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On propagation analysis of flexural waves in functionally graded poroelastic biocomposite higher-order beams
(Springer Science and Business Media LLC, 2025-05-29)
Hu Yuanchao
;
Wu Yijiang
;
HABIBI, MOSTAFA
;
Dong Zhicong
;
Li Bei
The present work uses higher-order shear deformation theory to investigate the propagation behavior of a functionally graded poroelastic biocomposite (FGPB) beam placed on an elastic medium. Titanium-hydroxyapatite and gold-hydroxyapatite alloy were used as ingredients for two biocomposites. It is assumed that the structure is supported by an elastic medium. An improved power-law homogenization scheme that calculates porosity is used to compute the effective material characteristics of the FGPB beam. The result showed that the wave number, porosity coefficients, and Winkler–Pasternak parameters have an increasing role in the wave frequency and phase speed of both biocomposites. The power index also presented different behaviors in two biocomposites. Emphasizing the theoretical analysis, the current study shows how the change in the distribution patterns of the elastic medium and the amount of porosity can affect the performance and efficiency of biocomposites. These findings can be effective in designing and optimizing biocomposite materials with desirable mechanical properties and various applications in bioengineering and composite materials.
Scopus© Citations 5
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Towards a circular economy: Harnessing bacteria for sustainable plastic waste degradation
(Elsevier BV, 2025-10-07)
Wenjuan Liu
;
Jie Wang
;
HABIBI, MOSTAFA
The increasing prevalence of plastic pollution poses a significant environmental challenge, necessitating innovative and sustainable approaches to waste management. In this research the biodegradation potential of two prominent bacterial genera, Pseudomonas and Bacillus. These have demonstrated remarkable capabilities in degrading various plastic polymers, including LDPE, HDPE, PP, PET, and PLA. Both genera exhibit a broad substrate range and employ diverse enzymatic mechanisms, such as lipases, hydrolases, and laccases, to facilitate plastic breakdown. While strain specificity is crucial in degradation efficiency, studies indicate synergistic interactions in mixed-culture consortia can enhance overall degradation rates. Despite the promising advancements in bacterial plastic degradation, challenges remain, including variability in degradation rates and the need for standardized testing protocols. Future research should focus on identifying high-performing strains, characterizing their enzymatic profiles, and optimizing environmental conditions to improve biodegradation outcomes. By harnessing the natural capabilities of bacteria, this work highlights the potential for developing effective bioremediation strategies that contribute to a circular economy and address the pressing issue of plastic waste.
Scopus© Citations 5
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Delamination, frequency, and bending analysis of GPLRC curved panel with initial crack via machine learning and three-dimensional layerwise theory
(Elsevier BV, 2025-12)
Xinrong Cao
;
Xiaohong Yang
;
Linyuan Fan
;
HABIBI, MOSTAFA
;
Ibrahim Albaijan
In the present study, the thermal stability of graphene-reinforced composite laminates (GPL-RC) with diverse functional gradients and width delamination layers is examined. In this regard, various models of laminated GPL-RC are considered with different geometrical and material parameters. Utilizing the physics-informed neural networks (PINN), we calculate the energy release rate (ERR) at the cleavage boundary, aiming to gauge cleavage growth potential. This study also delves effects of various graphene reinforcement distributions and delamination configurations on the vibrational attributes of delaminated GPL-RC sheets, with an emphasis on pre/post heat bending modalities. Solutions are grounded in the third-order shear strain theory (TSDT), integrating von Karman geometric nonlinearity. Using the principle of minimal potential energy, the nonlinear equilibrium equations are tackled using PINN. Theoretical insights obtained are verified via a comparison to other published studies. Notably, parametric experiments indicate that the ERR in the FGX configuration in which most reinforcement material located adjacent to the upper and lower surfaces of the plate, is double that of the FGA, in which most reinforcement material adjacent to the lower surface of the plate. Moreover, while the FGX sheet's fundamental frequency surpasses other graphene configurations at the primary temperature, its natural frequency in the post-buckling modality is notably the least compared to the entire sample set.
