Article
Materials Science, Multidisciplinary
Vinyas Mahesh, Dineshkumar Harursampath
Summary: In this article, the nonlinear deflection problem of magneto-electro-elastic shells reinforced with carbon nanotubes under multiphysics loads is addressed. A mathematical model based on higher-order shell theory is derived, and the influence of coupling fields and various parameters on the deflection is studied. The findings provide valuable insights for aerospace research and development.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Computer Science, Interdisciplinary Applications
Vinyas Mahesh, Dineshkumar Harursampath
Summary: This article proposes a finite-element formulation based on higher order shear deformation theory (HSDT) to evaluate the nonlinear frequency characteristics of carbon nanotube reinforced magneto-electro-elastic (CNTMEE) plates. The effects of electro-magnetic circuits on the nonlinear coupled behavior of CNTMEE plates are investigated for the first time in the literature. The study reveals the influence of coupling fields on the nonlinear frequency response of CNTMEE plates by considering different forms of CNT distributions and adjusting parameters.
ENGINEERING WITH COMPUTERS
(2022)
Article
Engineering, Mechanical
M. Vinyas, D. Harursampath
Summary: A new higher order finite element model for studying the static behavior of HTMEE plates with different electro-magnetic circuits is proposed in this work. The correctness of the FE model is verified and the influence of electromagnetic boundary conditions on the plates is studied in detail. The results are groundbreaking and set a benchmark for future research on multifunctional structures.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2021)
Article
Computer Science, Interdisciplinary Applications
Vinyas Mahesh, Dineshkumar Harursampath
Summary: This study evaluates the large/nonlinear deflection of functionally graded magneto-electro-elastic porous flat panels, considering geometric skewness and under combined mechanical, electrical, and magnetic loads. Mathematical formulation is derived using higher order shear deformation theory and von-Karman's geometric nonlinearity with finite element method (FEM). The analysis investigates the effect of key parameters such as skew angle, porosity distribution, gradient index, porosity volume, functionally graded pattern, and electromagnetic loads on the deflection of FG-MEEP flat panels, while also assessing the degree of coupling associated with these parameters.
ENGINEERING WITH COMPUTERS
(2022)
Article
Mechanics
Liming Zhou, Jiye Wang, Mingrui Liu, Ming Li, Yingbin Chai
Summary: The study employs the enriched finite element method (EFEM) to solve the transient dynamics of Magneto-electro-elastic (MEE) intelligent structures, demonstrating their characteristics with the implicit Newmark integration method. The EFEM enhances traditional FEM shape functions with interpolation cover functions to capture higher gradients of field variables and smooth out inter-element stress jumps. Results show a good agreement with analytical results and illustrate the superior abilities of EFEM in handling multi-physical coupling problems compared to traditional FEM.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Ya-Fei Zhao, Shun-Qi Zhang, Xiang Wang, Song-Yun Ma, Guo-Zhong Zhao, Zhan Kang
Summary: This article develops a geometrically nonlinear finite element formulation based on the first-order shear deformation hypothesis for static and dynamic analysis of carbon nanotube reinforced magneto-electro-elastic plates. It verifies the proposed model and studies the impact of different functionally graded patterns on reinforcement efficiency.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Liming Zhou, Yan Gao
Summary: Magneto-electro-elastic (MEE) composites have promising application prospects due to their rapid response to external electric or magnetic fields. The enriched finite element method (EFEM) is an improved version of the standard finite element method (FEM) that can effectively solve the multi-physics coupling issues in MEE-based structures. The mechanical-electro-magnetic coupling enriched finite element method (MEM-EFEM) was proposed specifically for the complex coupling mechanism in MEE-based structures, and it outperforms the regular FEM in terms of convergence, accuracy, and element usage.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Mechanics
