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A Special Issue of Materials (ISSN 1996-1944) belonging to the section "Advanced Composites".

Deadline for manuscript submissions: 20 December 2026 | Viewed by 3191

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Editors

Dr. Rui Zhong

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Guest Editor

College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
Interests: vibration and acoustics of composite structures; optimisation with uncertainty; computational mechanics of composite structures

Prof. Dr. Qingshan Wang

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Guest Editor

College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
Interests: composites materials; structural dynamics; digital modelling of structural dynamics; digital twins for structures; advanced computational dynamics; advanced numerical modeling
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Dr. Zhengxiong Chen

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School of Mechanical and Electrical Engineer, Guilin University of Electronic Technology, Guilin 541004, China
Interests: composite damping sandwich structure; vibro-acoustic behaviour of structure-cavity coupling system

Special Issue Information

Dear Colleagues,

Composite materials have become the material of choice in high-end equipment fields such as aerospace, wind power generation, and modern construction due to their excellent lightweight characteristics, excellent specific strength, and highly designable properties. However, the vibration behavior of composite structures under dynamic loading presents significant anisotropic characteristics, complex damping mechanisms, and cross-scale coupling effects, which pose significant challenges to their dynamic performance, fatigue reliability, and noise suppression.

This Special Issue of Materials focuses on the vibration behavior of composite structures, aiming to bring together the most innovative theoretical breakthroughs, numerical simulation methods, and experimental characterization techniques in this field. The Special Issue focuses on the following research directions: (a) theoretical modeling and numerical simulation, such as analytical and numerical methods, multi-scale dynamics modeling, and nonlinear vibration analysis; (b) experimental characterization techniques, such as advanced testing methods, extreme environmental vibration test, damping performance evaluation; (c) vibration control and optimization, such as passive/active control technologies, smart material applications, and machine learning-assisted optimization. This Special Issue especially welcomes original research on advanced composite systems and their engineering applications.

Dr. Rui Zhong
Prof. Dr. Qingshan Wang
Dr. Zhengxiong Chen
Guest Editors

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Keywords

composite structures
vibration modeling and analysis
analytical and numerical methods
experimental characterization
vibration control and optimization

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Published Papers (4 papers)

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Research

26 pages, 519 KB

Open AccessArticle

Single-Criterion Optimisation with Consideration of Uncertainties of the Composite Multi-Layer Slabs

by Przemysław Smela and Bartosz Miller

Materials 2026, 19(11), 2384; https://doi.org/10.3390/ma19112384 - 3 Jun 2026

Viewed by 469

Abstract

This paper presents a novel, efficient computational framework for the optimisation of the fundamental frequency of multi-layered composite slabs with consideration of uncertainties. The approach is based on Finite Element Method (FEM) data generation, Deep Neural Network (DNN) surrogate modelling, deterministic optimisation using the genetic algorithm (GA), Morris Sensitivity Analysis (SA), and quantile-based optimisation, including uncertainties and using the GA. Different boundary condition configurations are considered. The surrogate model is trained on FEM-generated samples and subsequently used to replace expensive modal analyses during optimisation, significantly reducing the optimisation evaluation cost for one boundary condition variant. The proposed method achieves near-identical optimal non-dimensional parameter

Ω

values to those reported in the literature for Bayesian Optimisation (BO), with discrepancies of less than 0.5%. To improve robustness to manufacturing tolerances, an additional uncertainty-aware optimisation is performed, in which model parameters are perturbed with normally distributed noise. By maximising the 5% quantile of the non-dimensional parameter

Ω

, robust optimal solutions are obtained with minimal loss in performance. Overall, the DNN-GA framework enables fast and accurate optimisation of composite laminates and provides both deterministic and robust design recommendations at a fraction of the computational cost of traditional FEM-based optimisation workflows. Full article

(This article belongs to the Special Issue Research on Vibration of Composite Structures)

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35 pages, 10085 KB

Open AccessArticle

Mechanical Performance-Enhanced Parabolic Curved-Beam Lattice Structures: Multi-Objective Optimization and Theoretical Modeling

