International Journal of Mechanics and Materials in Design最新文献

{"title":"Nonlocal coupled thermoelasticity and diffusion with multiple relaxation times for hollow solids","authors":"Ahmed E. Abouelregal,&nbsp;Mohammed Aldandani,&nbsp;Marin Marin","doi":"10.1007/s10999-026-09952-y","DOIUrl":"10.1007/s10999-026-09952-y","url":null,"abstract":"<div><p>Classical Fourier and Fick laws fail to capture the coupled thermoelastic-diffusive behavior under extreme thermal and chemical stresses due to their prediction of infinite signal speeds and their neglect of microstructural interactions. This study presents a unified nonlocal continuum model for hollow cylindrical solids that integrates spatial nonlocality—accounting for long-range microstructural effects—with multiple relaxation times reflecting thermal inertia and diffusion memory. The resulting framework describes finite-speed wave propagation for thermal, elastic, and diffusive signals at micro- and nanoscales. Governing equations are derived and solved both analytically and numerically to examine how nonlocal parameters and relaxation times affect dynamic response. Findings demonstrate that nonlocality increases material stiffness and modifies wave profiles, while relaxation times critically regulate signal attenuation and dispersion—effects that are absent in classical theories. Validation against established models confirms superior accuracy under rapid transient conditions. This framework offers transformative applications: precise control in ultrafast laser processing, enhanced thermal management in advanced electronics, and improved reliability of diffusion-sensitive alloys for aerospace and nuclear technologies. Ultimately, the model provides an essential predictive tool for designing next-generation materials where coupled thermoelastic-diffusive interactions determine performance and durability.</p></div>","PeriodicalId":593,"journal":{"name":"International Journal of Mechanics and Materials in Design","volume":"22 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization design of viscoelastic dampers for tail drive shafting","authors":"Miaomiao Li,&nbsp;Xuehui Yang,&nbsp;Bingbing Qin,&nbsp;Xinyu Sun,&nbsp;Rupeng Zhu","doi":"10.1007/s10999-026-09956-8","DOIUrl":"10.1007/s10999-026-09956-8","url":null,"abstract":"<div><p>This paper addresses the lack of proper design methods and the current status of being in the engineering imitation stage in the research of viscoelastic dampers for supporting helicopter tail drive shafting by proposing a systematic optimal design approach. First, a dynamic model of the tail drive shaft coupled with a viscoelastic damper is created using the finite element method. The influence of different viscoelastic dampers on the vibration characteristics of the tail drive shaft during the transcritical process and at supercritical stable speeds is studied, after which a test bench is constructed for verification. Next, the impact of the material and structural parameters of the viscoelastic dampers on the vibration characteristics of the tail drive shaft is investigated, and the parameters with the most significant impact are identified. Finally, a surrogate model is created using back-propagation (BP) neural network, with the key parameters of the viscoelastic damper as the input and the maximum displacement amplitude of the tail drive shaft during the transcritical process as well as the displacement amplitude at supercritical stable speeds as the output. Furthermore, the optimal design of the viscoelastic damper is conducted based on the NSGA-II genetic algorithm to minimize the displacement amplitude of the tail drive shaft. Test results show that the optimized viscoelastic damper achieves a 29.05% reduction in the maximum amplitude of the long shaft of the tail drive shaft during the transcritical process and a 20.84% reduction in amplitude at stable speed, compared with the viscoelastic damper before optimization. This study provides a complete methodology from modeling and parameter analysis to optimization design, offering theoretical and practical guidance for the vibration suppression design of helicopter tail drive shafts.</p></div>","PeriodicalId":593,"journal":{"name":"International Journal of Mechanics and Materials in Design","volume":"22 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-objective optimization of stamping process based on physics-guided extra trees for large thin-walled parts","authors":"Xizhang Wen,&nbsp;Tong Zhu,&nbsp;Jiachang Wang,&nbsp;Xiangwei Xu,&nbsp;Yibo Wang,&nbsp;Song Zhang","doi":"10.1007/s10999-026-09950-0","DOIUrl":"10.1007/s10999-026-09950-0","url":null,"abstract":"<div><p>Stamping of large thin-walled metal covers involves complex multi-objective conflicts among cracking, wrinkling, and springback, where purely data-driven models often suffer from poor generalization under limited sample conditions. To address this, a