Mechanics Research Communications最新文献_第7页

On the wave propagation in unbounded space-fractional elastic solids and identification of its intrinsic microstructure based on Lagrange lattice 波在无界空间中的传播及其基于拉格朗日晶格的本征微观结构辨识

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-12-01 Epub Date: 2025-11-07 DOI: 10.1016/j.mechrescom.2025.104564

Andrea Francesco Russillo , Giuseppe Failla , Wojciech Sumelka

{"title":"On the wave propagation in unbounded space-fractional elastic solids and identification of its intrinsic microstructure based on Lagrange lattice","authors":"Andrea Francesco Russillo , Giuseppe Failla , Wojciech Sumelka","doi":"10.1016/j.mechrescom.2025.104564","DOIUrl":"10.1016/j.mechrescom.2025.104564","url":null,"abstract":"<div><div>This paper addresses the wave dispersion behavior and microstructure identification of space-fractional elastic bodies. Starting from the equation of motion, the exact analytical dispersion relation of an unbounded 1D space-fractional elastic body is found by seeking plane wave harmonic solutions. Building on the exact analytical dispersion relation of the unbounded 1D space-fractional elastic body, the fractional parameters (i.e., length scale and order of fractional derivative) that reproduce the wave dispersion behavior, in terms of frequency and group velocity, of a monoatomic lattice (Lagrange lattice) in the first Irreducible Brillouin Zone are found by enforcing appropriate matching conditions at the end of the first Irreducible Brillouin Zone. The distances between the dispersion curves and group velocity of the space-fractional elastic body and Lagrange lattice are investigated with respect to several metrics, demonstrating that the non-local space-fractional model homogenizes the Lagrange lattice microstructure.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"150 ","pages":"Article 104564"},"PeriodicalIF":2.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145520612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

On nonlinear mechanics of nonlocal elastic trusses 非局部弹性桁架的非线性力学研究

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-12-01 Epub Date: 2025-11-07 DOI: 10.1016/j.mechrescom.2025.104560

Raffaele Barretta, Marzia Sara Vaccaro, Daniele Ussorio

引用次数: 0

Design and optimization of mass-efficient tensegrity Michell truss with variable anchorage length 变锚固长度的高效张拉整体米歇尔桁架设计与优化

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-12-01 Epub Date: 2025-12-02 DOI: 10.1016/j.mechrescom.2025.104586

Ghulam Kazim, Sanaullah, Liu Heping, Luo Ani

{"title":"Design and optimization of mass-efficient tensegrity Michell truss with variable anchorage length","authors":"Ghulam Kazim, Sanaullah, Liu Heping, Luo Ani","doi":"10.1016/j.mechrescom.2025.104586","DOIUrl":"10.1016/j.mechrescom.2025.104586","url":null,"abstract":"<div><div>This research introduces a method for designing a cantilever tensegrity structure using Michell’s spiral theory, focusing on optimizing the anchorage length for minimal mass. The structural topology is first established by deriving geometric parameters, including spiral properties and complexity order. The equilibrium equation is derived using the method of joints, and a recursive expression is developed to calculate axial forces in all members. The minimum mass configuration is achieved by optimizing the anchorage length under buckling and yielding constraints across various complexity orders. Additionally, a dynamic equation is derived via the Lagrangian approach, treating nodal coordinates as generalized coordinates. The dynamic response of the Michell structure under base excitation is analyzed. Results reveal that structures with low-complexity order exhibit greater stability, with reduced deformation and more efficient force transmission compared to higher complexity order. This indicates the importance of complexity order selection in designing dynamically robust Michell structures. The research provides an efficient foundation for the mass optimal design of lightweight, high strength structures suitable for application in robotics, aerospace, and earthquake resistant construction.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"150 ","pages":"Article 104586"},"PeriodicalIF":2.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145684828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Feasible and robust optimisation of cable forces in suspended bridges: A two-stage metaheuristic approach 悬索桥缆索力的可行和稳健优化：两阶段元启发式方法

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-12-01 Epub Date: 2025-10-25 DOI: 10.1016/j.mechrescom.2025.104554

