Article
Engineering, Manufacturing
Vincent Werlen, Christian Rytka, Veronique Michaud
Summary: This study demonstrates that a three-branches Maxwell model can accurately describe the viscoelastic compaction behavior of fiber beds at different strains and strain speeds, both in dry and wet conditions. Strain deviations have a considerable impact on the viscoelastic parameter extraction and should be taken into account.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Materials Science, Ceramics
Farid Asadi, Damien Andre, Sacha Emam, Pascal Doumalin, Marc Huger
Summary: In the steelmaking industry, the refractory ceramics used in ladles are found to have improved thermal shock resistance when pre-existing microcracks are present. The Discrete Element Method (DEM) is a suitable numerical approach for modeling the quasi-brittle behavior of these ceramics with microcracks. By introducing initial well-distributed damages following a Weibull distribution, the study aims to investigate the effect of microcracks on the quasi-brittle behavior of a numerical sample under uniaxial and cyclic tensile tests. Ultimately, a quantitative DEM model for simulating such a complex behavior is proposed.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Computer Science, Interdisciplinary Applications
Amedeo Gregori, Chiara Castoro, Micaela Mercuri, Michele Angiolilli
Summary: Finite element models were analyzed to investigate the effects of rubber particle replacement on concrete compressive strength and elastic modulus, with proposed analytical relationships and sensitivity analysis showing that rubbercrete properties do not solely depend on the elastic modulus of rubber.
COMPUTERS & STRUCTURES
(2021)
Article
Engineering, Manufacturing
Xiguang Gao, Xu Zhang, Sheng Zhang, Chenyang Liu, Yuchun Feng, Yingdong Song, Fang Wang
Summary: The mesoscopic model of fibre-reinforced composites provides important geometric and material information for predicting the mechanical properties of composite components. A method to build a mesoscale preform of a plain-weave composite component with complex geometry using parameterisation and integration was established in this study. The credibility of this method was verified through similar microscopic observations and experiments in other studies, and its applicability to more complex components was also investigated.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Composites
Daniel T. Karadi, Andras A. Sipos, Marianna Halasz, Viktor Hliva, Dezso Hegyi
Summary: The article introduces an improved phenomenological model in technical textile engineering that effectively describes the material's highly nonlinear behavior, including nonlinear shear behavior. Material parameters are determined using a data fitting method for exponential functions. The nonlinear shear behavior is valid for the elastic state and does not consider time-dependent, cyclic loading, or plastic behavior.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2021)
Article
Engineering, Geological
Cheng Chen, Yong Wang, Xianwei Zhang, Lingwei Kong, Guofang Xu
Summary: A numerical model for the mechanical behaviour of gassy sand is presented in this paper, combining the theory of two-phase saturated porous media and an advanced constitutive model for sand to capture the complex stress-strain behaviour. The model is validated by comparing simulated results with laboratory test data.
Article
Engineering, Geological
Jiri Svoboda, David Masin, Jan Najser, Radek Vasicek, Irena Hanusova, Lucie Hausmannova
Summary: This paper mainly introduces the use of clay materials such as bentonites as a buffer and backfill for high-level radioactive waste disposal. The design is based on mathematical models that are validated using laboratory data. The laboratory research aims to determine the hydromechanical properties and stress path behavior of BCV bentonite. The results show that the behavior is influenced by stress path and water introduction method, and that micro- and macrostructures have a significant impact on material properties and mathematical models. A hypoplastic model is implemented and validated to predict the behavior of bentonite in nuclear waste repositories.