Physics-Guided Extra Trees (PG-ET) collaborative optimization framework is proposed. The framework reformulates the optimization problem by introducing defect-oriented physical descriptors derived from plastic deformation and frictional instability mechanisms. First, a physics-guided feature pool containing high-order coupling descriptors is constructed, followed by target-specific feature decoupling using permutation importance analysis. Subsequently, Yeo-Johnson target transformation and the fully randomized partition mechanism of Extra Trees are combined to improve robustness against feature collinearity. The developed PG-ET model achieves high prediction accuracy: the absolute error for thinning is as low as 0.0024, the coefficient of determination (<i>R</i>^<i>2</i>) for thickening reaches 0.9662, and the <i>R</i>^<i>2</i> for springback prediction reaches 0.8637. Finally, the PG-ET surrogate is integrated with Non-dominated Sorting Genetic Algorithm II (NSGA-II) and Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) decision-making to identify the optimal process parameters. Industrial validation on a 55-inch television (TV) backplane demonstrates that, while preventing cracking, the proposed framework reduces macro-warpage by 48.5% and maximum thickening by 26.6%. The results indicate that embedding physically interpretable deformation descriptors into surrogate modeling effectively enhances optimization reliability for complex thin-walled forming.</p></div>","PeriodicalId":593,"journal":{"name":"International Journal of Mechanics and Materials in Design","volume":"22 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: Acoustic waves and moisture in a semiconductor thermoelastic medium with double porosity and three-phase lags subjected to the gravitational field","authors":"Saad Jamhan Aldosari,&nbsp;Murdhy Aldawsari,&nbsp;Atef Ismail,&nbsp;Mohamed I. M. Hilal","doi":"10.1007/s10999-026-09940-2","DOIUrl":"10.1007/s10999-026-09940-2","url":null,"abstract":"","PeriodicalId":593,"journal":{"name":"International Journal of Mechanics and Materials in Design","volume":"22 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Framing the significance of heat generation, radiation, and chemical interaction in unsteady magnetized nanofluid flow in a rotatory absorbent cone","authors":"B. Prabhakar Reddy,&nbsp;MD. Shamshuddin,&nbsp;L. Joseph Sademaki,&nbsp;S. O. Salawu","doi":"10.1007/s10999-026-09945-x","DOIUrl":"10.1007/s10999-026-09945-x","url":null,"abstract":"<div><p>Nanofluids have extensive applications and are utilized in technology, science, biomechanics, chemical industries and considerably many more. Motivated by this, the flow of a two-phase nanofluid model with mass and heat transfer over the unsteady mixed convective gyrating cone via a permeable medium subjected to thermal radiation, heat generation and chemical interaction is the focus of this study. The current model is based on inclusive nonlinear partial differential equations (PDEs), which are then renewed using similarity transformations into a comprehensive system of nonlinear ordinary differential equations (ODEs). The solutions of this system are obtained via the finite element approach. The computational results reveal that the cone rotation restrained the secondary flow structures, initiates fluid radial motion and alters the velocity profile. The magnetic field prudently affects the velocity as well thermal boundary layers and boosts the thermal regulation in the nanofluid system. The Brownian motion and thermophoresis jointly modulate nanoparticle propagation and concentration profiles close to the cone wall. The chemical reaction provides more insight into the concentration profile, especially in reactive or industrial fluid systems. Finally, validation has been conducted with existing literature and observed that our methodology exhibited good accuracy. Thus, the study configuration is applicable in biomedical transport, solar energy systems, industrial cooling, and reactive fluid technologies.</p></div>","PeriodicalId":593,"journal":{"name":"International Journal of Mechanics and Materials in Design","volume":"22 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On nonlinear coupled thermoelastic analysis of functionally graded beams","authors":"Ali Talebian,&nbsp;Mohammad Faraji Oskouie,&nbsp;Reza Ansari","doi":"10.1007/s10999-026-09941-1","DOIUrl":"10.1007/s10999-026-09941-1","url":null,"abstract":"<div><p>This study develops a <b>nonlinear coupled thermoelastic</b> formulation tailored for functionally graded beams subjected to large deflections under transient thermal conduction. The beam behavior is modeled using first-order shear deformation theory (FSDT) in conjunction with von Kármán strain–displacement relations to capture geometric nonlinearity. The governing equations are derived via Hamilton’s principle and discretized using the <b>variational differential