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Open research questions in Composite Structure Analysis and Optimization

48 unresolved questions extracted from the limitations and future-work sections of 747 Composite Structure Analysis and Optimization papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The study identifies a gap in the literature by revealing that no previous study of this kind has been conducted. The study aims to fill this gap by analyzing the thermomechanical vibration behavior of doubly curved sandwich shallow shells.

    Thermomechanical postbuckled vibration response of doubly curved sandwich shallow shells with FGM core layer and hybrid face layers · 2026 · DOI

  • The interaction effects between gradient indexes nx and nz on higher-order modes (beyond the fundamental frequency) of bidirectional FG beams have not been systematically characterized across the full range of gradient parameters.

    EFFECT OF MATERIAL COMPOSITION ON FREE VIBRATION OF BIDIRECTIONAL FUNCTIONALLY GRADED BEAM VIA A QUASI-3D THEORY · 2026 · DOI

  • The paper lacks experimental validation of the quasi-3D theoretical predictions for bidirectional FG beams; fabrication and modal testing of actual bidirectional functionally graded beam specimens with the four material composition types is needed.

    EFFECT OF MATERIAL COMPOSITION ON FREE VIBRATION OF BIDIRECTIONAL FUNCTIONALLY GRADED BEAM VIA A QUASI-3D THEORY · 2026 · DOI

  • Originality/value The buckling analysis of BIFG plates explores novel combinations of grading indices, aspect ratios and boundary conditions that have not been explored before.

    A simple refined plate theory for buckling problems of in-plane bidirectional functionally graded plates under various boundary conditions · 2026 · DOI

  • It is difficult to obtain exact solutions for FG anisotropic beams due to material inhomogeneity, tension-shear coupling and other effects. Many conventional shear functions fail to accurately predict the shear deformation behavior of FG beams.

    Analytical Solutions of FG Anisotropic Beams in Plane Elasticity · 2026 · DOI

  • The complexity of the problem requires a thorough analysis of the crack compliance and natural frequencies of cracked functionally graded beams. The need to validate the theoretical development by comparison of the numerical results computed hereby with those published earlier in the literature.

    Coupled effect of crack and temperature on free vibration of functionally graded beams · 2026 · DOI

  • The problem of cracked FGM structures has received increasing attention from engineers and researchers. There is a need to investigate the coupled effect of crack and temperature on free vibration of functionally graded beams.

    Coupled effect of crack and temperature on free vibration of functionally graded beams · 2026 · DOI

  • The paper suggests that future research should focus on the development of new beam theory models and numerical techniques for vibration analysis of composite materials. The use of natural fiber composite materials and their potential benefits should also be further explored.

    Dynamic and vibration analysis of beam, plates, and shells on composites materials – a literature review · 2026 · DOI

  • The paper identifies a gap in the existing research on vibration analysis of composite materials, highlighting the need for a comprehensive summary of the field. The review also identifies a need for further research on the use of natural fiber composite materials and their potential benefits.

    Dynamic and vibration analysis of beam, plates, and shells on composites materials – a literature review · 2026 · DOI

  • Existing finite elements have limitations in accurately modeling functionally graded material plates. There is a need for a novel strain-based rectangular plate finite element that can accurately analyze thin isotropic and functionally graded plates.

    A strain-based rectangular finite element for accurate static and free vibration analysis of thin isotropic and functionally graded plates · 2026 · DOI

  • The complexity of the dynamic behavior of cantilever beams with tip devices. The need for a comprehensive framework that can handle various types of tip devices and attachments. The challenge of computing certified bounds for all modes and selected modes.

    Certified Eigenfrequency Bounds for Euler–Bernoulli and Timoshenko Cantilever Beams with Tip Mass, Rotary Inertia, and a Rotational Spring · 2026 · DOI

  • The framework is limited to Euler-Bernoulli and Timoshenko cantilever beams. The certified upper bounds are mode-specific and require a small trial space. The framework assumes small transverse deflections and standard EB kinematics.

    Certified Eigenfrequency Bounds for Euler–Bernoulli and Timoshenko Cantilever Beams with Tip Mass, Rotary Inertia, and a Rotational Spring · 2026 · DOI

  • The study identifies a need for reliable and accurate modeling of complex engineering problems. The study aims to provide a hybrid algorithm for multi-output regression problems.