Scopus© Citations 7
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Exercise-induced changes in protein tissue stability in athletes via biomechanical analysis using size-dependent mechanical models
(2025-05-25)
Chaofan Chen
;
Xiangzi Xiao
;
HABIBI, MOSTAFA
;
Brahmia, Ameni
Protein stability has been recognized as a critical factor influencing athletic performance, recovery, and injury prevention during physical exercise. Despite widespread recognition, the mechanisms by which exercise influences the stability of protein tissues and fibers remain incompletely understood. This study uses complex mechanical theories and numerical simulations to investigate how exercise impacts protein stability. Size-dependent mechanical models are employed to analyze the small-scale behavior of protein tissues under exercise-induced stress, including strain rate, tissue microstructure, and exercise intensity. Numerical approaches are used to simulate proteins’ dynamic behavior, offering insights into their deformation and failure processes under a wide range of situations. The results demonstrate that exercise substantially influences protein stability, with significant variations depending on the kind and intensity of the physical activity. These findings provide novel insights into the importance of protein stability in athletic performance and recovery, highlighting practical implications for training optimization, injury prevention, and broader applications in sports science. This study emphasizes the importance of protein stability for exercise and athletic performance by integrating biomechanics and sports science.
Scopus© Citations 10
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Mechanical Performance of Auxetic Rotational Polygons Metamaterials Based on Simple Rectangular-Shaped Parts: Experimental Validation and FEA Modeling
(World Scientific Pub Co Pte Ltd, 2025-07-19)
Yuanchao Hu
;
Wenlong Zhao
;
Yunzhu An
;
Minchuan Liao
;
HABIBI, MOSTAFA
This paper presents the design, fabrication, and mechanical characterization of rotational polygons auxetic metamaterial with a negative Poisson’s ratio. The remarkable auxetic behavior demonstrated by the metamaterial was achieved through its cell structure, which consists of four rectangular-shaped parts that rotate around a fixed point. The metamaterial’s mechanical performance was evaluated through experimental testing and finite element analysis (FEA) simulations. Simulations were performed using Abaqus computer-aided engineering (CAE), showing a good correlation with experimental results, with slight variations in force values during different stages of deformation. Stress distribution analysis showed that the maximum stress occurred at the junctions where the diamond-shaped units of the structure met, with a higher stress concentration observed in the lower half of the structure. Elastic strain distribution followed a similar pattern, with greater strain observed in the lower half, particularly in the central diamond-shaped gaps. Additionally, simulations of compression along the [Formula: see text]-direction revealed a more pronounced auxetic effect than [Formula: see text]-direction compression, where compression in the [Formula: see text]-direction caused contraction in the [Formula: see text]-direction. The force–displacement curve for [Formula: see text]-direction compression showed a higher peak force compared to [Formula: see text]-direction compression, with the force reaching a maximum of 3.26[Formula: see text]kN. The study also demonstrated that the stress and strain distribution during [Formula: see text]-direction compression closely resembled that observed at the end of the deformation in [Formula: see text]-direction compression. Furthermore, results reveal that the structure absorbs nearly four times more energy along the [Formula: see text] direction than the [Formula: see text] direction, attributed to its enhanced auxetic behavior in the [Formula: see text] direction. In terms of energy absorption, it was observed that a smaller gap size resulted in a higher capacity for energy absorption. The study underscores the enhanced energy absorption and auxetic response of the developed metamaterial, making it well-suited for use in energy dissipation and impact-resistant applications such as footwear.
Scopus© Citations 21
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Research on applicable sensor for solving the volleyball sport problem using smart nanomaterial based on dynamic simulation
(2025-05-25)
Li Xu
;
Chen Zhang
;
HABIBI, MOSTAFA
;
Albaijan, Ibrahim
;
Chuangao Yin
This research investigates the application of machine learning methodologies to optimize energy management within the context of a volleyball game, specifically focusing on the energy dynamics of the ball. Machine learning, as a discipline, provides a robust framework for the development of automated analytical models, enabling the extraction of meaningful insights from complex datasets. The ball in the volleyball games is the most important tool. The surface properties and response to hit by hand are crucial in determining the accuracy and fluency of the game. The outer material of the ball is extremely determinative in the mechanical response of the ball to the impact loading which commonly causes vibration in the ball. Therefore, in the current work vibrations of a volleyball game ball is presented. The volleyball game ball is reinforced by graphene oxide powders to improve its stability in different situation. Finally, the results show that the ball’s radius has a key role in the dynamic stability of the volleyball game ball. One of the important outcomes of the current research is that, unlike the ball’s size, heavier balls tend to be more stable when they hit the ground. The outputs of the current work can be used for future analysis of the volleyball game ball for improving its stability.