quadrature</b> (VDQ) method. Time integration is performed through the Newmark-beta scheme. Thermo-mechanical properties of the functionally graded material are considered <b>temperature-dependent</b> and are dynamically updated to reflect realistic thermal behavior. The formulation is validated against benchmark solutions in both linear and uncoupled regimes to ensure accuracy. Parametric studies reveal that power-law index of functionally graded materials, geometric dimensions, boundary conditions, beam thickness, and heat flux intensity significantly influence the nonlinear thermoelastic response. Results indicate that geometric nonlinearity mitigates stress fluctuations and moderates’ deflection growth. Moreover, the interaction between power-law index and structural geometry plays a decisive role in balancing stiffness, thermal resistance, and deformation capacity. The proposed framework offers a reliable and adaptable computational tool for analyzing advanced FGM structures under complex thermal environments, with direct implications for high-performance engineering applications.</p></div>","PeriodicalId":593,"journal":{"name":"International Journal of Mechanics and Materials in Design","volume":"22 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the effect of geometrical parameters on energy absorption capability of two auxetic materials","authors":"Avinash Mohan,&nbsp;Jayaganthan Rengaswamy","doi":"10.1007/s10999-026-09943-z","DOIUrl":"10.1007/s10999-026-09943-z","url":null,"abstract":"<div><p>Auxetic cellular structures have attracted considerable attention for impact energy-absorption applications because their negative Poisson’s ratio (NPR) promotes deformation-induced densification and improved energy dissipation. However, the coupled influence of loading velocity and unit-cell geometry on the dynamic crushing behaviour of auxetic lattices remains insufficiently understood, particularly for hybrid re-entrant–chiral configurations. In this study, the dynamic compression behaviour of a re-entrant auxetic (REA) structure and a re-entrant chiral auxetic (RCA) structure is investigated using analytical modelling and finite element simulations. Both lattices are modelled as a 6 × 4 unit-cell assembly and compressed between rigid platens at impact velocities ranging from 5 to 200 m/s. The analytical model is developed to estimate the Poisson’s ratio and energy absorption capacity of the unit cells based on ligament bending and rotational deformation mechanisms. The numerical model is validated at both unit-cell and multi-cell levels by comparing deformation modes, Poisson’s ratio, and energy absorption with analytical predictions and published studies. A parametric investigation is then conducted to evaluate the influence of key geometric parameters, including internal angle, horizontal strut length, inclined strut length, and ring radius. The results show that deformation in the REA structure is primarily governed by ligament bending, which leads to localised collapse bands under dynamic loading. In contrast, the RCA structure exhibits a combined ligament-bending and node-rotation mechanism that promotes more distributed deformation. Increasing impact velocity increases plateau stress and specific energy absorption by inertia-induced stabilisation of ligament deformation. Geometric parameters strongly influence both auxetic response and specific energy absorption by controlling ligament slenderness and rotational kinematics. In particular, horizontal strut length significantly increases the energy absorption capacity, while inclined strut length and ring radius exhibit non-monotonic behaviour, suggesting the existence of favourable geometric configurations. These findings provide mechanistic insights and design guidelines for tailoring auxetic lattice geometries for impact-energy-absorption applications.</p></div>","PeriodicalId":593,"journal":{"name":"International Journal of Mechanics and Materials in Design","volume":"22 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lagrangian algorithm with steepest descent method applied to the planar mechanism synthesis problem using natural coordinates","authors":"Hernán A. Gonzalez Rojas,&nbsp;Enrique E. Zayas Figueras,&nbsp;Amelia E. Nápoles Alberro,&nbsp;Erick D. Chávez Pereda,&nbsp;Antonio J. Sánchez Egea","doi":"10.1007/s10999-026-09938-w","DOIUrl":"10.1007/s10999-026-09938-w","url":null,"abstract":"<div><p>This research introduces an approach, denoted as the Natural Coordinates Lagrangian Algorithm using the Steepest Descent Method (<span>(NCLA_{sdm})</span>) for the dimensional synthesis of planar mechanisms with the objective of determining the required geometric dimensions for the generation of a desired path. The proposed approach utilizes a Lagrangian optimization method that employs the Steepest Descent Method and natural coordinates related by the constraint equations defining the admissible configurations of the mechanism. The proposed method is validated through the synthesis of four mechanisms of varying complexity. The numerical examples shown are slider-crank mechanisms with and without slider eccentricity, a four-bar mechanism, and the Theo Jansen linkage. The results demonstrate a strong agreement between the desired paths and those generated by the synthesized mechanisms, even in highly complex mechanisms such as those of Theo Jansen.