Article
Polymer Science
Junjie Chen, Xian Li, Changyao Chen, Chaofeng Yang, Xiangdong Gao
Summary: The influence mechanism of thermal oxygen aging on the dynamic characteristic of the rubber isolation pad (RIP) is crucial to the mechanical characteristic matching of the RIP. A novel model of thermal oxygen aging-dynamic characteristic of the RIP is established, and its performance is verified by experimental data. The model effectively characterizes the amplitude-dependent, frequency-dependent, and thermal oxygen aging-dependent performances of RIP.
INTERNATIONAL JOURNAL OF POLYMER SCIENCE
(2022)
Article
Physics, Multidisciplinary
Talaka Dya, Bale Baidi Blaise, Gambo Betchewe, Liman Kaoye Madahan Bien-aime, Tibi Beda, Mohamadou Alidou
Summary: This research work aims to characterize the behavior of rubber-like cylinder under pure torsion. By adjusting the experimental data using different models, the identification of material parameters is achieved. Among them, Bale et al. model performs best in predicting the experimental data.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Materials Science, Multidisciplinary
Filippo Masi, Ioannis Stefanou
Summary: Data-driven and deep learning approaches have the potential to replace classical constitutive models for complex materials. However, current approaches suffer from issues such as the dependence on incremental formulations and poor generalization. This study proposes a new approach called eTANN, which decouples material representation from incremental formulation and utilizes continuous-time evolution equations. The proposed approach demonstrates excellent results in various applications and offers the possibility to describe both macroscopic and micromechanical behavior of complex materials.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Engineering, Multidisciplinary
Ernesto Gonzalez-Saiz, Daniel Garcia-Gonzalez
Summary: Traditional methods for material modeling are often inaccurate for soft materials. In this study, a machine learning framework is proposed to automatically identify material parameters and the optimal kinematics and rheological model, which is applicable to any complex model. This work provides a new approach for studying the nonlinear responses of soft active materials.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Engineering, Mechanical
Francesca Fantoni, Andrea Bacigalupo
Summary: In this work, a variational-asymptotic homogenization technique is proposed to study non-conventional thermoviscoelastic periodic microstructured materials. The method overcomes the paradox of the usual Fourier's law and characterizes the thermodynamic properties of the materials with frequency-dependent overall constitutive tensors.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Polymer Science
Konstantin V. Pochivalov, Alexander N. Shilov, Tatyana N. Lebedeva, Anna N. Ilyasova, Roman Yu. Golovanov, Andrey V. Basko, Yaroslav V. Kudryavtsev
Summary: A detailed study of butyl rubber-based vibration damping formulations reveals high performance achieved through limited solubility of the plasticizer. Chalk is identified as the best inorganic filler for strong adhesion. A new environmentally friendly and cost-effective binding agent formulation is proposed as a replacement for materials containing aromatic compounds, offering comparable or superior properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Anthony M. Waas, Alan S. Wineman
Summary: This work investigates the uniaxial compression of a time-dependent material in a solid circular cylinder. The deformation history is analyzed to determine the time at which a new inhomogeneous branch can form. It is found that the characteristic relaxation times and deformation histories affect the branching time, compressive stretch, and compressive force.
MATHEMATICS AND MECHANICS OF SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
K. R. Rajagopal, A. Wineman
Summary: The note discusses the response of a viscoelastic body with stress relaxation modulus and creep compliance depending on body density, resulting in linear stress and strain in the constitutive equation. Such models are useful for studying porous viscoelastic bodies undergoing small deformations where moduli vary with porosity and density. The tension-torsion problem of cylinders with arbitrary cross-section is specifically examined within this constitutive relation.
MATHEMATICS AND MECHANICS OF SOLIDS
(2021)
Article
Chemistry, Physical
Cheng Long, Jonathan Selinger
Summary: Applied electric fields can induce motion of skyrmions in chiral nematic liquid crystals. A coarse-grained approach is developed to describe the dynamics of skyrmions. The results show that skyrmions move in a direction perpendicular to the induced tilt of the background director.
Article
Computer Science, Interdisciplinary Applications
Hamza Karim Serroukh, Mounir El Marzak, Mouhcine Benaicha, Wenlong Li, Jianguo Zhu, Adil Hafidi Alaoui, Yves Burtschell
Summary: This paper investigates the mechanical behavior of rubber concrete under fire loading and develops a new temperature-dependent constitutive model. The model takes into account the relationship between thermal parameters and temperature, and its accuracy is verified through experimental measurements.
