Applications in engineering science最新文献

{"title":"Digitizing SMEs in the EU: A scalable model for retrofitting machinery to Industry 4.0","authors":"Gabriel Gašpar ,&nbsp;Roman Budjač ,&nbsp;Maroš Valášek ,&nbsp;Martin Bartoň ,&nbsp;Tomáš Meravý ,&nbsp;Maximilián Strémy","doi":"10.1016/j.apples.2025.100230","DOIUrl":"10.1016/j.apples.2025.100230","url":null,"abstract":"<div><div>Small and Medium-sized Enterprises (SMEs) have faced significant economic challenges since the COVID-19 pandemic, compounded by high inflation, rising energy costs, and the cessation of government financial support. War-related disruptions in Europe have further exacerbated these issues. As the backbone of the European economy, SMEs must embrace Industry 4.0 to remain competitive. However, many lack the resources or expertise to adopt smart technologies. This article proposes a cost-effective, scalable model to guide SMEs in transitioning towards Industry 4.0 by retrofitting existing machinery. By assessing machinery readiness and identifying critical areas for digitization, the model enables targeted investments that optimize production and reduce costs. A gradual, tailored approach ensures alignment with SMEs’ financial and technical capacities, fostering modernization and long-term growth. The successful implementation of the AFB production system highlights the feasibility of retrofitting existing systems to meet modern manufacturing demands.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"23 ","pages":"Article 100230"},"PeriodicalIF":2.2,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parametric study of permanent magnet eddy current brake considering demagnetization, temperature, edge, and skin effects: Numerical and experimental investigation","authors":"Hussein Hassanpour,&nbsp;Salman Ebrahimi-Nejad,&nbsp;Morteza Mollajafari","doi":"10.1016/j.apples.2025.100235","DOIUrl":"10.1016/j.apples.2025.100235","url":null,"abstract":"<div><div>This paper presents an improved mathematical model and parametric analysis of the developed model for the eddy current brake system using the finite element method. The analytical model is developed to consider terms such as temperature, skin, edge, and demagnetization effects that are neglected in the simplified models of other studies conducted in the literature review. Also, the presented mathematical model has been validated experimentally. In the performance parametric study, the variables related to the rotor and stator, including initial speed, material, diameter, thickness, and moment of inertia of the disk, as well as the position, number, and arrangement of permanent magnets, were investigated. The results of the numerical analysis of the improved model compared to the simple basic model show that the newly developed model is much closer to the experimental study results in terms of the braking torque trend than the simplified model, and its initial and maximum values are 3 and 4 percent more consistent, respectively. Also, the parametric analysis results show that an aluminum disc is better than other selected materials, and increasing the disk’s radius produces more braking torque than increasing its thickness. In the case of the stator, to obtain the maximum amount of braking torque, the best arrangement of permanent magnets is to utilize them on a double side, to use smaller and more magnets than larger and fewer magnets, and to locate them at a distance from the edge of the disk.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"22 ","pages":"Article 100235"},"PeriodicalIF":2.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the convolutive development of elastic substrate media as nano foundation","authors":"D. Indronil,&nbsp;IM Nazmul","doi":"10.1016/j.apples.2025.100234","DOIUrl":"10.1016/j.apples.2025.100234","url":null,"abstract":"<div><div>This study introduces a novel framework for developing models of elastic substrate foundations using an integral convolution approach. The proposed methodology systematically breaks down the applied load function into integral components and employs a multiplicative kernel transformation to derive the governing equations for substrate behavior. By extending traditional foundation models like the Winkler and Pasternak models, this formulation incorporates shear interactions and spatial variations in material properties, thereby addressing limitations in conventional approaches. The resulting equations effectively capture both local and global effects of applied loads, providing a more accurate representation of substrate behavior in heterogeneous, anisotropic, and non-uniform systems. The validity of the proposed model is verified through comparisons with established theories, demonstrating its precision and broader applicability to complex structural scenarios. The convolution-based formulation also enhances the analysis of advanced loading conditions and nonlinear material responses, making it highly adaptable to real-world engineering applications. The analytical and numerical results of this study contribute significantly to structural mechanics, especially in the design and analysis of beams, plates, and other structural elements interacting with elastic substrates. The findings have potential applications in nano- and micro-scale engineering, geotechnical studies, and advanced material modeling, highlighting the importance of nonlocal elasticity in contemporary structural analysis.