Article
Construction & Building Technology
Yatong Nie, Amir Karimi-Nobandegani, Hamid R. Valipour
Summary: This study conducted push-out tests on symmetric timber-timber composite joints with coach screw shear connectors and developed a nonlinear finite element model to accurately predict the load-slip response. The results demonstrated the significant influence of the screw shear connectors on the ultimate load carrying capacity of the TTC joints.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Multidisciplinary
Aniello Riccio, Andrea Sellitto, Antonio Garofano, Giancarlo Ingenito, Mauro Zarrelli
Summary: This study aims to investigate the mechanical behavior of a repaired aeronautical composite stiffened panel subjected to compressive loading conditions through numerical and experimental methods. Finite element models were introduced in the ABAQUS FEM environment to simulate the mechanical behavior of the repaired panel. Experimental testing was also performed on the repaired panel to validate the numerical models. The validated numerical model was then used to analyze the compressive behavior of repaired stiffened panels with different patch stacking sequences and sizes to assess their influence on the panel's mechanical behavior.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Manufacturing
James L. Thomason, Jose L. Rudeiros-Fernandez
Summary: The study investigated the internal structure, CSA, and mechanical properties of palm and coir fibers using SEM, tensile measurements, and optical microscopy. Palm fiber results showed good correlation between experimental observations and theoretical predictions, while the modulus dependence of coir fibers on CSA was less well defined due to higher property variability.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Materials Science, Textiles
Youssef Cherradi, Hocine Kebir, Aicha Boukhriss, Habiba Ennamiri, Mustafa Benyoucef
Summary: Three-dimensionally knitted technology textiles have great potential in industrial and technical applications. However, there are challenges in developing computational tools to predict the mechanical behavior of these textiles while keeping the computing cost low. A yarn-level simulation model was created to understand the specific mechanical behaviors of knitted textiles, and the effects of various parameters were investigated.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Engineering, Biomedical
Angela Perez-Benito, Carla Huerta-Lopez, Jorge Alegre-Cebollada, Jose Manuel Garcia-Aznar, Silvia Hervas-Raluy
Summary: Protein-based hydrogels are extensively studied in biomaterials research due to their ability to mimic living tissues and the extracellular matrix. However, methods for controlling their mechanical properties are limited, mainly focusing on elasticity and often with unrealistic characterization. This study develops a computational model to characterize the mechanical behavior of two protein-based hydrogels and compares it with experimental results. The model utilizes the Finite Element Method, combining hyperelastic and viscoelastic models, and the first order Ogden model with a viscoelastic model defined in Prony parameters performs the best in reproducing the observed strain-stress response and stiffness change.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Mechanics
Ben Wang, Bailu Luo, Wei Hu, Wenyi Bao, Hualin Fan
Summary: C-sandwich radome composites with double-layer woven lattice truss composites were designed and manufactured. Edgewise compressive testing revealed that the failure mechanism depends on the panel height, with global buckling, core piles fracture, and skin fracture being the typical failure modes. The global buckling is induced by the shear failure of the truss core, which is restricted with shorter columns. This study provides guidance for the design and preparation of radome sandwich composites.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Civil
Duc Tho Pham, Trong Dung Nguyen, Minh Ngoc Vu, Avirut Chinkulkijniwat
Summary: This article presents a lattice-type numerical modelling method for analysing the thermo-mechanical behaviour of concrete subjected to compressive stresses at high temperature. It highlights the damage and crack initiation caused by thermal expansion differences between material phases, and their impact on heat transfer.
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2021)
Article
Engineering, Geological
Shun Wang, Wei Wu, Deshan Cui
Summary: The mechanical behavior of clastic soil was described by numerical simulations considering both the soil matrix and breccia. The simulations indicated that breccia content, gradation, and overconsolidation ratio significantly influenced the strength, deformation, and failure pattern of clastic soil.
Article
Materials Science, Multidisciplinary
Gabriele Barbagallo, Marco Valerio D'Agostino, Alexios Aivaliotis, Ali Daouadji, Ahmed Makradi, Gaetano Giunta, Philippe Boisse, Salim Belouettar, Angela Madeo
Summary: This paper investigates phenomena associated with microstructure and how the main deformation mode can be controlled through a second gradient parameter. The results demonstrate that by increasing the second gradient parameter, the deformation mode can switch from shear to one with a constant curvature along the specimen. By studying two different geometries of fibrous composite reinforcements, it is shown how the effects of local bending stiffness of the yarns can be taken into account in a homogenized way in a homogeneous second gradient continuum.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2021)
Article
Engineering, Manufacturing
Marina Selezneva, Naim Naouar, Yvan Denis, Larissa Gorbatikh, Peter Hine, Stepan V. Lomov, Yentl Swolfs, Ignaas Verpoest, Philippe Boisse
Summary: The study focuses on developing an FE model for thermoforming of SRPP, based on the Boisse - Charmetant hyperelastic law. The model is validated against experimental draping data, showing good qualitative correlation. It can be used for predicting SRPP draping and analyzing the mechanical response of the consolidated part to loading.
