Article
Mechanics
P. N. B. Reis, P. Sousa, L. M. Ferreira, C. A. C. P. Coelho
Summary: Nowadays, composite materials are widely used in engineering applications, but there is still a lack of understanding about their mechanical performance. Experimental tests were conducted to study the impact of thickness on the compression and multi-impact response of laminated E-glass/Polyester shells. The results showed that higher thicknesses led to higher compressive strength and stiffness in static response, with a difference of 252.6% between the thinnest and thickest shells. In terms of multi-impact response, the impact fatigue life increased 17.4 times within the analyzed thickness range due to different damage mechanisms.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Gerasimos Sotiropoulos, Vissarion Papadopoulos
Summary: In this work, a formulation and modeling scheme for the non-linear multi-scale analysis of thin shells is presented. This method is capable of dealing with large deformations and heterogeneous micro-structures composed of non-linear materials and cohesive interfaces. By utilizing an attached coordinate system, the projection of strain measures allows for the elimination of large rotations, simplifying the boundary value problem at the micro-structural level. The resulting methodology has been tested against popular benchmarks and successfully integrated in existing FE2 codes, providing countless simulation possibilities and wide applicability in engineering fields.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)
Article
Mechanics
Payam Poorsolhjouy, Marcial Gonzalez
Summary: This study presents constitutive laws of structural members using granular micromechanics approach, deriving macroscopic behavior by investigating average behavior of grain-pair interactions. Closed-form solutions for constitutive relationship of uniform and functionally graded materials are derived, demonstrating versatility and computational efficiency of the proposed approach. Analyzing structural members made of particle-binder composites reveals interesting one-way and two-way coupling behavior between internal forces and moments that cannot be achieved through closed-form solutions.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Civil
R. S. Priyadarsini, V. Kalyanaraman, S. M. Srinivasan
Summary: The integration of smart materials with thin walled structures can achieve desired mechanical properties without significant mass change. Experimental and numerical studies on the use of piezo ceramic (PZT) patches on thin composite cylindrical shells show improved strength and buckling resistance. The actuation of PZT can enhance stiffness, reduce local imperfections, and improve overall shell capacity.
THIN-WALLED STRUCTURES
(2021)
Article
Mathematics
Madina E. Isametova, Rollan Nussipali, Nikita Martyushev, Boris Malozyomov, Egor A. Efremenkov, Aysen Isametov
Summary: This article discusses the importance of assessing and predicting the performance properties and reliability of composite materials. It proposes a methodology for predicting reliability and presents a statistical model based on the structural strength of polymer composite materials. The article also provides computational experimental results to evaluate the influence of inclusion shape and mass on the mechanical properties of the materials.
Article
Mechanics
Mehmet Dorduncu, Ibrahim Olmus, Timon Rabczuk
Summary: This study investigated crack initiation and progression in two-dimensional functionally graded plates under dynamic and quasi-static loading conditions using an ordinary state-based PeriDynamic theory. The research found that tailoring the effective material properties in the FG plates in two directions using a rule of mixture can increase plate strength and fracture resistance.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Mechanical
Peyman Shabani, Nazanin Shabani
Summary: A reliable predictive method based on progressive fatigue damage modeling technique is developed to estimate the fatigue life of high-speed composite craft. This method updates material properties by inspecting different failure types at each loading cycle, enabling the prediction of fatigue life under arbitrary loading conditions for composite structures with different layup configurations. The energy-based unified fatigue life model is employed to reduce the number of required tests, making it cost-effective in the design stage of composite structures intended to endure cyclic loads.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Materials Science, Composites
Franz Hirsch, Erik Natkowski, Markus Kaestner
Summary: This study explores the application of hybrid composites in lightweight engineering, focusing on the connection of an aluminum component and a glass fiber-reinforced epoxy at the microscale. Numerical investigations were conducted to examine the influence of local interface strength and geometry on macroscopic properties.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Alexandra M. Pak, Elena A. Maiorova, Elizaveta D. Siaglova, Teimur M. Aliev, Elena N. Strukova, Aleksey V. Kireynov, Alexey A. Piryazev, Valentin V. Novikov
Summary: In this study, a biocompatible metal-organic framework MIL-100(Fe) was used to produce composite films based on ?-carrageenan and hydroxypropyl methylcellulose loaded with the active compounds of tea tree essential oil, and ensured the uniform distribution of the filler particles. The composite films showed excellent UV-blocking properties, good water vapor permeability, and moderate antibacterial activity against both Gram-negative and Gram-positive bacteria. The use of metal-organic frameworks as containers of hydrophobic molecules of natural active compounds makes the composites made from naturally occurring hydrocolloids attractive materials for active packaging of food products.