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"22 ","pages":"Article 100234"},"PeriodicalIF":2.2,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transverse vibrations and stability of viscoelastic axially moving Rayleigh beams under thermal fields: An analytical approach","authors":"Farzam Fatehi sichani ,&nbsp;Ali Mokhtarian ,&nbsp;Shahram Babadoust ,&nbsp;Soheil Salahshour","doi":"10.1016/j.apples.2025.100233","DOIUrl":"10.1016/j.apples.2025.100233","url":null,"abstract":"<div><div>In this work, the flexural vibrations and stability of viscoelastic beams under axial motion and thermal fields are investigated using Rayleigh beam theory. The viscoelastic behavior is modeled through the Kelvin-Voigt and Maxwell models, and the governing differential equation is derivative utilizing Hamilton's principle. To create a more realistic model, thermal stresses in the beam are simulated using both linear and non-linear models. An innovative analytical solution method for these equations is presented, employing a power series approach to solve equations. The research provides an explicit mathematical expression for the mixed vibration modes of the beam under axial motion. Various parameters, such as rotational inertia, linear and non-linear thermal stresses, structural damping, and axial movement speed, are analyzed for their effects on the dynamic characteristics and instability of viscoelastic Rayleigh beams under axial motion. The findings indicate that incorporating rotational inertia and Rayleigh beam theory reduces the natural frequencies at low axial speeds but consistently increases the system's critical speed. Furthermore, rotational inertia induces distortions in the vibration mode shapes. Notably, the impact of rotational inertia on the second mode shape is significant, resulting in the loss of the nodal point in the second vibration mode shape of the beam under axial motion.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"22 ","pages":"Article 100233"},"PeriodicalIF":2.2,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence analysis of parameters of thermal aging laminated rubber bearing under cyclic shear loads","authors":"Junwei Wang ,&nbsp;Fuqiang Zhao ,&nbsp;Zihan Guo ,&nbsp;Yifan Song","doi":"10.1016/j.apples.2025.100229","DOIUrl":"10.1016/j.apples.2025.100229","url":null,"abstract":"<div><div>Composite rubber bearing is an important supporting component in bridge structure system, its aging and shear performance will affect the safety of the whole structure. However, due to the complexity of LRB specifications and sizes, the shear properties of aging LRB under different parameters were studied. In this study, the thermal aging and shear tests of 12 LRBs of the same specifications were first carried out, and the test results were taken as a reference, and the finite element model was established to select the constitutive model and determine the parameters, and finally the constitutive model and parameters consistent with the test were determined. Then, LRBs with different shape coefficient, diameter and number of layers were established, and shear simulation was carried out respectively to compare with the shear performance of the test supports, and the changes of parameters such as maximum shear force, energy dissipation, equivalent shear stiffness, initial sliding displacement and sliding distance generated by LRBs of different specifications at different shear stages were studied. The results show that for LRB of the same specifications, aging does not affect the maximum shear force, but the hardness and energy dissipation of rubber material increase with the aging time, and the initial sliding distance decreases with the aging time. For LRB with different parameters, under the same aging time, the maximum shear force and energy dissipation increase with the increase of shear deformation, and the equivalent shear stiffness decreases with the increase of shear degree. The maximum shear force, energy dissipation and initial shear stiffness of LRB increase with the increase of shape coefficient and diameter. The number of layers of the LRB does not affect the maximum shear force, but the energy dissipation increases with the increase of the number of layers, and the equivalent shear stiffness decreases with the increase of the number of layers. The larger the shape factor, diameter and layer number of LRB, the more likely it is to slip. Therefore, the influence of bearing parameters on the shear performance of LRB should be considered comprehensively when designing LRB in actual engineering.