ADVANCES IN ENGINEERING SOFTWARE
(2023)
Article
Engineering, Biomedical
Wenqiang Liu, Kevin M. Labus, Matt Ahern, Kristen LeBar, Reza Avazmohammadi, Christian M. Puttlitz, Zhijie Wang
Summary: This study characterized the biaxial viscoelastic behavior of the right ventricle free wall (RVFW) using two modeling approaches. The RVFW exhibited an anisotropic and strain-dependent viscoelastic behavior. The nonlinear viscoelastic (NLV) model showed higher capability in predicting strain-dependent stress relaxation than the quasi-linear viscoelastic (QLV) model.
ACTA BIOMATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Chencheng Gong, Yan Chen, Ting Li, Zhanli Liu, Zhuo Zhuang, Baohua Guo, Haiying Wang, Lanhong Dai
Summary: This paper develops a nonlinear viscoelastic constitutive model for polyurea, considering its complex nonlinear stress-strain response. The model takes into account nonlinear viscoelasticity, entropic and energetic elasticity, as well as the interaction of chain segments, stretch of molecular chains, and covalent bonds from the perspective of molecular structure.
MECHANICS OF MATERIALS
(2021)
Article
Engineering, Multidisciplinary
Ju Liu, Jiashen Guan
Summary: This study investigates the numerical schemes of finite deformation linear viscoelastodynamics, focusing on accuracy and reliability. The proposed algorithm preserves critical physical and mathematical structures, ensures energy stability, momentum conservation, and temporal accuracy. The directionality condition and integration of constitutive relations are considered for inelastic materials, leading to physically correct numerical dissipation. The update formulas for internal state variables based on the configurational free energy demonstrate energy-momentum consistency and achieve first- and second-order accuracy in time. Numerical examples support the effectiveness of the methodology.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Polymer Science
Aaron M. Duncan, Keizo Akutagawa, Julien L. Ramier, James J. C. Busfield
Summary: A new model is proposed to predict the behavior of rubber during chemical aging with fixed strains. The model is validated using carbon black-filled nitrile butadiene rubber aged in air at 125°C. This study addresses the limitations of the original model and demonstrates the improvements in the new model's ability to accurately model stress-strain behavior and estimate chain scission and cross-linking after aging.
Article
Mechanics
Ole Hassager, Yanwei Wang, Qian Huang
Summary: Polymeric liquid bridges are prone to failure during extension, but a steady extensional viscosity can still be measured under specific conditions. Additionally, reliable stress measurements can be obtained during a relaxation phase. Various constitutive equations were simulated to draw these conclusions.
Article
Materials Science, Multidisciplinary
Chen Shen, Abderrahim Talha, Adel Hamdi, Noureddine Benseddiq
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2020)
Article
Mechanics
Zeyu Liu, Mohsen Ardabilian, Abdelmalek Zine, Mohamed Ichchou
Summary: The study focuses on crack damage identification of thick composite sandwich structures using Gaussian Processes classification based on numerical simulations. Data-driven probabilistic interpretation of damage detection is the main goal. Features extracted by Discrete Wavelet Transform are used to train and test the GP model for assessing the health status of the structure.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Bo Yang, Christophe Droz, Abdelmalek Zine, Mohamed Ichchou
Summary: The article applies Mindlin's SSG theory and WFEM framework to analyze the dynamic behavior of one-dimensional bending beams and torsional bars, deriving strong and weak forms of continuum models for bending and torsion cases. LSMs are introduced as discrete micro-structural descriptions to compute wave dispersion characteristics in unit-cell structures, comparing results of SSG and CT in micro-sized structures.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Marine
Alexandre Kawano, Abdelmalek Zine, Celso Morooka, Mohamed Ichchou
Summary: This work aims to analyze a dynamical model for the transversal motion of a vertical riser and proposes a new numerical approach to solve the resulting system of coupled differential equations. The proposed model, in which transversal displacements are coupled with longitudinal ones, is analyzed mathematically with the existence and uniqueness of the resulting system of differential equations proved. The numerical model based on finite element method is successfully implemented in a Matlab code and compared with commercial computation code ORCAFLEX and experiments, showing very satisfactory results.