INTERNATIONAL JOURNAL OF MATERIAL FORMING
(2021)
Article
Materials Science, Multidisciplinary
N. Naouar, D. Vasiukov, C. H. Park, S. V. Lomov, P. Boisse
JOURNAL OF MATERIALS SCIENCE
(2020)
Article
Engineering, Manufacturing
Renzi Bai, Julien Colmars, Naim Naouar, Philippe Boisse
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2020)
Article
Mechanics
Quentin Steer, Julien Colmars, Naim Naouar, Philippe Boisse
Summary: A new stiffness of in-plane bending of fibers is introduced in this article to simulate the appearance of transition zones in the deformation of fibrous reinforcements. Second gradient approaches and rotation-free shell elements are used to model these phenomena in continuous medium and 3D finite element.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2021)
Article
Chemistry, Multidisciplinary
Raphael Richert, Jean-Christophe Farges, Cyril Villat, Sebastien Valette, Philippe Boisse, Maxime Ducret
Summary: A digital tool was presented to help clinicians decide between non-surgical and surgical strategies in cases of instrument fracture. Virtual Treatment Planning and Finite Element Analysis identified mechanical risks of different strategies, ultimately leading to the choice of a 3-mm apicoectomy approach. Further research is needed to confirm the relevance of this digital approach in endodontic practice.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Composites
B. Chen, P. Boisse, J. Colmars, N. Naouar, R. Bai, P. Chaudet
Summary: This study proposes a continuous approach based on hypoelastic behavior for simulating the forming process of interlock textile composites, which can accurately trace specific material behavior.
APPLIED COMPOSITE MATERIALS
(2022)
Article
Engineering, Manufacturing
Bo Chen, Julien Colmars, Naim Naouar, Philippe Boisse
Summary: A stress resultant shell approach is proposed to simulate the draping of textile composite reinforcements, considering independent bending and tension stiffness to account for the specificity of fibrous reinforcements. The method relates stress resultants and stress moments to membrane strains and curvatures through rate constitutive equations. Experimental tests are conducted to identify material properties for the constitutive laws, and the approach is implemented in the ABAQUS finite element code for user convenience. Forming tests demonstrate the effectiveness of the approach through comparisons of simulation and experimental results.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Mechanics
R. Bai, J. Colmars, B. Chen, N. Naouar, P. Boisse
Summary: This paper demonstrates that a fibrous shell approach based on quasi-inextensibility of the fibers can accurately model the deformation during forming of composite reinforcements. The rotation of the material normal is simulated in good agreement with forming experiments, which is not the case for alternative approaches.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Renzi Bai, Bo Chen, Julien Colmars, Philippe Boisse
Summary: The drapability of a textile composite reinforcement refers to its ability to be formed on a double curved shape without wrinkling. By analyzing the deformation modes and internal virtual works during draping, a physics-based Drapability Ratio can be determined, which is influenced by the in-plane shear stiffness and bending stiffness of the textile reinforcement. This ratio helps identify the suitable reinforcement for a given geometry.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Health Care Sciences & Services
Raphael Richert, Jean-Christophe Farges, Jean-Christophe Maurin, Jerome Molimard, Philippe Boisse, Maxime Ducret
Summary: This study aimed to classify the relative contributions of four biomechanical factors to the root stresses of the resected premolar. The results showed that the factors of preparation and bone height had a significant influence on root stresses, and neglecting the interactions between factors would result in missing nearly half of the biomechanical impact.
JOURNAL OF PERSONALIZED MEDICINE
(2022)
Article
Engineering, Mechanical
B. Chen, J. Colmars, R. Bai, N. Naouar, P. Boisse
Summary: Four-point bending tests were conducted on multilayer fibrous materials to study the limitations of classical shell elements for textile reinforcements. A kinematic modeling approach was proposed based on the quasi-inextensibility of fibers to efficiently calculate the transverse shear strain. Experimental and numerical results from bending tests and forming experiments validated the effectiveness and correctness of the approach.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Chemistry, Physical
Mohammed Zaidi, Dominique Baillis, Naim Naouar, Michael Depriester, Francois Delattre
Summary: This study investigates the thermal and microstructural properties of new biocomposite insulating materials derived from flaxseed-gum-filled epoxy, providing valuable insight into their thermal behavior and microstructure.
Article
Materials Science, Composites
Philippe Boisse, Jin Huang, Eduardo Guzman-Maldonado
Summary: This article presents different approaches for simulating wrinkling during the forming of textile reinforcements, including 3D finite element modeling with consideration of additional bending stiffness of fibers and the importance of bending stiffness in shell-type modeling. It also discusses the common aspects of quasi-inextensibility of fibers and possible slippage between fibers in the development of wrinkles. Additionally, it explores the influence of fiber orientation on wrinkling during the simultaneous forming of multilayered textile reinforcements.
JOURNAL OF COMPOSITES SCIENCE
(2021)
