European Journal of Mechanics A-Solids最新文献_第5页

Assessment of mixed-mode I/II fracture behavior of blunt V-notched 3D-printed PLA specimens: A strategy of material simplification using VIMC and EMC 钝型v形缺口3d打印PLA试件混合模式I/II断裂行为评估：基于VIMC和EMC的材料简化策略

IF 4.2 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-09-06 DOI: 10.1016/j.euromechsol.2025.105847

A.R. Torabi , Borhen Louhichi , Sahel Shahbaz , M.R. Ayatollahi

{"title":"Assessment of mixed-mode I/II fracture behavior of blunt V-notched 3D-printed PLA specimens: A strategy of material simplification using VIMC and EMC","authors":"A.R. Torabi , Borhen Louhichi , Sahel Shahbaz , M.R. Ayatollahi","doi":"10.1016/j.euromechsol.2025.105847","DOIUrl":"10.1016/j.euromechsol.2025.105847","url":null,"abstract":"<div><div>Fracture behavior of square plates made from Polylactic Acid (PLA) using Fused Deposition Modeling (FDM), containing rounded V (RV) notches, is analyzed under diagonal tensile loading. This study examines the influence of notch geometry, specifically the opening angle, orientation, and tip radius on the structural load-bearing capacity. Fracture load predictions are performed using the Mean Stress (MS) and Maximum Tangential Stress (MTS) criteria by taking advantages of a strategy of material simplification that employs the Virtual Isotropic Material Concept (VIMC) and the Equivalent Material Concept (EMC). The results indicate that notch geometry significantly affects fracture strength. Plates with larger opening angles show reduced stress concentration and improved fracture resistance, while narrower angles lead to higher localized stresses. Similarly, increasing the notch tip radius enhances fracture resistance by promoting more favorable stress distribution. Compared to conventional brittle polymers such as cast Polymethyl-methacrylate (PMMA), 3D-printed PLA demonstrates reduced sensitivity to notch-induced stress concentration, attributed to its relatively large characteristic length. Scanning Electron Microscopy (SEM) analysis reveals a transition from ductile to brittle failure mechanisms as the notch angle increases. These findings highlight the importance of optimizing notch geometry and raster orientation to improve the mechanical performance of FDM-fabricated PLA parts. The combined application of VIMC and EMC with MS and MTS criteria provides a reliable and practical framework for predicting fracture in 3D-printed structures, without the need for complex anisotropic modeling.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"116 ","pages":"Article 105847"},"PeriodicalIF":4.2,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145049972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Finite-element structural modelling of laser welds. Application to aluminium connections in Li-ion prismatic batteries 激光焊接的有限元结构建模。锂离子柱形电池铝接头的应用

IF 4.2 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-09-04 DOI: 10.1016/j.euromechsol.2025.105848

Daniele Cioni , David Morin , Arjan Strating , Stephan Kizio , Magnus Langseth , Miguel Costas

{"title":"Finite-element structural modelling of laser welds. Application to aluminium connections in Li-ion prismatic batteries","authors":"Daniele Cioni , David Morin , Arjan Strating , Stephan Kizio , Magnus Langseth , Miguel Costas","doi":"10.1016/j.euromechsol.2025.105848","DOIUrl":"10.1016/j.euromechsol.2025.105848","url":null,"abstract":"<div><div>This paper investigates the influence of process parameters on the mechanical properties of laser-welded aluminium joints through experimental and numerical studies. The experimental analysis included hardness measurements, microstructural imaging, and cross-weld tensile tests at temperatures up to 200 °C. Results indicated that size variations in the heat-affected zone (HAZ) significantly influenced mechanical properties, with increased HAZ extension leading to lower ultimate tensile strength (UTS) and higher engineering strain to failure. Thermal sensitivity was consistent across base material and welds. A suitable cohesive zone model (CZM) was proposed to represent the mechanical behaviour of the connections in large-scale finite element models. Furthermore, the performance of the CZM and of a shell element approach (SEA) were validated against the experiments and compared in a numerical study. The simulations showed that the CZM has the potential to replace the SEA in simple load cases while still providing reasonable results for complex scenarios.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"116 ","pages":"Article 105848"},"PeriodicalIF":4.2,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Forward-backward internal resonances in asymmetrical rotors under electromagnetic and gravitational fields 电磁场和引力场作用下非对称转子的前后向内部共振