Review
Engineering, Multidisciplinary
M. Nebe, A. Soriano, C. Braun, P. Middendorf, F. Walther
Summary: The commercial development of gaseous hydrogen storage in fuel cell electric vehicles relies heavily on the reliable and cost-effective design of composite pressure vessels. A synergistic approach of numerical and experimental analysis is crucial for understanding the mechanical response and predicting the final collapse accurately, providing a base for further optimization frameworks.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Marine
Xu Jiang, Changli Yu, Yongsheng Li, Yuan Zeng
Summary: The ultimate strength of medium-thick composite pressure shells under hydrostatic pressure was studied using experimental tests and finite element method. The study compared the experimental results obtained from hydrostatic destruction tests on carbon fiber/epoxy composite cylindrical pressure shells with the predictions made using finite element models based on the progressive damage mechanism of composite materials. The results showed a close agreement between the experimental and finite element results. Parametric study was also conducted to investigate the effect of radius-length ratio and radius-thickness ratio on the ultimate strength. An empirical formula was proposed to predict the ultimate strength of medium-thick composite pressure shells based on the numerical results.
Article
Engineering, Multidisciplinary
Hui Li, Haiyu Lv, Tinan Zhang, Qingkai Han, Jinguo Liu, Jian Xiong, Zhongwei Guan
Summary: A segmented degradation model was established for the accurate prediction and evaluation of the dynamic degradation characteristics of carbon fibre-reinforced epoxy composite shells. The natural frequencies and damping ratios showed different trends at different thermal degradation stages.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Engineering, Manufacturing
Yanneck Wielhorski, Arturo Mendoza, Marcello Rubino, Stephane Roux
Summary: The literature on numerical modeling of 3D woven composite reinforcements has seen a wide range of studies in the last two decades, with two distinct strategies emerging: predictive approaches involving mechanical constructions and numerical simulations, and descriptive approaches focusing on extracting real textile geometry. Different strategies have been employed for yarn behavior modeling at different scales, with a proposed common terminology for organizing and discussing strategies.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Ceramics
Chen Hu, Joseph F. F. Labuz, Takaaki Koyanagi, Jia-Liang Le
Summary: Silicon carbide (SiC) fiber-reinforced SiC matrix (SiC/SiC) composites are being considered as potential materials for fuel claddings in light water reactors. This study presents a probabilistic model for the lifetime distribution of SiC/SiC composites, anchored by a multiaxial stress-based failure criterion and subcritical damage accumulation mechanism. The analysis demonstrates the importance of understanding the static fatigue behavior and length effect on the failure probability of the cladding.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Civil
Minh-Chien Trinh, Hyungmin Jun
Summary: This paper analyzes the geometrically nonlinear behaviors of functionally graded composite shells under large displacements and large rotations. Instead of constructing conventional layer-wised models, equivalent single-layer composite shell elements based on general displacement fields are developed to model the inhomogeneity of composite materials. The mixed interpolation of tensorial components technique is used to eliminate membrane locking and shear locking phenomena. Geometrically nonlinear analyses are performed on different thin-walled composite structures, and the obtained results demonstrate good convergence characteristics and modeling capability of the developed quadrilateral composite shell elements.
