Article
Chemistry, Physical
Olugbenga Ogunbiyi, Oluwashina Gbenebor, Smith Salifu, Samuel Olaleye, Tamba Jamiru, Rotimi Sadiku, Samson Adeosun
Summary: This study fabricated biodegradable polylactide (PLA) reinforced with treated coconut husk particulates (CCP) through electrospinning and RVE techniques, and compared the obtained mechanical properties. The electrospun CCP-PLA nanofibre composites showed improved mechanical properties, particularly at 4 wt.% reinforcement.
Article
Mechanics
Y. L. Zhan, W. Kaddouri, T. Kanit, Q. Jiang, L. Liu, A. Imad
Summary: The concept of equivalent morphology has been studied in depth, considering two types of composites and exploring various possible situations related to randomness and periodicity.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2022)
Article
Materials Science, Composites
Wenjun Bai, Zuer Gong, Yuan Li, Jinxiang Liu
Summary: This study proposes a method to determine the critical size of the RVE model based on statistical theory. It tests the distribution types of the models using hypothesis test methods and determines the least sample for a given confidence level using the t-test. The critical size of the RVE model is determined by analyzing the dispersion of statistics. The results show that the mechanical properties of different models for the same size follow a normal distribution, and the least sample exists where the error of mechanical properties is stable. By quantifying the dispersion of mechanical properties, the critical size of the RVE model can be determined, allowing for quantification of the error of results for an arbitrary model with this size.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
M. M. Shahzamanian, S. S. Akhtar, A. F. M. Arif, W. J. Basirun, K. S. Al-Athel, M. Schneider, N. Shakelly, Abbas Saeed Hakeem, Abba A. Abubakar, P. D. Wu
Summary: This study presents a novel material design framework based on a multi-scale modeling approach to improve the mechanical and thermal properties of ceramic cutting tools using nickel-reinforced alumina composites. The effectiveness of the framework is validated through computational homogenization methods and experimental results, and the effects of porosity and nickel volume fraction on the properties are investigated.
SCIENTIFIC REPORTS
(2022)
Article
Polymer Science
Thiago Assis Dutra, Rafael Thiago Luiz Ferreira, Hugo Borelli Resende, Luis Miguel Oliveira, Brina Jane Blinzler, Leif E. Asp
Summary: This work presents a methodology for computing equivalent volumes that represent the microstructure of 3D-printed continuous fiber-reinforced thermoplastics. Instead of generating random fiber arrangements, the methodology directly determines the statistically equivalent fiber distribution from cross-section micrographs. Different spatial descriptor functions are used to characterize the microstructures, and the minimum size of the equivalent volume required to represent the fiber distribution is determined. The effectiveness of the methodology is demonstrated by comparing the computed homogenized properties with experimentally measured values.
Article
Materials Science, Ceramics
Qiang Chen, Fengyuan Zhao, Jinhao Jia, Changjun Zhu, Shuxin Bai, Yicong Ye
Summary: This study simulated the elastic response and residual stress of ceramic matrix composites using a multiscale approach, predicted effective elastic properties, and compared them with experimental values. The developed micromechanical model showed close agreement with experimental data, validating the reliability of the theoretical model.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Pavel I. Galich, Aliya Sharipova, Slava Slesarenko
Summary: The extreme and unconventional properties of mechanical metamaterials are determined by their sophisticated internal architectures, which can be altered by utilizing the elastic instability phenomenon. Specifically, mechanical metamaterials consisting of hexagonal networks can undergo sequential buckling at different strain levels, leading to changes in their periodicity and formation of new unit cells. The critical strains for these buckling behaviors depend on the metamaterial geometry and elastic moduli ratios, and can be further controlled by the placement of rigid circular inclusions.