IF 4.2 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-09-04 DOI: 10.1016/j.euromechsol.2025.105845

Majid Shahgholi , Jan Awrejcewicz

{"title":"Forward-backward internal resonances in asymmetrical rotors under electromagnetic and gravitational fields","authors":"Majid Shahgholi , Jan Awrejcewicz","doi":"10.1016/j.euromechsol.2025.105845","DOIUrl":"10.1016/j.euromechsol.2025.105845","url":null,"abstract":"<div><div>This study presents a comprehensive analytical and numerical investigation of an asymmetrical rotating shaft subjected to electromagnetic loading and gravitational effects. Employing Hamilton principle and the harmonic balance method, dimensionless equations of motion and modulation equations for the gravity-induced 1:-1 internal resonance (via static deflection coupling forward and backward whirling modes), as well as simultaneous super-harmonic and 1:-1 internal resonances. Linear stability analysis yields a Campbell diagram with two critical speeds that decrease monotonically as the electromagnetic parameter increases. Backbone-curve and frequency-response analyses indicate that the electromagnetic softening effect shifts the backbone curves toward lower speeds and reduces peak amplitudes, while gravity introduces new bifurcations, right-inclined response branches, and narrow frequency ranges of simultaneous forward/backward instability. Under primary-induced internal resonance, the asymmetrical system exhibits up to five coexisting steady-state solutions (three stable), compared to three in the symmetrical system (one stable). In contrast, super-harmonic–induced internal resonance generates up to seven solutions, many of which are unstable. Analytical predictions show excellent agreement with numerical results and time-history/FFT simulations. These findings quantify the influence of electromagnetic fields, gravity, and asymmetry on the onset of complex modal interactions, offering practical guidelines for tuning rotor systems to avoid deleterious internal resonances in high-speed applications.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"116 ","pages":"Article 105845"},"PeriodicalIF":4.2,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on modal characteristics and influencing factors of a non-pneumatic tire with bionic sunflower structure 仿生向日葵结构无气轮胎模态特性及影响因素研究

IF 4.2 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-09-04 DOI: 10.1016/j.euromechsol.2025.105868

Xianbin Du , Mengdi Xu , Qingxiang Sun , Haoyu Li , Yunfei Ge

{"title":"Investigation on modal characteristics and influencing factors of a non-pneumatic tire with bionic sunflower structure","authors":"Xianbin Du , Mengdi Xu , Qingxiang Sun , Haoyu Li , Yunfei Ge","doi":"10.1016/j.euromechsol.2025.105868","DOIUrl":"10.1016/j.euromechsol.2025.105868","url":null,"abstract":"<div><div>The study of tire vibration characteristics is crucial for optimizing tire structural parameters and improving the vehicle's noise, vibration, and harshness (NVH) characteristics. Addressing the influence of elastic support stiffness and mass distribution on the vibration characteristics of current non-pneumatic tires, this paper proposes a novel bionic sunflower-inspired non-pneumatic tire (BSNPT) featuring layer-specific stiffness control. A numerical simulation model of the BSNPT was developed, and its validity was confirmed through radial stiffness testing. The effects of different operational conditions and structural parameters on the vibrational behavior of the BSNPT were thoroughly examined. The results indicate that an increase in contact load exerts a strengthening effect on the natural frequency of the BSNPT, while elevated rolling speed intensifies centrifugal force effects, leading to a moderate increase in higher-order radial and first-order circumferential frequencies.The natural frequency characteristics of the BSNPT are strongly associated with the design parameters of its transition layer, support layer, annular shear band, and tread layer. This research offers significant guidance for optimizing the structural design and vibrational properties of the bionic sunflower-inspired non-pneumatic tires.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"116 ","pages":"Article 105868"},"PeriodicalIF":4.2,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

3-D finite element simulations of indentation on BaTiO3 single crystal using phase-field based constitutive theory 基于相场本构理论的BaTiO3单晶压痕三维有限元模拟

IF 4.2 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-09-03 DOI: 10.1016/j.euromechsol.2025.105865