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"22 ","pages":"Article 100229"},"PeriodicalIF":2.2,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of box girder bridge widening techniques: Reinforced Rib vs. Strut solutions","authors":"Dac-Duc Nguyen","doi":"10.1016/j.apples.2025.100228","DOIUrl":"10.1016/j.apples.2025.100228","url":null,"abstract":"<div><div>Optimizing existing bridge infrastructure is crucial with the increasing demands of urbanization and traffic. This study investigates methods to enhance the structural performance of single-cell box girder bridges by implementing reinforcing ribs and struts. Focusing on the Tan De Bridge in Thai Binh, Vietnam - a cantilever bridge using a single-cell box girder, the research evaluates load-bearing capacity, deflection, and torsional resistance across three cross-sectional designs: the original single box girder, a box girder with transverse stiffening ribs, and a strutted box girder. The study uses ANSYS Mechanical software for three-dimensional modeling and simulation to examine natural vibration frequencies, stress distribution, and deflection under HL93 loading conditions. ANSYS Mechanical's finite element analysis capabilities allow for a detailed assessment of local and global structural behaviors, providing insights into the different cross-sections' dynamic stability and stress responses. Results indicate that reinforcing ribs and struts significantly improve the bridge's structural integrity. Reinforcing ribs offer superior cross-bridge stiffness, while struts provide optimal stress distribution and reduce flange instability. The study highlights the exceptional flexural resistance of the strutted box girder under eccentric loading, underscoring its potential to optimize bridge design for urban infrastructure demands while ensuring robust structural performance. These findings emphasize the effectiveness of these methods in meeting urban infrastructure needs by facilitating the expansion of bridge width while preserving structural stability and performance.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"22 ","pages":"Article 100228"},"PeriodicalIF":2.2,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling and performance analysis of a pneumatic steering system to enhance maneuverability in T-55 Armored Vehicles","authors":"Lemma Nigussie,&nbsp;Kumlachew Yeneneh","doi":"10.1016/j.apples.2025.100232","DOIUrl":"10.1016/j.apples.2025.100232","url":null,"abstract":"<div><div>This study presents the development and analysis of a pneumatic steering mechanism for the T-55 tank, addressing challenges inherent in traditional manual systems. These systems require excessive physical effort due to high resistance in linkages, leading to operator fatigue and reduced maneuverability. The proposed mechanism integrates a pneumatic cylinder and “rocker arm to convert linear motion into precise rotational control, enhancing steering performance and driver comfort. The design leverages compressed air as a lightweight, safe, and responsive medium, ensuring adaptability to diverse operational conditions. Structural analysis via finite element methods (FEA) confirmed the mechanism’s durability, with the rocker arm exhibiting a maximum von Mises stress of 46 MPa, well below the material’s yield strength of 200 MPa. Fatigue analysis further demonstrated the mechanism’s capacity to endure over one million load cycles, ensuring long-term reliability. Dynamic simulations using MSC.ADAMS validated the system’s performance. The piston stroke, ranging from 0 to 150 mm, allowed precise control of steering linkages. Motion analysis confirmed a free travel distance of 132.5 mm, aligning with practical requirements for T-55 steering systems. The pneumatic system also reduced operator effort by over 50% compared to manual systems, significantly improving operational efficiency. Compared to traditional systems, the pneumatic mechanism enhances maneuverability, enabling smooth directional changes in challenging terrains while reducing driver strain. Its modular design facilitates seamless integration with existing tank frameworks, minimizing modifications. This work demonstrates the potential of pneumatic systems to modernize tracked vehicle steering mechanisms, providing enhanced agility, reliability, and safety. The findings ensure that tanks like the T-55 remain highly effective in modern combat scenarios.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"22 ","pages":"Article 100232"},"PeriodicalIF":2.2,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On mesh refinement procedures for polygonal virtual elements","authors":"Daniel van Huyssteen ,&nbsp;Felipe Lopez Rivarola ,&nbsp;Guillermo Etse ,&nbsp;Paul Steinmann","doi":"10.1016/j.apples.2025.100222","DOIUrl":"10.1016/j.apples.2025.100222","url":null,"abstract":"<div><div>This work concerns the application of adaptive refinement procedures to meshes of unstructured polygonal virtual elements. Adaptive refinement indicators previously proposed by the authors, and investigated for meshes of structured quadrilateral elements, are studied in more general applications. Specifically, the performance of the indicators is studied on unstructured polygonal meshes, and for cases of compressible and nearly-incompressible materials. Localized refinement of unstructured meshes is a non-trivial task