Article
Materials Science, Composites
Risheng Bai, Ling Xin, Zongzheng Huang, Zaoyang Guo, Yang Chen, Wenshu Yang, Gaohui Wu
Summary: This study proposes a finite element analysis approach to predict the mechanical behavior of SiC nanowires reinforced aluminum matrix composites. The results show that the volume fraction and aspect ratio of the SiC nanowires have significant effects on the mechanical properties of the composites. The extrusion treatment also has a noticeable impact on the elastic moduli and strength of the composites.
APPLIED COMPOSITE MATERIALS
(2023)
Article
Mechanics
Pawel Kudela, Maciej Radzienski, Piotr Fiborek, Tomasz Wandowski
Summary: Model-based approaches using guided waves for damage detection have great potential, but accurate representation of wave propagation behavior is crucial to avoid errors caused by improper assumptions of elastic material properties. Experimental measurements and optimization techniques are used to estimate elastic constants for improved accuracy.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Zachary H. Aitken, Viacheslav Sorkin, Zhi Gen Yu, Shuai Chen, Zhaoxuan Wu, Yong-Wei Zhang
Summary: The research presents an approach to fitting MEAM interatomic potentials to key properties of metals, enabling more accurate simulations of the continuous mechanistic processes in pure fcc metals and predicting experimental values.
Article
Materials Science, Multidisciplinary
Kevin Breuer, Axel Spickenheuer, Markus Stommel
Summary: Analyzing representative volume elements using the finite element method is a method to calculate local stress in short fiber reinforced plastics at the microscale. Results showed that stress distribution depends on the local arrangement of fibers and is unique for each fiber constellation. Additionally, statistical volume elements were used to examine the influence of locally varying fiber volume fraction.
Article
Materials Science, Multidisciplinary
Hong Sun, Amit Samanta
Summary: The study of grain boundary structural transformations and their correlation with mechanical properties is important for the development of new materials. However, the lack of accurate interatomic potentials has been a bottleneck in simulating such transformations. This study focuses on niobium as a model material and develops an interatomic potential to investigate grain boundary phase transitions, validating the potential using ab initio calculations and experiments.
COMPUTATIONAL MATERIALS SCIENCE
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
M. S. Anoop, P. Senthil
Summary: This study numerically investigates the impact of infill density, layer height, and raster orientations on the elastic behavior of FDM components, and develops a predictive model. The study reveals that FDM components exhibit directional behavior under different parameter settings. The predictive model can be used to optimize FDM components for functional applications.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Engineering, Multidisciplinary
Ashish Kumar Srivastava, Vimal Kumar Pathak, Rakesh Kumar, Rajesh Kumar
Summary: This research article estimates the impact of graphene sheet reinforcement on the elastic modulus of carbon fiber composites. The study models graphene sheet-embedded aluminum nanocomposites at the nanoscale using molecular dynamics, and then uses the resulting elastic modulus to estimate the elastic modulus at micro and macro scales. The results show that the elastic modulus of carbon fiber-embedded graphene sheet-aluminum nanocomposites is increased compared to the original carbon fiber-reinforced composites, regardless of whether the graphene sheets are stacked or not.
INTERNATIONAL JOURNAL OF MODELLING AND SIMULATION
(2023)
Article
Physics, Multidisciplinary
Farzad Ebrahimi, Ali Seyfi
Summary: The influences of waviness and agglomeration factor of nanofillers on wave dispersion of embedded nanocomposite beams reinforced with MWCNTs have been investigated. Effective mechanical properties were estimated using a new form of a micromechanical model and rule of mixture, with kinematic and kinetic relations computed based on refined higher-order shear deformation theory. The effects of various factors on wave frequency and phase velocity were illustrated and discussed in detail.