THIN-WALLED STRUCTURES
(2023)
Article
Mathematics, Applied
Pavan Kumar Asur Vijaya Kumar, Aamir Dean, Shahab Sahraee, Jose Reinoso, Marco Paggi
Summary: This work proposes a thermodynamically consistent framework for coupled thermo-mechanical simulations in thin-walled structures with cohesive interfaces, utilizing solid shell parametrization and locking-free thermo-mechanical solid shell elements. It also extends the interface finite element for geometrical nonlinearities to model thermo-mechanical decohesion events, with computational implementation in ABAQUS. The predictability of the model is demonstrated through several representative examples.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2022)
Article
Materials Science, Multidisciplinary
M. C. P. Vila Pouca, P. Areias, S. Goktepe, J. A. Ashton-Miller, R. M. Natal Jorge, M. P. L. Parente
Summary: This study aims to provide a numerical framework for investigating permanent deformation caused by low-cycle fatigue. Based on experimental evidence, it was found that microdamage accumulation due to repetitive submaximal loading leads to permanent deformation, which adversely affects tissue mechanical properties and causes stress softening. The framework successfully simulated permanent deformation in pelvic floor muscles during vaginal delivery and can be an important tool for analyzing obstetrical risk factors for the development of pelvic organ prolapse.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2022)
Article
Mechanics
Patricia Lucia Zumaquero, Elena Correa, Jesus Justo, Federico Paris
Summary: The study of failure mechanisms in long fiber reinforced composites is crucial for structural design, particularly in understanding transverse damage mechanisms. Experimental results show that secondary tension does not significantly affect failure stress, while secondary compression may accelerate failure.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Bing Yan, Mingbo Tong, C. Furtado, Federico Danzi, A. Arteiro, Song Pan, Xiong Pan, Pedro P. Camanho
Summary: This article introduces an Improved Semi-analytical Method (ISM) as a quick design tool for predicting and optimizing the strength of composite scarf repair structures. It proves the feasibility of applying this method and shows its accuracy in predicting the tensile strength of scarf repair structures.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
Serafin Sanchez-Carmona, Elena Correa, Alberto Barroso, Federico Paris
Summary: The damage mechanisms of cross-ply laminates under fatigue loading have been extensively investigated. The scale effect has gained renewed importance in the case of quasi-static loads, especially with the introduction of ultra-thin plies. This study experimentally observes and analyzes the onset and progression of transverse damage in two different cross-ply laminates under tension-tension cyclic loading, providing evidence for the existence of a scale effect in the appearance of fatigue damage mechanisms.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
S. Sanchez-Carmons, A. Barroso, V. Mantic, E. Correa, F. Paris
Summary: Non-conventional failures in carbon/epoxy cross-ply laminates made of ultra-thin plies are observed, with longitudinal cracks appearing in the 90 degrees layer parallel to the loading direction instead of the expected transverse cracks. These failures can be attributed to the presence of normal stress in the thickness direction, which differs from the predictions of Classical Lamination Theory. The effects of edge and stress singularity on the stress state are investigated through numerical simulations and 3D tomography inspections.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Composites
M. Russello, G. Catalanotti, S. C. Hawkins, B. G. Falzon
Summary: This study used CNT web-based heating elements to resistance weld carbon fibre reinforced substrates. The electrothermal behavior of the CNT web was investigated experimentally, and optimal welding parameters were determined.
JOURNAL OF COMPOSITE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Patricia Lucia Zumaquero, Elena Correa, Jesus Justo, Federico Paris
Summary: The study of failure mechanisms in composite materials is crucial for efficient structural design. Analyzing the impact of transverse biaxial loads on both micro and macro levels is necessary for a comprehensive understanding of the overall damage mechanism. This research presents a finite element model that accurately replicates the elastic state of the samples, allowing for better understanding of failure occurrences and predicting failures without the complexity of experimental processes.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Mathematics, Interdisciplinary Applications
P. Areias, N. Sukumar, J. Ambrosio
Summary: We propose a PDE-based node-to-element contact formulation as an alternative to traditional geometric formulations. By constructing an approximate distance function (ADF) to the boundaries of solid objects, we achieve solutions to nonsmooth contact problems with continuous gaps using finite element discretizations. The ADF does not depend on the number of objects and a single solution of the partial differential equation uniquely defines the contact conditions for all incident points in the mesh.
COMPUTATIONAL MECHANICS
(2023)
Article
Mathematics, Interdisciplinary Applications
A. Valverde-Gonzalez, J. Reinoso, B. Dortdivanlioglu, M. Paggi
Summary: Soft materials with high deformability and susceptibility to damage events are extensively studied for applications in biomechanics. This study proposes gradient-enhanced continuum damage schemes to model the damage evolution processes in these nonlinear materials that are prone to locking issues. The novel formulations of mixed displacement-enhanced assumed strain and mixed displacement-pressure-Jacobian are derived and successfully implemented, providing satisfactory agreement with ABAQUS built-in elements. Multiple numerical applications demonstrate the effectiveness of these formulations in handling shear and volumetric locking and simulating damage phenomena.