Sumit Chorma, Ramanand Dadhich, Indrasen Singh

{"title":"3-D finite element simulations of indentation on BaTiO3 single crystal using phase-field based constitutive theory","authors":"Sumit Chorma, Ramanand Dadhich, Indrasen Singh","doi":"10.1016/j.euromechsol.2025.105865","DOIUrl":"10.1016/j.euromechsol.2025.105865","url":null,"abstract":"<div><div>Indentation experiments on BaTiO<sub>3</sub> single crystals have shown domain switching and phase transformation on the indented surface, which have been attributed to normal or circumferential normal stresses. However, the underlying mechanics of indentation-induced phase transformation is not well understood. Though experiments have provided some insights on the phase transformation over the indented surface, but it is very difficult to understand the nature of phase transformation beneath the indenter from these experiments. Thus, the mechanics of indentation-induced phase transformation in BaTiO<sub>3</sub> is still not well understood. Therefore, 3-D finite element (FE) simulations of indentation are performed on [001] poled BaTiO<sub>3</sub> single crystals by employing a phase-field based constitutive model. Results show that compressive normal strain along the indentation direction (<span><math><mrow><msub><mi>ϵ</mi><mn>33</mn></msub></mrow></math></span>) must increase beyond a threshold level for tetragonal (T) to orthorhombic (O) or T-to-T phase transformation. Further, if in-plane shear strain (<span><math><mrow><msub><mi>γ</mi><mn>12</mn></msub></mrow></math></span>) is significant, and in-plane normal strains are identical (<span><math><mrow><msub><mi>ϵ</mi><mn>11</mn></msub></mrow></math></span> = <span><math><mrow><msub><mi>ϵ</mi><mn>22</mn></msub></mrow></math></span>), then T-to-O transformation would occur, otherwise, T-to-T phase transformation takes place. By contrast, T phase transitions to monoclinic (M) phase if <span><math><mrow><msub><mi>ϵ</mi><mn>33</mn></msub></mrow></math></span> is not compressive enough. It has also been shown that spontaneous strains at a point in the indentation-affected region must reach beyond a threshold level associated with a particular phase for that phase to develop. However, if this condition is unsatisfied, the M phase will develop in the indentation affected zone.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"116 ","pages":"Article 105865"},"PeriodicalIF":4.2,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Mechanics meets neurology: Mechanobiomaterial studies on brain diseases and neuromodulation 力学与神经学：脑疾病和神经调节的力学生物材料研究

IF 4.2 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-09-02 DOI: 10.1016/j.euromechsol.2025.105857

Xuan Zhang , Huiling Yu , Changqing Jiang , Yue Shao , Bo Li , Xiaoyan Li , Changqing Chen , Zhuoer Liu , Pengfei Yang , Xi-Qiao Feng , Luming Li , Huajian Gao

{"title":"Mechanics meets neurology: Mechanobiomaterial studies on brain diseases and neuromodulation","authors":"Xuan Zhang , Huiling Yu , Changqing Jiang , Yue Shao , Bo Li , Xiaoyan Li , Changqing Chen , Zhuoer Liu , Pengfei Yang , Xi-Qiao Feng , Luming Li , Huajian Gao","doi":"10.1016/j.euromechsol.2025.105857","DOIUrl":"10.1016/j.euromechsol.2025.105857","url":null,"abstract":"<div><div>Mechanics has long served as a cornerstone of science and engineering, providing essential theoretical foundations for technological advancement. As global populations age, neurodegenerative diseases and neurological disorders—now surpassing cardiovascular diseases—have become the leading contributors to global health burdens, posing urgent societal and economic challenges. This perspective article outlines a research framework for neurodegenerative diseases, with Parkinson's disease (PD) as a representative example, through the lens of the mechanobiomaterials paradigm. Rooted in core principles of mechanics, this paradigm explores mechanics–geometry–function relationships across molecular to organ scales. While PD is clinically diagnosed by motor symptoms and treated symptomatically, its underlying pathogenesis remains poorly understood. Neuromodulation techniques have shown therapeutic promise for PD and related conditions, yet their mechanisms of action are still unclear. We highlight how integrating mechanics, materials science, and biomedical research can help address two critical gaps: (1) the role of protein misfolding, especially α-synuclein aggregation, in disease initiation, and (2) the correlation between brain tissue mechanics and disease progression. By framing these challenges within a mechanobiomaterials context, we propose a path toward deeper mechanistic insights into brain disorders and neuromodulation—opening new frontiers for both neuroscience and mechanics.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"116 ","pages":"Article 105857"},"PeriodicalIF":4.2,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 hybrid piezoelectric-triboelectric generator with inertial amplification for vibration energy harvesting 一种用于振动能量收集的惯性放大压电-摩擦混合发电机