Ida Mascolo, Sina Sarfarazi, Mariano Modano

{"title":"Feasible and robust optimisation of cable forces in suspended bridges: A two-stage metaheuristic approach","authors":"Ida Mascolo, Sina Sarfarazi, Mariano Modano","doi":"10.1016/j.mechrescom.2025.104554","DOIUrl":"10.1016/j.mechrescom.2025.104554","url":null,"abstract":"<div><div>The adjustment of cable pretension in suspended-deck bridges is a critical inverse design problem, where feasibility and robustness are as important as accuracy. Conventional methods such as finite-element (FE) re-analysis or the Influence Matrix Method (IMM) provide algebraic solutions but often produce oscillatory or infeasible patterns once field constraints are applied. This study introduces a two-stage framework that integrates stiffness-based sensitivity analysis with constrained metaheuristic optimisation. In stage-1 a reduced-order banded influence operator is introduced, which reflects how changes at the cable scale propagate over a limited range before combining into the global deck deformation. The effective bandwidth is tied to hanger spacing and deck stiffness, giving a natural connection between actuator-level inputs and system-level response. In Stage-2, cable adjustments are determined through multi-objective optimisation that balances target matching, smoothness, symmetry, and bounded jack capacities. Two population-based strategies, Particle Swarm Optimisation (PSO) and Grey Wolf Optimisation (GWO), are benchmarked against convex regularization baselines on the Gravina Bridge (Italy). Both metaheuristics deliver symmetric, bounded, and contiguous force patterns that reproduce the target profile while remaining compatible with staged field operations. Robustness analysis under structured perturbations confirms near 14% reductions in mean and tail-risk errors relative to convex solutions, while reproducibility is ensured through constrained search and convex polishing. The results demonstrate that the framework provides accurate and constructible re-tensioning strategies, clarifying how scale interactions in cable–deck systems can be exploited for reliable design and maintenance.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"150 ","pages":"Article 104554"},"PeriodicalIF":2.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145419899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Prediction of the texture evolution during forming of an 6016 aluminum alloy based on VPSC and macroscopic anisotropic model 基于VPSC和宏观各向异性模型的6016铝合金成形织构演化预测

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-12-01 Epub Date: 2025-10-17 DOI: 10.1016/j.mechrescom.2025.104541

Rahul Rakshit, Benoit Revil-Baudard

{"title":"Prediction of the texture evolution during forming of an 6016 aluminum alloy based on VPSC and macroscopic anisotropic model","authors":"Rahul Rakshit, Benoit Revil-Baudard","doi":"10.1016/j.mechrescom.2025.104541","DOIUrl":"10.1016/j.mechrescom.2025.104541","url":null,"abstract":"<div><div>In this study, we present a computationally efficient way to predict the deformation behaviour and texture evolution during mechanical tests and sheet metal forming operations. A two-pronged approach is developed. An orthotropic yield criterion that represents with accuracy the engineering level material’s anisotropy and ensures computational efficiency is used to simulate the deep drawing process. The finite-element (FE) predicted strains are further used to inform the visco-plastic self-consistent (VPSC) crystal plasticity model to predict the texture in different regions of the fully drawn cylindrical cup. This approach is illustrated for a strongly anisotropic aluminium alloy. For this purpose, the available data from uniaxial tensile tests were utilised to determine the anisotropy coefficients associated with the orthotropic model and the crystallographic slip hardening parameters for the VPSC model, respectively. The capabilities of the VPSC model are first illustrated by comparing the experimental and predicted stress-strain response for various orientations as well as the anisotropy in the Lankford coefficients and post-test textures. Furthermore, using VPSC the evolution of plastic anisotropy during deep drawing process was also systematically studied and comparisons with available textures from various locations on the cup are reported. The good agreement with data show that this approach leads to accurate results while preserving computational efficiency.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"150 ","pages":"Article 104541"},"PeriodicalIF":2.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145366169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

On the stability of imperfect Von Mises arches 不完全Von Mises拱的稳定性

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-12-01 Epub Date: 2025-10-20 DOI: 10.1016/j.mechrescom.2025.104542

Antonio Capsoni

引用次数: 0

Rapid analysis of bending in curvature-adaptive tpms shells using higher-order shear deformation theory 基于高阶剪切变形理论的曲率自适应tpms壳弯曲快速分析

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-12-01 Epub Date: 2025-11-24 DOI: 10.1016/j.mechrescom.2025.104577

Sepide Nosrati , Omid Rahmani , Seyed Amirhosein Hosseini

{"title":"Rapid analysis of bending in curvature-adaptive tpms shells using higher-order shear deformation theory","authors":"Sepide Nosrati , Omid Rahmani , Seyed Amirhosein Hosseini","doi":"10.1016/j.mechrescom.2025.104577","DOIUrl":"10.1016/j.mechrescom.2025.104577","url":null,"abstract":"<div><div>This work presents a fast and effective computational approach to study and optimize the bending behavior of triply periodic minimal surface (TPMS) shells under diverse curvatures and porosities. By coupling Navier’s analytical solution with bending load from higher-order shear deformation theory (HSDT), we systematically study the influences of shell curvature (spherical, hyperbolic, elliptical, cylindrical), porosity distribution (graded and uniform), and TPMS topology (Primitive, Gyroid, IWP) on structural performance. The developed governing equations for doubly curved shells are solved effectively, leading to rapid prediction of deflections and definition of optimal geometries.</div><div>A key and significant finding is that shells with Porosity Distribution I (PD I)—where material density peaks at the surfaces and porosity is highest at the mid-plane—demonstrate markedly superior bending stiffness. Contrary to perhaps intuitive assumptions that a dense core might be optimal, this surface-dense configuration maximizes flexural rigidity by placing material where bending stresses are highest. Most notably, Gyroid-based shells with PD I porosity achieve a specific stiffness up to 40% greater than conventional designs. This underscores the critical importance of curvature-induced stress redistribution and strategic porosity grading for minimizing bending deformation and maximizing structural efficiency in lightweight applications.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"150 ","pages":"Article 104577"},"PeriodicalIF":2.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Bacterial inactivation mechanisms under impact loading generated by ultrasonic cavitation 超声空化作用下细菌在冲击载荷下的失活机制