WAVES IN RANDOM AND COMPLEX MEDIA
(2021)
Article
Mechanics
Hui Liu, Xiaoyu Sun, Yuanjie Xu, Xihua Chu
COMPOSITE STRUCTURES
(2015)
Article
Mathematics, Applied
Hui Liu, Xiaoyu Sun, Yuanjie Xu, Xihua Chu
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2015)
Article
Engineering, Multidisciplinary
Ping Fu, Hui Liu, Xihua Chu, Yuanjie Xu
INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS
(2016)
Article
Engineering, Aerospace
Jun Lv, Hui Liu, Hongwu Zhang, Lei Liu
JOURNAL OF AEROSPACE ENGINEERING
(2016)
Article
Computer Science, Interdisciplinary Applications
H. Liu, H. W. Zhang
ADVANCES IN ENGINEERING SOFTWARE
(2014)
Article
Materials Science, Multidisciplinary
H. Liu, H. W. Zhang
COMPUTATIONAL MATERIALS SCIENCE
(2013)
Article
Materials Science, Multidisciplinary
H. Liu, H. W. Zhang
COMPUTATIONAL MATERIALS SCIENCE
(2013)
Article
Materials Science, Multidisciplinary
H. Liu, L. Zhang, D. S. Yang, H. W. Zhang
COMPUTATIONAL MATERIALS SCIENCE
(2014)
Article
Mathematics, Applied
Hui Liu, Hongwu Zhang
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2014)
Article
Engineering, Multidisciplinary
Hongwu Zhang, Yonggang Zheng, Jingkai Wu, Hui Liu, Zhendong Fu
INTERNATIONAL JOURNAL FOR MULTISCALE COMPUTATIONAL ENGINEERING
(2013)
Article
Engineering, Multidisciplinary
Hongwu Zhang, Hui Liu
INTERNATIONAL JOURNAL FOR MULTISCALE COMPUTATIONAL ENGINEERING
(2014)
Article
Engineering, Multidisciplinary
H. W. Zhang, H. Liu, J. K. Wu
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
(2013)
Article
Materials Science, Multidisciplinary
Baihong Chen, Changyue Liu, Zengting Xu, Zhijian Wang, Rui Xiao
Summary: In this study, both polydomain and monodomain liquid crystal elastomers (LCEs) were synthesized and their shape change with temperature under a certain stress level was characterized. A thermo-order-mechanical coupling model was developed to predict the shape change of LCEs, showing good consistency with experimental results.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Peng Wang, Fei Xu, Yiding Wang, Jun Song, Cheng Chen
Summary: This study investigates the interplay of super-screw dislocations and coherent twin boundary (CTB) in Ni3Al using molecular dynamics simulations and dislocation continuum theory. Various interaction mechanisms are observed depending on the stress and dislocation gliding pathways. A continuum model framework is developed to evaluate the critical shear stress required for CTB to accommodate dislocations along different pathways, considering the effects of anti-phase boundary (APB) and Complex Stacking Fault (CSF). The study suggests that the resistant force of CTB against all gliding dislocations is a more appropriate metric for quantifying its strength.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Chenyu Du, Haitao Cui, Hongjian Zhang, Zhibin Cai, Weikuo Zhai
Summary: A thermal-elastoplastic phase field model was developed to simulate thermal fatigue crack growth. The accuracy and availability of the model were verified through typical examples. The results indicate that the proposed model effectively simulates the process of thermal fatigue crack propagation in elastoplastic solids. The appropriate regularization length needs to be determined based on experimental results.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
J. Carlsson, A. Kuswoyo, A. Shaikeea, N. A. Fleck
Summary: The sensitivity of the compressive strength of a polymeric Kelvin lattice to the presence of an epoxy core is investigated both experimentally and numerically. The study shows that the epoxy core prevents the formation of crush bands in the lattice and changes its deformation mode. At finite strain, the strength of the lattice is degraded by bending failure and cracking of the struts and adjacent core, leading to the formation of vertical fissures.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Saptarshi Paul, Anurag Gupta
Summary: In this study, we investigate the geometry and mechanics of the buckled orthotropic von Karman elastic plate with free boundary condition, in the presence of an isolated positive or negative disclination. The shape of the buckled plate is cone-like for a positive disclination and saddle-like for a negative disclination. With increasing orthotropy, the shape of the buckled plate becomes more tent-like and the Gaussian curvature spreads along the ridge of the tent. The stress fields are focused in the neighborhood of the defect point and the ridge, indicating that most of the stretching energy is accommodated in these singular regions.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Antu Acharya, Vikram Muthkani, Anirvan DasGupta, Atul Jain