Zheng Gong, Yinxiao Zhang, Ernian Pan, Chao Zhang
Summary: In this work, the concentration and distribution of field along the wall of elliptic holes in anisotropic magneto-electro-elastic (MEE) materials were systematically analyzed using a three-dimensional finite-element formulation implemented in COMSOL software. The proposed model was validated and applied to the design of multiferroic composites with an open hole. The distribution of stress and influence of hole shape, plate thickness, and stacking sequence were investigated.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2023)
Article
Engineering, Aerospace
Surendra Verma, Babu Ranjan Thakur, B. N. Singh, D. K. Maiti
Summary: In this study, the geometrically nonlinear bending analysis of multilayered composite plates is conducted using Green-Lagrange and von Karman nonlinearity, with the performance of the model validated through comparison with existing literature and ANSYS results. The results demonstrate the essential consideration of Green-Lagrange nonlinearity for plates with specific boundary conditions, and highlight the accuracy of TSDT and NPSDT for symmetric and anti-symmetric cross-ply plates. Additionally, the impact of penalty for various theories and problems is emphasized, with significant effects asserted for certain cases.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
Article
Mechanics
Kiran Madrahalli Chidanandamurthy, Wei Wang, Cheng Fang, Subhaschandra Kattimani
Summary: In this article, a new mathematical model is proposed to develop a porous skew partially functionally graded magneto-electro-elastic plate. The model combines stepped functionally grade plates and modified power law approximation. The study investigates the influence of various factors, such as partial gradation, porosity distribution, porosity volume, and skew angle, on the natural frequency and mechanical behavior of the plate.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Engineering, Mechanical
Ye Tang, Tao Wang, Zhi-Sai Ma, Tianzhi Yang
Summary: A novel magneto-electro-elastic model of bi-directional functionally graded materials beams is developed to investigate nonlinear dynamics, showing that asymmetric modes induced by 2D FGMs significantly impact nonlinear responses. The influences of material distributions, length-thickness ratio, electric voltage, magnetic potential, and boundary conditions on nonlinear resonant frequency and response amplitude are discussed, highlighting the potential for accurate design of multi-ferroic composite structures through adjustments in material properties.
NONLINEAR DYNAMICS
(2021)
Article
Engineering, Mechanical
Vinyas Mahesh
Summary: This research work investigates the nonlinear damped transient response of FG-CNTMEE shells using finite element methods, obtaining controlled response through ACLD treatment. Different forms of load cases and the influence of electro-magnetic boundary conditions are considered. The equations of motion are derived using the principle of virtual work, and solutions are obtained through condensation approach and direct-iterative method.
JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES
(2022)
Article
Materials Science, Multidisciplinary
Vinyas Mahesh
Summary: This article presents a higher-order nonlinear finite element formulation to evaluate the nonlinear deformation of functionally graded magneto-electro-elastic porous shells under the influence of electro-magnetic and mechanical loads. Different gradients, porosity distributions, and electromagnetic loads are analyzed for their effects on the nonlinear central deflection of FG-MEEP shells, with attention paid to distinguishing structural responses at fully coupled and uncoupled states.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Jalal Khaghanifard, Amir R. Askari, Mohsen Taghizadeh, Jan Awrejcewicz, Peter D. Folkow
Summary: This paper nonlinearly models cantilever-based functionally graded magneto-electro-elastic energy harvesters (FGMEEEH) for the first time. The coupled magneto-electro-mechanical model is obtained on the basis of the Euler-Bernoulli beam theory. A hybrid procedure including Ritz's method is then utilized to generate reduced order models for both asym-metric unimorph and symmetric bimorph configurations.