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-12-01 Epub Date: 2025-11-12 DOI: 10.1016/j.mechrescom.2025.104569

Maya Fitriyanti , Andrew Tanuwijaya , Bill Hakim , Mochamad Hafid Herwanto , Bentang Arief Budiman , Ignatius Pulung Nurprasetio , Poetro Sambegoro

{"title":"Bacterial inactivation mechanisms under impact loading generated by ultrasonic cavitation","authors":"Maya Fitriyanti , Andrew Tanuwijaya , Bill Hakim , Mochamad Hafid Herwanto , Bentang Arief Budiman , Ignatius Pulung Nurprasetio , Poetro Sambegoro","doi":"10.1016/j.mechrescom.2025.104569","DOIUrl":"10.1016/j.mechrescom.2025.104569","url":null,"abstract":"<div><div>Ultrasonication for bacterial inactivation operates by subjecting bacterial surfaces to impact loads generated through ultrasonic wave-induced cavitation. Understanding the inactivation mechanism caused by these impact loads is crucial for optimizing ultrasonication strategies. This study employs explicit dynamic finite element simulations to examine the failure mechanisms of bacterial surfaces under cavitation-generated impact, with <em>Escherichia coli</em> and <em>Staphylococcus aureus</em> selected as model bacteria due to their distinct cell wall structures, shapes, and pathogenic relevance. The simulations identify three primary failure modes, perforating, bursting, and transition, depending on pressure distribution, aligning with previously reported experimental data. Additionally, the effects of pressure variation and distribution on bacterial surfaces are analyzed and presented as a guideline for developing more efficient ultrasonic inactivation strategies.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"150 ","pages":"Article 104569"},"PeriodicalIF":2.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal buckling of doubly-curved FG sandwich shell with composite-foam core under Pasternak shear interaction 帕斯捷尔纳克剪切作用下复合泡沫芯双弯曲FG夹芯壳的热屈曲

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-12-01 Epub Date: 2025-11-19 DOI: 10.1016/j.mechrescom.2025.104575

Adem Fatih Ozalp

{"title":"Thermal buckling of doubly-curved FG sandwich shell with composite-foam core under Pasternak shear interaction","authors":"Adem Fatih Ozalp","doi":"10.1016/j.mechrescom.2025.104575","DOIUrl":"10.1016/j.mechrescom.2025.104575","url":null,"abstract":"<div><div>This paper presents a comprehensive thermal buckling analysis of doubly curved functionally graded (FG) sandwich shells composed of temperature-dependent FGM face sheets and a composite-foam core resting on a Pasternak elastic foundation. The formulation is developed using a higher-order shear deformation theory (HSDT) that incorporates nonlinear temperature variation and realistic transverse shear deformation through a trigonometric function. The governing equations are derived and solved via Navier’s method under steady-state thermal loading. Parametric studies show that curvature, core porosity type, gradation index, and foundation stiffness significantly affect the critical buckling temperature. Increasing the curvature ratio improves stability, raising the critical buckling temperature (SSSS) by up to 17 % (spherical), 12 % (hyperbolic) and 45 % (cylindrical) while higher Pasternak shear stiffness improves resistance (CCCC) by nearly 60 %. In contrast, increasing the gradation index (toward metal-rich composition) or core porosity reduces the buckling temperature by 25–46 % (SSSS-CCCC). Among the three porosity patterns, Type III (uniform) core exhibits the highest thermal stability owing to its evenly distributed stiffness. Validation with published data confirms excellent agreement, with deviations below 2 %. The results demonstrate that the proposed model captures the coupled effects of material gradation, temperature dependency, curvature, and elastic foundation in a unified analytical framework. The study provides design criteria for lightweight, thermally stable FGM sandwich shells, and establishes a reference for benchmarking future numerical or experimental studies involving hybrid cores and curved geometries.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"150 ","pages":"Article 104575"},"PeriodicalIF":2.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Tuned mass-bar damper: A comparative study in vibration reduction of seismic-induced building structures 调谐质量杆阻尼器：地震诱发建筑结构减振的比较研究

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-12-01 Epub Date: 2025-11-08 DOI: 10.1016/j.mechrescom.2025.104566

Van-Tuan Nguyen , Ngoc-An Tran , VanBinh Bui , Hai-Le Bui

引用次数: 0