\u0000</p></div>","PeriodicalId":593,"journal":{"name":"International Journal of Mechanics and Materials in Design","volume":"22 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10999-026-09938-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonlinear flow control of SWCNT/MWCNT Maxwell nanofluid over an expanding sheet under convective heating incorporating magnetic dipole and Darcy–Forchheimer effects","authors":"R.K. Sahoo,&nbsp;Islom Kadirov,&nbsp;S.R. Mishra,&nbsp;Subhajit Panda","doi":"10.1007/s10999-026-09937-x","DOIUrl":"10.1007/s10999-026-09937-x","url":null,"abstract":"<div><p>In the various manufacturing processes as well as field of engineering, the flow of non-Newtonian nanofluid has tremendous effect because of its physical significance. Particularly, in recent scenario, the implementation of carbon nanotubes (CNT) presents its greatest impact in energy storage, chemical sensors, and structural composite materials. The ongoing analysis delves into the movement of a methanol-based SWCNT/MWCNT Maxwell nanofluid over an expanding sheet with a permeable surface. This work assesses the outcomes of thermal radiation and a magnetic dipole, focusing on the interaction of Darcy-Forchheimer drag force and its impact on inertial drag behavior. The convective condition in thermal boundary condition serves as novel approach for the enhanced thermal performance attributes. The specific transformation rules are adopted for the proposed designed model to get its standard non-dimensional form. Further, a shooting-based Runge–Kutta technique is employed for the solution of the transformed system of equations using MATLAB software. The major conclusions of the research demonstrate that that fluid speed declines as the ferromagnetic parameter gradually rises, while temperature field gradually intensifies with increasing Biot number and thermal radiation parameter. Furthermore, when the Biot number and thermal radiation parameter rise, so does the rate of heat transmission. The surface drag force falls with the augmentation in the viscous dissipation parameter and rises with greater solid volume fraction values.</p></div>","PeriodicalId":593,"journal":{"name":"International Journal of Mechanics and Materials in Design","volume":"22 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of variable viscosity, nanoparticle migration and magnetohydrodynamics on thin-film formation in lubricating blade coating process of Sisko nanofluid","authors":"Sabeeh Khaliq,&nbsp;Zaheer Abbas,&nbsp;Basma Souayeh,&nbsp;Huda Alfannakh","doi":"10.1007/s10999-026-09944-y","DOIUrl":"10.1007/s10999-026-09944-y","url":null,"abstract":"<div><p>This study presents a comprehensive hydrodynamic and transport analysis of the blade coating process involving shear-dependent non-Newtonian nanofluid. The model incorporates interfacial nonlinear slip, temperature-sensitive viscosity, Magnetohydrodynamics (MHD), and the coupled influences of Brownian motion and thermophoresis effects to capture realistic thin-film flow behavior and to improve coating uniformity in industrial applications. Lubrication Approximation Theory (LAT) simplifies mathematical governing expressions after non-dimensionalization and solved by numerical boundary value solver (bvp4c) alongwith fourth order Runge–Kutta method. The impact of non-Newtonian fluid rheology, velocity slip, viscosity variations, magnetic field, thermophoresis and Brownian motion on the heat transfer, uniform film thickness and blade load is discussed in detail. Findings reveal that Brownian motion enhances the temperature by 2% and substantially improves nanoparticle redistribution, homogenizing the concentration field. While thermophoresis drives nanoparticles toward cooler regions, resulting a 2% increase in temperature but leading to concentration depletion relative to normalized wall concentration at <i>y</i> = 1. While viscosity variations and shear-thinning behavior reduce coating thickness by 40.5% and 26.8%, the interplay of nanoparticle migration provides a mechanism for coating film stability. These results offer analytical guidance for the design and optimization of coating system under various operating conditions. Query ID=\"Q2\" Text=\"Please check and confirm if the author names and initials are correct.\" </p></div>","PeriodicalId":593,"journal":{"name":"International Journal of Mechanics and Materials in Design","volume":"22 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}