as the algorithm must be robust, and must accommodate a wide variety of geometric possibilities. To this end, an element refinement algorithm is presented based on strategic seeding of Voronoi tessellations and is suitable for both structured and unstructured meshes. Furthermore, it is not known <em>apriori</em> whether the previously proposed refinement indicators will be reliable or effective in the presence of unstructured mesh geometries and nearly-incompressible materials. Thus, the performance of the refinement procedures is studied through a broad numerical campaign. The results demonstrate that the high degree of efficacy and efficiency previously exhibited by the adaptive procedures is also achieved in the cases of irregular unstructured/Voronoi meshes and near-incompressibility.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"22 ","pages":"Article 100222"},"PeriodicalIF":2.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of vertical drill-string mathematical modelling","authors":"Jasem M. Kamel ,&nbsp;Asan G.A. Muthalif ,&nbsp;Abdulazim H. Falah","doi":"10.1016/j.apples.2025.100227","DOIUrl":"10.1016/j.apples.2025.100227","url":null,"abstract":"<div><div>This work aims to elucidate the fundamental concepts and approaches for modelling the vertical rotary drilling system and analysing drill string vibrations through a comprehensive literature review. It offers a detailed examination and critical discussion for the discrete and distributed mathematical modelling vibration along with associated boundaries conditions for low and high frequency oscillations. <strong>Additionally, this study discusses experimental models and their actual applications, highlighting their role in validating theoretical models and improving drilling performance.</strong> This study presents a thorough overview of existing literature on vertical drill string vibration problems, making it a valuable resource for researchers in the field. The study not only synthesizes existing knowledge but also seeks to guide future research efforts in addressing and mitigating the complex challenges associated with drill string vibrations.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"22 ","pages":"Article 100227"},"PeriodicalIF":2.2,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing active suspension systems with robust h∞ control and adaptive techniques under uncertainties","authors":"Kumlachew Yeneneh,&nbsp;Menelik Walle,&nbsp;Tatek Mamo,&nbsp;Yared Yalew","doi":"10.1016/j.apples.2025.100225","DOIUrl":"10.1016/j.apples.2025.100225","url":null,"abstract":"<div><div>This study presents a transformative approach to active suspension control through the development of a hybrid robust-adaptive framework that synergistically combines three advanced techniques: μ-synthesis enhanced H∞ control, model reference adaptation, and real-time frequency-domain optimization. The novel architecture overcomes fundamental limitations in conventional systems by simultaneously addressing (i) parametric uncertainties through structured robustness margins (μ &lt; 1 for ±25 % variations in mass/stiffness), (ii) unstructured road disturbances via adaptive gain scheduling, and (iii) resonant vibrations using closed-loop FFT analysis with 50 ms spectral updates. The controller's dual-degree-of-freedom design introduces a breakthrough solution where the H∞ core guarantees stability while the adaptive module dynamically adjusts damping ratios and stiffness coefficients through Lyapunov-based parameter estimation, achieving 40 % faster convergence than fixed-gain alternatives. Comprehensive simulations under ISO-standardized road profiles demonstrate unprecedented performance: 87.1 % reduction in suspension travel (0.113 m to 0.015 m) and 49.3 % decrease in body acceleration (6.38m/s² to 3.73m/s²) versus passive systems, while maintaining 18 % lower energy consumption than traditional H∞ implementations. The frequency-domain optimization proves particularly effective, reducing resonant peak magnitudes by 62–75 % in the critical 1–4 Hz comfort range and 55 % at the 15 Hz wheel-hop frequency. Practical implementation advantages include compatibility with standard automotive sensors (requiring only accelerometers and displacement sensors), modest computational load (executable on 100 MHz automotive-grade processors), and self-calibrating capability that eliminates manual tuning. These advancements position the framework as an ideal solution for next-generation vehicles, with demonstrated applicability to electric platforms (through regenerative damping integration) and autonomous systems (via V2X communication-enabled predictive adaptation). The research establishes new theoretical foundations for uncertainty management in vehicle dynamics while delivering a commercially viable control strategy validated under realistic operating conditions.</div></div>","PeriodicalId":72251,"journal":{"name":"Applications in engineering science","volume":"22 ","pages":"Article 100225"},"PeriodicalIF":2.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143913105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}