Scopus© Citations 9
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Advancing sports equipment performance: Leveraging rotating small-scale structures for enhanced athletic tools
(2025-05-25)
Yuan Wan
;
Guizhi Zhang
;
Zimin Chang
;
HABIBI, MOSTAFA
;
Albaijan, Ibrahim
The use of sophisticated materials and nanoscale structures in the design of sports equipment is recognized as a key strategy for boosting athletic performance. The study of spinning small-scale structures, such as nanobeams and nanotubes, is centered on their potential use in the creation of next-generation sporting equipment. The distinct characteristics of these constructions, such as improved stiffness, vibration damping, and longevity, play an important role in improving the efficiency, control, and responsiveness of various athletic equipment. Nanomaterials are used in tennis rackets, golf clubs, and hockey sticks to efficiently eliminate undesired vibrations while increasing energy transfer upon impact, boosting player comfort and performance. These structures’ rotational dynamics closely resemble real-world circumstances encountered by sports equipment, such as the swinging motion of a bat and the bending of a ski. The nonlocal strain gradient theory provides useful insights for improving material behavior in dynamic loading situations, notably in terms of size effects at the nanoscale. Case studies and practical examples demonstrate how these innovations support athletes in improving their power, accuracy, and the longevity of their equipment. A connection exists between nanotechnology and sports engineering, facilitating the development of lighter, stronger, and more efficient technologies that enhance athletic performance capabilities. The significance of diverse methods for enhancing sports technology is emphasized, providing advantages for both elite athletes and recreational users.
Scopus© Citations 3
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Dynamic stability and vibration responses of a volleyball game ball
(2025-04-25)
Zhao Daichang
;
Li Aiyun
;
HABIBI, MOSTAFA
;
Zhiqiang, Song
;
Albaijan, Ibrahim
This study investigates the vibrational response of a graphene oxide-reinforced volleyball under impact loading, aiming to enhance its dynamic stability. Employing Hamilton’s principle and spherical shell coordinates, we derive the governing equations for the ball’s motion under internal loading. These equations are solved using the generalized differential quadrature (GDQ) method and analytical techniques to analyze the vibrational modes. The results demonstrate a significant correlation between the ball’s radius and its dynamic stability, with variations in radius substantially affecting vibrational characteristics. Notably, we find that increased ball mass, independent of size, contributes to enhanced stability upon ground impact. This observation suggests that heavier balls exhibit improved resistance to deformation and vibration, leading to more predictable trajectories. The findings provide a quantitative basis for optimizing volleyball design by elucidating the interplay between material reinforcement, geometry, and impact dynamics, thereby facilitating the development of volleyballs with improved stability and performance.
Scopus© Citations 10
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Computational stability analysis of sport structures: Importance of MEMS for testing athlete performance
(2025-01-10)
Liang Xia
;
HABIBI, MOSTAFA
;
Qinyang Li
The cultivation of cocoa (Theobroma cacao L.) is one of the most important crops in Ecuador. However, the presence of heavy metals in the soil is of concern, with cadmium (Cd) being one of the most worrisome contaminants, and its presence in the kernel has become a limiting factor for export. This work aimed to determine the capacity of arboreal plants to extract Cd. Therefore, nine species were evaluated in sandy-frank soil with 2.4 % MO and a pH of 6.2, contaminated with 3 mg/kg of Cd. The variables evaluated were dry matter, soil and rhizosphere pH, Cd concentration and content, and translocation factor. The weed species that showed high adaptability and absorbed significant amounts of Cd were Pseudelephantopus spiralis, Oplismenus burmannii, Geophila macropoda, and Ipomoea grandifolia. In contrast, Commelina difusa, Pseudelephantopus spiralis, Cissus verticillata, Epipomoea verticillata, and Epipremnum aureum functioned as metal stabilizers, indicating that they can be considered as hyperaccumulators of Cd, facilitating its safe removal from the soil.
Scopus© Citations 23
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Electroelastic analysis of piezoelectric double curved-shells for spring board practice and gymnastic training via Levy-Type Method
(2025-04-25)
HABIBI, MOSTAFA
;
Di Zhu
;
Andong Zhang
;
Mohammad Arefi
In this work, a general electroelastic solution method is developed for size-dependent electric potential, deformation, strain and stress analysis of a piezoelectric double curved nanoshell using a shear deformable model and nonlocal elasticity theory for a Levy-type boundary condition through Eigenvalue- Eigenvector approach. The partial differential equations derived using principle of virtual work are reduced to ordinary differential equations after applying the Levy-type boundary condition. The general solution is derived using Eigenvalue-Eigenvector approach with applying the clamped-clamped boundary conditions. Accuracy of the proposed solution is justified through comparison with results of previous papers. The electroelastic deformation, strain and stress are presented in terms of scale parameter and initial voltage. The main novelty of the present paper is application of a more general solution method for investigating effect of various boundary conditions on the electro-elastic responses of the shell. Furthermore, an investigation on the effect of scale parameter associated with the Eringen nonlocal elasticity theory is studied on the deformation, strain and stress results.
Scopus© Citations 5

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