Pub Date : 2025-03-04 DOI: 10.1016/j.ijmecsci.2025.110126
Yiwei Hu , Zheming Tong , Shuiguang Tong , Xianmiao Yang
{"title":"Investigating the dynamic behavior of marine gear transmission system considering ship rolling motion","authors":"Yiwei Hu ,&nbsp;Zheming Tong ,&nbsp;Shuiguang Tong ,&nbsp;Xianmiao Yang","doi":"10.1016/j.ijmecsci.2025.110126","DOIUrl":"10.1016/j.ijmecsci.2025.110126","url":null,"abstract":"<div><div>The rolling motion of a ship caused by ocean waves during navigation exhibits non-linear characteristics and large amplitudes, significantly influencing the dynamic behavior of the marine gear transmission system (MGTS). This impact, often leading to considerable vibration and instability, has been largely overlooked in existing research. In this study, ship rolling motion under both regular and irregular waves is analyzed using wave spectrum analysis. The mathematical model of ship rolling is validated through hydrodynamic simulations and ship model experiments. An enhanced dynamic model of the MGTS, incorporating the actual rolling motion, is proposed. This model accounts for gears, shafts, and bearings, including meshing stiffness, transmission errors, nonlinear oil film forces in bearings, and other time-varying internal excitations. The findings reveal that ship rolling motion introduces additional stiffness, gyroscopic effects, and inertia force matrices into the dynamic model, leading to an increase of at least 23.81 % in the response amplitude of the MGTS. This amplifies torsional responses and induces quasi-periodic and chaotic phenomena. Among all wave parameters, the encounter frequency has the most significant impact on the dynamic response of the MGTS. Adjusting the ship's heading angle and navigation speed to align the encounter frequency within a specific range reduces the vibration displacement, velocity, and acceleration amplitudes of the MGTS, thereby improving stability. This study offers theoretical insights into the dynamic behavior of the MGTS during navigation, contributing to the optimization of marine transmission systems and operational strategies.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"290 ","pages":"Article 110126"},"PeriodicalIF":7.1,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583098","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
Enhancing silo discharge and energy efficiency with vibrated insert
IF 7.1 1区 工程技术
International Journal of Mechanical Sciences Pub Date : 2025-03-04 DOI: 10.1016/j.ijmecsci.2025.110128
Guangyang Hong , Jie Gao , Qijun Zheng , Aibing Yu , Shuang Liu
{"title":"Enhancing silo discharge and energy efficiency with vibrated insert","authors":"Guangyang Hong ,&nbsp;Jie Gao ,&nbsp;Qijun Zheng ,&nbsp;Aibing Yu ,&nbsp;Shuang Liu","doi":"10.1016/j.ijmecsci.2025.110128","DOIUrl":"10.1016/j.ijmecsci.2025.110128","url":null,"abstract":"<div><div>The scenarios of particle flow through small orifices are ubiquitous in manufacturing, agriculture, and natural processes. Remarkably, the flow rate can be enhanced by inserting an obstacle above the orifice. In this study, the discrete element method (DEM) is employed to investigate a novel paradigm for modulating particle flow—namely, by applying vibration to the inserted obstacle. Our results demonstrate significant increases in flow rate under vibratory excitation, driven primarily by the interplay between vibration frequency and particle descent dynamics. Granular temperature analysis reveals a localized concentration of kinetic energy near the insert, thereby requiring less energy input compared to conventional wall vibration methods. The effects of insert shape, size, position, as well as vibration amplitude and frequency, are systematically examined. Furthermore, an effective Froude number (<em>Fr</em>*) is introduced to unify the diverse vibrated flow conditions, enabling accurate prediction of discharge rates and identification of critical transitions in energy efficiency. This paradigm offers a practical, energy-efficient solution for optimizing granular flows with wide-reaching implications for bulk solids handling industries.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"291 ","pages":"Article 110128"},"PeriodicalIF":7.1,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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