Article
Engineering, Chemical
Adel Hamdi, Abdelkader Boulenouar, Zaineb Baccouch
Summary: The study aims to investigate the fracture behavior of carbon-black filled natural rubber under quasi-static loadings using the finite elements method. Through experimentation on the hyperelastic potential of the virgin material and development of numerical models with pre-cracked specimens, the evolution and comparison of results based on energy concepts are examined.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Acoustics
Guang Zhu, Abdelmalek Zine, Pascal Fossat, Mohamed Ichchou
Summary: In this work, an enriched Timoshenko beam model is utilized to study the free wave propagation, frequency response, and sound radiation under non-classical bending and shear motion, considering the local behavior of internal heterogeneity. Dispersive behaviors, modal density, and energy flow are analyzed, revealing the significance of local behavior in non-classical structural behavior.
JOURNAL OF SOUND AND VIBRATION
(2021)
Article
Mechanics
Guang Zhu, Abdelmalek Zine, Christophe Droz, Mohamed Ichchou
Summary: This study employed models based on the second strain gradient theory and scattering matrix method to investigate wave transmission and reflection in complex media, as well as the impact of internal heterogeneity in coupling regions on wave scattering properties. The results indicate the potential of the proposed approach in studying vibration transmission control by enriching a waveguide's internal structure.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2021)
Article
Engineering, Mechanical
Bo Yang, Abdelmalek Zine, Christophe Droz, Mohamed Ichchou
Summary: This paper explores the wave propagation characteristics of micro-sized structures using higher order gradient elasticity theories, specifically the Second Strain Gradient (SSG) theory. The study derives the governing equations and boundary conditions of the continuum model and provides a valuable Lattice Spring Model (LSM) to explain the SSG-based model. The dynamic properties of a 2D beam grid are analyzed within the Wave Finite Element Method (WFEM) framework, and the results demonstrate the significant potential of this approach in investigating the wave propagation characteristics of complex micro-sized periodic structures.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Mathematics, Applied
S. Slimani, M. Farhloul, I. Medarhri, K. Najib, A. Zine
Summary: This paper introduces a mixed formulation for seawater intrusion phenomenon in confined aquifers. By writing the system into a matrix form and introducing a new variable sigma, the flux tensor of the primal variable u, the well-posedness of the continuous problem and its mixed finite element approximation are analyzed. Optimal error estimates in L-2-norm for both u and its associated flux sigma are also provided.
NUMERICAL ALGORITHMS
(2022)
Article
Physics, Multidisciplinary
Adel Tayeb, Makrem Arfaoui, Abdelmalek Zine, Mohamed Ichchou, Adel Hamdi, Jalel Ben Abdallah
Summary: This paper presents an implementation method for a viscohyperelastic model and validates its accuracy through various tests. The implemented model can be applied to engineering and biomechanical applications dealing with hyperviscoelastic models.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Chemistry, Multidisciplinary
Barbara Zaparoli Cunha, Abdel-Malek Zine, Mohamed Ichchou, Christophe Droz, Stephane Foulard
Summary: This paper investigates the modelling of surrogate models for sound transmission loss (STL) in the vibroacoustic domain using four machine learning approaches. Feature engineering and feature importance are utilized to improve accuracy and interpretability. Results show that neural network surrogates with physics-guided features outperform other ML models in different STL models.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Mechanical
Bo Yang, Mohamed Ichchou, Abdelmalek Zine, Christophe Droz
Summary: In this paper, a three-dimensional modeling of micro-sized structures is introduced using the second strain gradient theory. The constitutive relation is deduced and the weak formulations are calculated. The free wave propagation characteristics, dispersion relations, and forced responses of micro-sized structures are analyzed. The wave diffusion including reflection and transmission coefficients is illustrated through coupling conditions. The proposed approach shows significant potential for investigating the wave propagation and diffusion characteristics of micro-sized structures.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Mechanics
Xuefeng Li, Mohamed Ichchou, Pascal Fossat, Abdelmalek Zine, Noureddine Bouhaddi
Summary: This paper presents a novel method for characterizing wave propagation in complex composite structures using the Algebraic K-space Identification technique in the Cartesian coordinate system. The method has been experimentally applied to study the wave propagation phenomena in various complex composite structures and has been compared with other inverse methods to assess its reliability.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Mechanical
A. Hamdi, A. Boulenouar, N. Benseddiq
Summary: This study aims to establish a generalized rupture criterion for elastomers under plane stress loading, through a combination of experimental and theoretical approaches to find a new model for predicting the rupture of hyperelastic materials.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2021)
Proceedings Paper
Computer Science, Artificial Intelligence
Shiwei Li, Mohsen Ardabilian, Abdelmalek Zine
Summary: Skin diagnosis, particularly concerning conditions like melanoma and jaundice, has shifted towards non-invasive methods such as diffuse reflectance for detecting inner skin information. With the advancement of machine learning techniques, non-invasive methods like neural networks have shown improved accuracy and speed in analyzing skin pigments. The use of inverse mapping neural networks has significantly accelerated computational time.