Summary: This study proposes filler-based and infill-based strategies for creating auxetic lattices with enhanced stiffness. The elastic properties of the sinusoidal re-entrant honeycomb lattice are developed and validated using finite element models. Parametric studies are conducted to find combinations leading to enhanced stiffness with minor loss in auxeticity. The results demonstrate the possibility of achieving a significant increment in stiffness while retaining significant auxeticity. The proposed approaches outperform existing approaches in terms of stiffness and auxeticity.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Biswajit Pal, Ananth Ramaswamy
Summary: This study presents a multi-scale approach to simulate the shrinkage and creep of concrete, addressing the limitations of existing macroscopic prediction models due to the heterogeneous nature of concrete. The model is validated with experimental data and compared to national codes and macroscopic models, demonstrating its effectiveness in overcoming the gaps in existing models.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Akash Kumar Behera, Mohammad Masiur Rahaman, Debasish Roy
Summary: Ceramics have attractive properties but low fracture toughness is a major drawback. There is interest in improving the mechanical performance of ceramics by tailoring residual stresses. However, there is a lack of computational models that can accurately predict crack paths and quantify the improved fracture toughness.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Bineet Kumar, Sandeep Kumar Dubey, Sonalisa Ray
Summary: This study aims to develop an energy-based theoretical formulation for predicting the evolution of the fracture process zone in concrete under fatigue loading. Experimental results and calibrations indicate that the specimen size and aggregate size affect the fracture behavior and process zone length of concrete.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Zheliang Wang, Hao Sheng, Xinyi Lin, Yifan Rao, Jia Liu, Nanshu Lu
Summary: In this study, an analytical framework is proposed for investigating the behavior of laminated beams with any number of layers under various bending conditions, and the theory is validated through finite element analysis. It was found that the number of layers, applied deformation, layer properties, and layer aspect ratio have an impact on the equivalent flexural rigidity.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Michael Schwaighofer, Markus Konigsberger, Luis Zelaya-Lainez, Markus Lukacevic, Sebastian Serna-Loaiza, Michael Harasek, Florian Zikeli, Anton Friedl, Josef Fussl
Summary: In this study, nanoindentation relaxation tests were re-evaluated on five industrial lignins extracted from different feedstocks. It was found that the viscoelastic properties of all tested lignins were practically identical and independent of the feedstock and the extraction processes.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Tian Han, Dandan Qi, Jia Ma, Chaoyang Sun
Summary: In this study, a generative design method was used to propose new modified lattice structures suitable for tensile and compressive loading conditions. By conducting experimental and finite element analyses, it was confirmed that the derived structures have improved load-bearing capacity and energy absorption compared to the original structures. The effects of shape parameters on mechanical properties were also discussed.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Wenbin Zheng, Jay Airao, Ramin Aghababaei
Summary: Spinodal decomposition of Ti1-xAlxN crystal structure significantly affects their physical properties. This study uses three-dimensional molecular dynamics simulations to investigate the phase transformation mechanism and surface finish during material removal in TiAlN. The simulations reveal that the aluminum content and cutting depth have a significant influence on the phase transformation process through spinodal decomposition.
MECHANICS OF MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Atasi Ghosh
Summary: The micro-mechanism of low cycle fatigue deformation behavior has been summarized and the recent development in the approach of numerical simulation of cyclic stress-strain behavior of polycrystalline metallic materials at multi-scale has been discussed.
MECHANICS OF MATERIALS
(2024)