COMPUTATIONAL MECHANICS
(2023)
Article
Mechanics
Federico Danzi, Pedro J. Silva Campos, Albertino Arteiro, Denis Dalli, Carolina Furtado, Jeremy Chevalier, Rodrigo P. Tavares, Frederic Lani, Pedro P. Camanho
Summary: This paper presents a study on the longitudinal fracture toughness of thermoplastic-based composite materials. It explores the relationship between size-effect laws and crack resistance curves using double-edge notched (DEN) specimens. The study also features the use of SEM and fractographic images to capture the main failure mechanisms, as well as CT scanning to observe early stages of crack propagation. Overall, this investigation provides a qualitative and quantitative analysis of characteristic intra-laminar failure mechanisms in thermoplastic composites.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Engineering, Mechanical
Serafin Sanchez-Carmona, Elena Correa, Alberto Barroso, Federico Paris
Summary: In this study, the fatigue life of unidirectional 90 degrees laminates (UD-90) was investigated under tension-tension loading. Several case studies were conducted to understand the influence of different conditions on the fatigue life, including the existence of porosity, surface finishing, load frequency, and prepreg thickness. S-N curves were used to analyze the data and predict the onset of transverse damages in ultra-thin plies in cross-ply laminates under cyclic loading.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Mechanics
Anatoli Mitrou, Albertino Arteiro, Jose Reinoso, Pedro P. Camanho
Summary: In this study, an equivalent single layer approach using the Phase Field method is developed to model fracture events in multidirectional balanced thin-ply laminates. The anisotropic nature of the laminates is accounted for by introducing a structural tensor based on scaled directional vectors. The scaling constants are defined using the laminate lay-up and intra-laminar fracture toughness, reducing the number of input parameters and providing a new perspective on their definition. The proposed formulation is implemented using an anisotropic conductivity matrix in Abaqus, simplifying the simulations. Experimental results are successfully reproduced, validating the model for size effects and off-axis loading responses.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Engineering, Civil
P. Areias, F. Leal, H. C. Rodrigues, J. M. Guedes
Summary: In this study, we optimize the failure criteria of fiber orientation in laminates undergoing finite strains. A fully mechanical optimization approach is adopted, in which analysis is encapsulated in a Newmark time integration equivalent to Nesterov's first-order minimization algorithm. The material properties are considered using transversely isotropic elasticity and hyperelasticity models. Two stress-based criteria, Tsai-Wu and modified Tsai-Hill, are used. The results show remarkable advantages compared to traditional optimization algorithms, even at high deformation values.
THIN-WALLED STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
M. R. Marulli, J. Bonari, J. Reinoso, M. Paggi
Summary: Indentation tests are widely used to characterize the mechanical and fracture properties of materials. This study proposes an efficient theoretical and computational framework to simulate indentation-induced cracking phenomena caused by non-conforming contacts with arbitrary-shaped indenters. The framework combines MPJR interface finite elements and a phase-field model for crack evolution. Numerical predictions successfully capture the effects of surface roughness on crack initiation and radius.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Mechanics
Zhiqiang Meng, Xu Gao, Hujie Yan, Mingchao Liu, Huijie Cao, Tie Mei, Chang Qing Chen
Summary: This paper presents a cage-shaped, self-folding mechanical metamaterial that exhibits multiple deformation modes and has tunable mechanical properties, providing multifunctional applications in various fields.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Hasan Murat Oztemiz, Semsettin Temiz
Summary: Sandwich panel composites have various applications and their mechanical behavior and performance depend on material properties and geometry. The load-carrying capacity of S-core composite sandwich panels increases with the increase of the core wall thickness, but decreases with the increase of the core height.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yang Sun, Wei Zhang, Weipeng Hu, Mabao Liu
Summary: The study presents a novel computational framework to investigate the effect of graphene percolation network on the strength-ductility of graphene/metal composites. It utilizes the Cauchy's probabilistic model, the field fluctuation method, and the irreversible thermodynamics principle.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Elaheh Kazemi-Khasragh, Juan P. Fernandez Blazquez, David Garoz Gomez, Carlos Gonzalez, Maciej Haranczyk
Summary: This study explores group interaction modelling (GIM) and machine learning (ML) approaches for predicting thermal and mechanical properties of polymers. ML approach offers more reliable predictions compared to GIM, which is highly dependent on the accuracy of input parameters.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yafei Yin, Shaotong Dong, Dong Wu, Min Li, Yuhang Li
Summary: This paper investigates a bending-induced instability in sandwiched composite structures, and establishes a phase diagram to predict its characteristics. The results are of great significance in understanding the physical mechanisms of bending instability and providing design guidelines for practical applications.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Dhairya R. Vyas, Sharen J. Cummins, Gary W. Delaney, Murray Rudman, Devang V. Khakhar