VISAPP: PROCEEDINGS OF THE 16TH INTERNATIONAL JOINT CONFERENCE ON COMPUTER VISION, IMAGING AND COMPUTER GRAPHICS THEORY AND APPLICATIONS - VOL. 4: VISAPP
(2021)
Article
Engineering, Mechanical
Rosaria Del Toro, Maria Laura De Bellis, Marcello Vasta, Andrea Bacigalupo
Summary: This article presents a multifield asymptotic homogenization scheme for analyzing Bloch wave propagation in non-standard thermoelastic periodic materials. The proposed method derives microscale field equations, solves recursive differential problems within the unit cell, establishes a down-scaling relation, and obtains average field equations. The effectiveness of this approach is validated by comparing dispersion curves with those from the Floquet-Bloch theory.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Yue Bao, Zhengcheng Yao, Yue Zhang, Xueman Hu, Xiandong Liu, Yingchun Shan, Tian He
Summary: This paper proposes a novel triple-gradient phononic acoustic black hole (ABH) beam that strategically manipulates multiple gradients to enhance its performance. The study reveals that the ABH effect is not solely brought about by the thickness gradient, but also extends to the power-law gradients in density and modulus. The synergistic development of three different gradient effects leads to more pronounced and broader bandgaps in PCs.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Matthias Ryser, Jason Steffen, Bekim Berisha, Markus Bambach
Summary: This study investigates the feasibility of replacing complex experiments with multiple simpler ones to determine the anisotropic yielding behavior of sheet metal. The results show that parameter identifiability and accuracy can be achieved by combining multiple specimen geometries and orientations, enhancing the understanding of the yield behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Wenjun Li, Pengfei Zhang, Siyong Yang, Shenling Cai, Kai Feng
Summary: This study presents a novel two-dimensional non-contact platform based on Near-field Acoustic Levitation (NFAL), which can realize both one-dimensional and two-dimensional transportation. Numerical and experimental results prove the feasibility and ease of this method.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Shuo Liu, Lu Che, Guodong Fang, Jun Liang
Summary: This study presents a novel lamina conjugated bond-based peridynamic (BB-PD) model that overcomes the limitations of material properties and is applicable to composite laminates with different stacking sequences. The accuracy and applicability of the model are validated through simulations of elastic deformation and progressive damage behavior, providing an explanation of the damage modes and failure mechanisms of laminated composite materials subjected to uniaxial loading.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Omar El-Khatib, S. Kumar, Wesley J. Cantwell, Andreas Schiffer
Summary: Sandwich-structured honeycombs (SSHCs) are hierarchical structures with enhanced mass-specific properties. A model capable of predicting the elastic properties of hexagonal SSHCs is presented, showing superior in-plane elastic and shear moduli compared to traditional honeycombs, while the out-of-plane shear moduli are reduced.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Zhi-Jian Li, Hong-Liang Dai, Yuan Yao, Jing-Ling Liu
Summary: This paper proposes a process-performance prediction model for estimating the yield strength and ultimate tensile strength of metallic parts fabricated by powder bed fusion additive manufacturing. The effect of main process variables on the mechanical performance of printed metallic parts is analyzed and the results can serve as a guideline for improvement. The accuracy of the proposed model is validated by comparison with literature.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Saman A. Bapir, Kawa M. A. Manmi, Rostam K. Saeed, Abdolrahman Dadvand
Summary: This study numerically investigates the behavior of an ultrasonically driven gas bubble between two parallel rigid circular walls with a cylindrical micro-indentation in one wall. The primary objective is to determine the conditions that facilitate the removal of particulate contamination from the indentation using the bubble jet. The study found that the bubble jet can effectively remove contamination from the indentation for certain ranges of indentation diameter, but becomes less effective for larger indentation diameters.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
E. Polyzos, E. Vereroudakis, S. Malefaki, D. Vlassopoulos, D. Van Hemelrijck, L. Pyl
Summary: This research investigates the elastic and damage characteristics of individual composite beads used in 3D printed composites. A new analytical probabilistic progressive damage model (PPDM) is introduced to capture the elastic and damage attributes of these beads. Experimental results show strong agreement with the model in terms of elastic behavior and ultimate strength and strain.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