by Dongdong Min, Qingshan Wang, Long Yu, Ziyun Jin and Rui Zhong

Materials 2026, 19(11), 2372; https://doi.org/10.3390/ma19112372 - 2 Jun 2026

Viewed by 397

Abstract

Lattice structures offer superior mechanical properties, including lightweight design and performance tailorability, due to their unique geometric configurations and porous characteristics. This study proposes a novel lattice structure, namely the parabolic curved-beam (PCB) lattice structure, in which the struts within the unit cells are designed in a parabolic shape. Based on the principle of minimum potential energy, a theoretical model for the mechanical behavior of the proposed structure under compressive loading was derived. The influence of structural parameters on mechanical performance was systematically analyzed, and the accuracy and validity of the theoretical model were verified through experimental design. Additionally, the advantages of the structure were explored through comparison with the traditional body-centered cubic (BCC) lattice structure. Subsequently a response surface surrogate model was constructed using orthogonal experimental design, yielding quadratic regression equations for key mechanical indicators, including Young’s modulus, specific energy absorption (SEA), and yield strength. The results demonstrate that optimal mechanical performance is achieved with a strut curvature of 0.55 mm⁻¹, a cross-sectional area of 1.22 mm², and a unit cell size of 5 mm. Under these design parameters, the structure exhibits a Young’s modulus of 4152.85 MPa, an SEA of 3.86 J/g, and a yield strength of 17.02 MPa. The findings demonstrate that the present study employs theoretical analysis and optimization design to achieve mechanical characterization and performance optimization of the designed lattice structure. It shows broad application prospects in fields such as aerospace, vehicle engineering, and protective equipment, where there is an urgent demand for lightweight and high-strength materials. This work provides new insights and a theoretical basis for the design and performance optimization of multi-functional integrated structures in engineering practice. Full article

(This article belongs to the Special Issue Research on Vibration of Composite Structures)

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21 pages, 6110 KB

Open AccessArticle

Stochastic Dynamic Analysis and Vibration Suppression of FG-GPLRC Cylinder–Plate Combined Structures with Distributed Dynamic Vibration Absorbers

by Qingtao Gong, Ai Zhang, Yao Teng and Yuan Wang

Materials 2026, 19(6), 1082; https://doi.org/10.3390/ma19061082 - 11 Mar 2026

Viewed by 595

Abstract

Cylinder–plate combined structures (CPCS) are widely used in aerospace, marine engineering, and offshore platform systems. During service, they are frequently subjected to stochastic excitations induced by turbulent boundary layers, acoustic loads, hydrodynamic disturbances, and broadband operational vibrations. Excessive random vibration responses may significantly reduce structural reliability, accelerate fatigue damage, and compromise operational safety. To address these engineering challenges, a unified stochastic dynamic analysis and vibration suppression framework is established for functionally graded graphene platelet-reinforced composites (FG-GPLRC) CPCS equipped with distributed dynamic vibration absorbers (DVAs). Adopting the First-order Shear Deformation Theory (FSDT), a comprehensive energy functional for the CPCS is established, in which the penalty method is implemented to impose boundary conditions and ensure interface continuity. Subsequently, the Pseudo-excitation Method (PEM) is utilized to convert the stochastic vibration analysis into an equivalent deterministic harmonic problem, and the governing equations are spatially discretized by combining the spectral geometric method (SGM) with the Ritz variational procedure, enabling efficient evaluation of power spectral density (PSD) and root-mean-square (RMS) responses. The reliability of the proposed model is verified through a series of numerical validation comparisons. On this basis, comprehensive parametric investigations are conducted to assess how material properties, structural geometries, and critical DVA parameters influence system behavior. The results demonstrate that the incorporation of distributed DVAs can achieve superior vibration suppression performance. This study provides an efficient and reliable theoretical framework for stochastic vibration analysis and damping design of advanced composite plate–shell coupled structures operating in complex random environments, offering important theoretical support for dynamic optimization design in aerospace and marine engineering applications. Full article

(This article belongs to the Special Issue Research on Vibration of Composite Structures)

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19 pages, 5840 KB

Open AccessArticle

Research on Energy Localization and Vibration Suppression of Axially Functionally Graded Porous Beams

by Qiuhua Wang, Rongjiang Tang, Sai Zhang, Kefang Cai, Wenwen Wang and Xuekang Zhang

Materials 2025, 18(18), 4306; https://doi.org/10.3390/ma18184306 - 14 Sep 2025

Viewed by 898

Abstract

Functionally graded porous beam (FGPB) structures are widely used in engineering due to their light weight, high strength, and vibration-damping performance. However, their energy localization and vibration suppression characteristics remain largely unexplored. To address this gap, this study proposes an axially functionally graded porous beam (AFGPB) structure capable of achieving energy localization and suppressing vibration transmission. A semi-analytical model is first developed within the Rayleigh–Ritz framework, using Gaussian functions as basis functions to accurately represent the displacement field. The accuracy of the model is validated by comparing its vibration characteristics with those obtained using the finite element method (FEM). Subsequently, the vibration behavior of double-AFGPB with simply supported boundary constraints is investigated. A series of numerical results are presented in this study to analyze the influence of porosity parameters on the energy localization effect and vibration suppression performance. Results reveal that the porosity power-law index N and truncation coefficient δ play key roles in energy localization and vibration suppression performance. When N ≥ 4, the energy localization effect and the vibration attenuation of the double-AFGPB become more pronounced with increasing N and decreasing δ, particularly in the low-frequency range. Full article

(This article belongs to the Special Issue Research on Vibration of Composite Structures)

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