IF 4.2 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-09-02 DOI: 10.1016/j.euromechsol.2025.105851

Guiqing Zhang , Yingli Li , Yiyang Gao , Yong Peng , Song Yao , Daolin Xu

{"title":"A hybrid piezoelectric-triboelectric generator with inertial amplification for vibration energy harvesting","authors":"Guiqing Zhang , Yingli Li , Yiyang Gao , Yong Peng , Song Yao , Daolin Xu","doi":"10.1016/j.euromechsol.2025.105851","DOIUrl":"10.1016/j.euromechsol.2025.105851","url":null,"abstract":"<div><div>Low-frequency vibrations are widely present in engineering structures and environments, yet traditional energy harvesters struggle to efficiently harvest such energy, limiting their practical applications. This study proposes a novel hybrid piezoelectric-triboelectric energy harvester (P-TENG) that integrates an inertial amplification mechanism with dual-function Euler-buckled beams to efficiently harvest low-frequency vibration energy. The inertial amplification mechanism transforms vertical vibrations into coupled horizontal-vertical motions, enabling the system to achieve multi-directional energy harvesting from simple uniaxial excitation. Simultaneously, the Euler-buckled beams dual-function as elastic supports and piezoelectric converters, leveraging buckling-induced strain for energy harvesting. A dynamic model of the P-TENG is established and numerically simulated to analyze its dynamic response, nonlinear behavior, and voltage output performance. The results demonstrate distinct stiffness hardening and hysteresis phenomena observed through bidirectional frequency sweeps. Furthermore, the system performance is highly sensitive to geometric configurations, particularly the assembly angle, which significantly affects inertial amplification effects. Experimental results demonstrate that the harvester can achieve peak output voltages of 3.76 V (PEH), 8.12 V (TENG1), and 7.38 V (TENG2) at 12 Hz under 9.8 m/s<sup>2</sup> excitation, capable of directly powering 31 commercial LEDs connected in series and enabling self-powered operation of a low-power SHT30 temperature-and-humidity wireless sensor node. This design provides a reference for developing advanced hybrid energy harvesters with improved multi-transduction mechanisms integration capabilities.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"116 ","pages":"Article 105851"},"PeriodicalIF":4.2,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Experimental and numerical analysis of the crushing response of metallic 3D double-arrow sandwich panels with optimal production capability 具有最佳生产能力的金属三维双箭头夹芯板破碎响应的实验与数值分析

IF 4.2 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-09-02 DOI: 10.1016/j.euromechsol.2025.105856

Mohammad Mahdi Abaei , Hamed Ahmadi , Neil Fellows , Morteza Seidi , Gholamhossein Liaghat

{"title":"Experimental and numerical analysis of the crushing response of metallic 3D double-arrow sandwich panels with optimal production capability","authors":"Mohammad Mahdi Abaei , Hamed Ahmadi , Neil Fellows , Morteza Seidi , Gholamhossein Liaghat","doi":"10.1016/j.euromechsol.2025.105856","DOIUrl":"10.1016/j.euromechsol.2025.105856","url":null,"abstract":"<div><div>The outstanding properties of lattice structures make them an excellent choice for use as a core in sandwich panels. They can greatly improve the strength, energy absorption, and shear resistance of sandwich panels used in various industries. This paper introduces a new innovative approach to producing metallic sandwich panels with 3D Double-Arrow Head (3D-DAH) cores to improve energy absorption and crushing response. The proposed method proves cost-effective when compared to traditional manufacturing processes and produces a final cell geometry that closely replicates previous double-arrow structure designs. Additionally, this method can be adapted for large-scale production with relative ease. Through the experimental tests, it was found that increasing the L parameter of the 3D-DAH cell raised the height of the sandwich panels which reduced the stability of the structure under compressive axial load. The failure modes became primarily asymmetrical, and the buckling initiation force reduced. Moreover, when the angles of the large and small beams in the double-arrow cell were closer together, the plateau stress area of the sandwich panel became more stable and wider, resulting in increased absorbed energy. A numerical model was developed within ABAQUS, and after validating the numerical results, the response surface method was used to predict structural behavior and optimize the geometrical parameters of 3D-DAH according to minimum peak crushing force (PCF) and maximum specific energy absorption (SEA).</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"116 ","pages":"Article 105856"},"PeriodicalIF":4.2,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