Summary: In this study, multiple collisions of granules on a substrate are analyzed using Collisional Smooth Particle Hydrodynamics (CSPH) to understand the influence of impact-induced deformation on subsequent collision dynamics. It is found that the collision dynamics are dependent on the impact location and the deformation caused by preceding impacts. The accuracy of three theoretical models is also evaluated by comparing their predictions with CSPH results, and it is discovered that these models are only useful for predicting collisions at the same location repeatedly.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Sneha B. Cheryala, Chandra S. Yerramalli
Summary: The effect of hybridization on the growth of interface crack along the fiber is predicted. The study shows an enhancement in the compressive splitting strength with hybridization due to the lateral confinement effect on the interfacial crack.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Xiang-Nan Li, Xiao-Bao Zuo, Liang Li, Jing-Han Liu
Summary: A multiscale mechanical model is proposed to quantitatively describe the macro-mechanical behavior of fiber reinforced concrete (FRC) based on its multiscale material compositions. The model establishes the stiffness and strength equations for each scale of FRC and demonstrates the influence of steel fiber parameters on the mechanical properties of FRC.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Vicente Ramirez-Luis, Hilario Hernandez-Moreno, Orlando Susarrey-Huerta
Summary: In this paper, a Multicell Thin-walled Method is developed for studying the stress distributions in multimaterial beams. This method accurately obtains complex stress fields while reducing the solution time and computational cost. Validation with the finite element method confirms the accuracy of the proposed method.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yanfeng Zheng, Siyuan Li, Jingyao Zhang, Yaozhi Luo
Summary: This study proposes an enhanced simplified model based on finite particle method (FPM) to consider the link cross-sectional size and contact in Bennett linkages. The model introduces virtual beams and contact forces to accurately simulate the real-world behavior of Bennett linkages. The proposed method is effective for dynamic analysis of large-scale deployable Bennett linkages and shows great potential.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Viktoriya Pasternak, Heorhiy Sulym, Iaroslav M. Pasternak
Summary: This paper investigates anisotropic elastic, magnetoelectroelastic, and quasicrystal solids and presents their equations of time-harmonic motion and constitutive relations in a compact and unified form. A matrix approach is proposed to derive the 3D time-harmonic Green's functions for these materials. The effects of phason field dynamics on the phonon oscillations in quasicrystals are studied in detail. The paper provides a strict proof that the eigenvalues of the time-harmonic magnetoelectroelaticity problem are all positive. It also demonstrates the application of the obtained time-harmonic Green's functions in solving boundary value problems for these materials using the derived boundary integral equations.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Jan Tomec, Gordan Jelenic
Summary: This paper investigates the relationship between different formulations and contact-force models in beam-to-beam contact mechanics. It specifically addresses the recently developed mortar method and develops its variant based on the penalty method. The developed elements are tested using the same examples to provide an objective comparison in terms of robustness and computational cost.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Paulo Teixeira Goncalves, Albertino Arteiro, Nuno Rocha, Fermin Otero
Summary: This work presents a novel formulation of a 3D smeared crack model for unidirectional fiber-reinforced polymer composites based on a stress invariant approach for transverse yielding and failure initiation. The performance of the model is evaluated using monotonic and non-monotonic damage evolution, verified with single element tests and compared with experimental results.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Hanbin Yin, Yinji Ma, Xue Feng
Summary: This paper investigates the peeling behavior of a viscoelastic film bonded to a rigid substrate and establishes a theoretical peeling model. The study reveals three typical relationships between the peeling force and peeling velocity, which depend on the viscous dissipation within the film and the rate-dependent adhesion at the interface. Additionally, factors such as film thickness, interfacial toughness, and interfacial strength are identified as influencing the steady-state peeling force.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Peter Noe Poulsen, John Forbes Olesen
Summary: Finite Element Limit Analysis (FELA) is increasingly used to calculate the ultimate bearing capacity of structures made of ductile materials. This study presents a consistent and general weak formulation based on virtual work for both the lower and upper bound problem, ensuring uniqueness of the optimal solution. A plane element with linear stress variation and quadratic displacement field is introduced, showing good results for load level, stress distribution, and collapse mechanism even for coarse meshes in verification and reinforced concrete examples.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