    Free Vibration Analysis of Centrally Elliptically Perforated Functionally Graded Plates and Modeling Using Enhanced Grey Wolf Algorithm-Multi-Task Regression Neural Networks · 2026 · DOI

  • The study is limited to the analysis of laminated hybrid composite beams with specific stacking sequences and geometric perforations. The study uses a computational program and finite element analyses, which may have limitations in terms of accuracy and applicability.

    Numerical Buckling Analysis of Laminated Hybrid Composites and Investigation of Perforated Structures · 2026 · DOI

  • Future research could investigate the influence of other parameters on the buckling behavior of laminated composite beams. Future research could also explore the application of the computational program and finite element analysis approach to other types of composite beams.

    Numerical Buckling Analysis of Laminated Hybrid Composites and Investigation of Perforated Structures · 2026 · DOI

  • The lack of models that account for hysteresis-type elastic-dissipative characteristics of materials. The need for a comprehensive analysis of the dynamic behavior of perforated plates.

    Modeling of a perforated plate with hysteresis type characteristics under kinematic excitations · 2026 · DOI

  • The study does not consider the effect of advanced shear correction on the thermal shock. The study is limited to a specific range of parameters, such as M∞ = 2, T1 = 100 K.

    Thermal-vibration of FGM plates-shells in nonlinear un-steady-supersonic air-flow · 2026 · DOI

  • The lack of consideration of advanced shear correction on the thermal shock. The limited understanding of thermal-vibration of FGM plates-shells in nonlinear un-steady-supersonic air-flow.

    Thermal-vibration of FGM plates-shells in nonlinear un-steady-supersonic air-flow · 2026 · DOI

  • The study of how to properly scale the ABH geometry at low frequencies. The investigation of the application of ABHs in full-scale marine structures. The exploration of the use of multiple ABHs to enhance performance at higher frequencies.

    Low-frequency structural vibration reduction in stiffened panels using integrated acoustic black holes · 2026 · DOI

  • There is a lack of research into the vibrations of rods of variable cross-section using effective numerical calculation methods. Traditional analytical methods have limited application for real objects with complex geometry and variable stiffness.

    Determination of dynamic characteristics of rods of shipbuilding structures · 2026 · DOI

  • The study identifies a gap in the existing literature on the thermo-mechanical behavior of FGM sandwich plates with TPMS cores. The analysis provides a novel approach to designing FGM sandwich plates for various applications.

    Design and Thermal Elastic Behavior of FGM Sandwich Plate with TPMS Core Layer · 2026 · DOI

  • the need for a novel strain-based finite element formulation for 2D structural analysis - the limitations of conventional displacement-based elements in dynamic elastoplastic analyses

    A NEW STRAIN-BASED TRIANGULAR ELEMENT FOR 2D STRUCTURAL ANALYSIS · 2026 · DOI

  • Existing finite elements may not provide accurate results for plate analysis, especially in the presence of mesh distortion. There is a need for a reliable and computationally efficient solution for plate analysis in practical engineering problems.

    DEVELOPMENT AND NUMERICAL EVALUATION OF A NEW STRAIN-BASED FOUR-NODE FINITE ELEMENT FOR KIRCHHOFF PLATE ANALYSIS · 2026 · DOI

  • Future studies could explore the effects of more complex plate configurations on the natural frequencies. Future studies could investigate the effects of shear stresses on the natural frequencies of thick plates. Future studies could develop more advanced design tools and guidelines for optimizing the vibrational characteristics of cantilevered square plates.

    Relationship Between Support Geometry and Natural Frequencies of Cantilevered Square Plate: Design Consideration · 2026 · DOI

  • There is a significant gap in existing research on designing cantilevered square plates based on their dynamic behavior. The study identifies a need for a comprehensive analysis of the impact of support geometry on the natural frequencies of attached square plates.

    Relationship Between Support Geometry and Natural Frequencies of Cantilevered Square Plate: Design Consideration · 2026 · DOI

Most-cited papers in Composite Structure Analysis and Optimization

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48 open questions have been extracted from the limitations and future-work passages of 747 Composite Structure Analysis and Optimization papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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