An efficient coupled zigzag third-order theory for dynamic analysis of multilayered piezoelectric semiconductor plates 多层压电半导体板动态分析的高效耦合之字形三阶理论

IF 4.2 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-09-01 DOI: 10.1016/j.euromechsol.2025.105855

Guoquan Nie , Jianyu Guo , Guolin Wang , Jinxi Liu

{"title":"An efficient coupled zigzag third-order theory for dynamic analysis of multilayered piezoelectric semiconductor plates","authors":"Guoquan Nie , Jianyu Guo , Guolin Wang , Jinxi Liu","doi":"10.1016/j.euromechsol.2025.105855","DOIUrl":"10.1016/j.euromechsol.2025.105855","url":null,"abstract":"<div><div>Different from piezoelectric (PE) dielectrics, piezoelectric semiconductors (PSs) show the interaction between electromechanical field and mobile charges. This not only makes PSs have great potential for developing electronic devices, but also presents a lot of multi-field coupled problems that need to be investigated. In this paper, an efficient coupled zigzag third-order theory (CZTT) is developed for the dynamic analysis of a multilayered PS plate. The continuity of the mechanical displacements, the transverse shear stresses and the electrical fields at each layer interface are ensured. The shear traction-free condition and electrical short circuit condition are enforced at the top and bottom surfaces of the multilayered PS plates. The number of primary field variables is reduced to seven and is independent of the number of layers. The governing equations and the corresponding boundary conditions are derived using Hamilton principle. An analytical solution for a simply supported multilayered PS plate is obtained. The vibration frequency and damping for three-layer PS plates are calculated using the analytical solution and verified through the finite element (FE) simulation. The effects of steady-state electron density, different stacking sequences and thickness ratios on dynamic characteristics are discussed. The size-dependent dynamic behaviors resulting from the semiconductor (SC) property are revealed. It is shown that the dynamic behaviors can be divided into three coupling statuses according to the density value of steady-state electron. The vibration frequency is significantly weakened within a certain range of steady-state electron density due to the screen effect of free electrons. The findings could be useful to the analysis and design of layered composites made of smart PS materials.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"116 ","pages":"Article 105855"},"PeriodicalIF":4.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145004970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 vibration characteristics analysis of flexible spiral bevel gear system 柔性螺旋锥齿轮系统建模及振动特性分析

IF 4.2 2区工程技术

European Journal of Mechanics A-Solids Pub Date : 2025-09-01 DOI: 10.1016/j.euromechsol.2025.105852

Zhanwei Li , Wenhao Yan , Peng Cao , Ruijun Liang , Rupeng Zhu

{"title":"Modeling and vibration characteristics analysis of flexible spiral bevel gear system","authors":"Zhanwei Li , Wenhao Yan , Peng Cao , Ruijun Liang , Rupeng Zhu","doi":"10.1016/j.euromechsol.2025.105852","DOIUrl":"10.1016/j.euromechsol.2025.105852","url":null,"abstract":"<div><div>This paper proposes a novel modeling approach for the spiral bevel gear system that incorporates the flexibility of both gears and thin-walled hollow shafts. Shell elements are employed to model the gear and shaft structures. To more accurately represent the interaction between components, a flexible connection is introduced to replace the conventional rigid beam coupling between bearing and shell elements. The gear meshing process is simulated using distributed springs rather than a single equivalent spring, and the component mode synthesis (CMS) method is applied to enhance computational efficiency. The proposed model is validated by comparing its modal and dynamic responses with those obtained from a finite element model (FEM). Using this model, the effects of interfacial coupling methods, meshing methods, gear flexibility, and rotational effects on the system's dynamic behavior are systematically analyzed. The results demonstrate that, for large diameter-to-thickness ratios, the traditional rigid coupling method introduces significant deviations in modal analysis and resonance prediction. Conventional meshing simulation methods exhibit limitations in accurately predicting critical rotational speeds. The conventional model neglects the flexibility of the gear and the radial deformation of the hollow shaft, resulting in substantial errors in resonance prediction compared to the proposed model. These findings highlight the necessity of incorporating gear and shaft flexibility. Moreover, the gyroscopic effect (GE) is identified as the dominant contributor among rotational influences and warrants particular attention.</div></div>","PeriodicalId":50483,"journal":{"name":"European Journal of Mechanics A-Solids","volume":"116 ","pages":"Article 105852"},"PeriodicalIF":4.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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