APPLIED MATHEMATICAL MODELLING
(2023)
Article
Mechanics
Liming Zhou, Fangting Qu
Summary: Many engineering problems involve the coupling or interaction between different physics fields. In order to improve the efficiency and accuracy of calculations for magneto-electro-elastic materials in multiphysics fields, the MEE coupling isogeometric analysis method (MIGAM) is proposed. This method uses non-uniform rational B-spine (NURBS) functions for both geometric and analytical models, achieving seamless integration and ignoring mesh density effects. The MEE models, constructed using NURBS functions, are used to investigate the multiphysics coupling effects and static/dynamic responses under thermal and mechanical loading. Compared to the finite element method, MIGAM achieves higher efficiency by using fewer control points while maintaining sufficient accuracy for coupling multiphysics problems.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Vishwas Mahesh, Vinyas Mahesh, Sharnappa Joladarashi, S. M. Kulkarni
Summary: The use of laboratory testing is important in evaluating the abrasion resistance of flexible reinforcement materials in armor and car structural components. This study examines the wear of compliant composites made of woven jute fabric and natural rubber under two- and three-body conditions and identifies different wear mechanisms.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Materials Science, Composites
Athul Joseph, Vishwas Mahesh, Vinyas Mahesh
Summary: This study investigates the compressive properties of additive manufactured hexagonal honeycomb structures under different loading rates. The results indicate that the compression properties are influenced by the loading rate, material properties, and cell-wall thickness. The study suggests that these structures have potential applications in aerospace, automotive, and sports industries where high strength and energy absorption are essential.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Mechanics
A. Phanendra Kumar, Shaikbepari Mohmmed Khajamoinuddin, Ramesh Gupta Burela, Vinyas Mahesh, Dineshkumar Harursampath
Summary: This study analyzed a novel application of a reconfigurable antenna made with rectangular composite laminates using the Variational Asymptotic Method (VAM). Thermal analysis and parametric studies were conducted to identify the multistable characteristics of the antenna, which were validated against 3D finite element analysis.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Mechanics
Vinyas Mahesh
Summary: This study examines the nonlinear dynamic response of MEEFG plates subjected to blast loads and operating in a temperature environment. The impact of pyrocoupling and blast loads on the coupled nonlinear behavior of smart MEEFG plates is investigated. The material properties of MEEFG plates are calculated using the modified power law, and the kinematics of the plate follow Reddy's higher-order shear deformation theory. The von-Karman's equations are used to introduce nonlinearity into the model.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Materials Science, Multidisciplinary
Arjun Siddharth Mangalasseri, Vinyas Mahesh, Vishwas Mahesh, Sathiskumar A. Ponnusami, Dineshkumar Harursampath
Summary: This study analytically investigates the influence of the interphase region in a three-phase magneto-electro-elastic composite material on the energy harvesting characteristics of a vibration based cantilever beam. The findings suggest that the interphase volume fraction and composition, as well as the resistance and number of turns of the coil, significantly affect the performance of the energy harvester. The results highlight the importance of the interphase region in the coupled energy harvesting behavior of multifunctional composite materials.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Mechanical
Vishwas Mahesh, Vinyas Mahesh, Dineshkumar Harursampath
Summary: The current study investigates the mechanical performance of hybrid composites and how it is affected by the composition, arrangement, and sequencing of fibers. Four distinct hybrid composites were created using a hand-layup approach, with varying stacking sequences of jute, coir, and carbon fibers. It was found that adding carbon fibers to the core and skin enhanced the mechanical properties of the composites. The fractography of the composites was also studied using a scanning electron microscope.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Engineering, Mechanical
Vinyas Mahesh
Summary: This study investigates the impact of auxeticity synergised with the pyro-coupling behavior of multiphase magneto-electro-elastic (M-MEE) composites using finite element analysis. The nonlinear deflection and bending of sandwich plates with auxetic core and M-MEE skins under multi-physics load are examined. Parametric studies reveal that the plate deflection and bending behavior are significantly influenced by the auxetic cell dimensions and electro-magnetic loads. The integrated effects of auxeticity and pyro-coupling are not yet reported in the open literature and can serve as a future reference.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Vinyas Mahesh, Vishwas Mahesh, Sathiskumar A. Ponnusami
Summary: This study uses a novel finite element method (FEM) - artificial neural network (ANN) approach to evaluate the nonlinear deflections of a smart sandwich plate with agglomerated Carbon Nanotubes (CNTs) porous core and piezo-magneto-electric (PME) facings. For the first time, an ANN-based computational tool that integrates the effects of CNTs agglomeration, porosity, and pyro-coupling of the PME materials is presented. The primary focus of this work is to assess the variation in the degree of pyro-coupling associated with agglomeration and porosity.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Virendra Pratap Singh, Ashish Kumar, Rajan Kumar, Anchit Modi, Deepak Kumar, Vinyas Mahesh, Basil Kuriachen
Summary: A comprehensive study was conducted on the behaviour of an AA6061-T6 alloy joint through friction stir welding. The investigation focused on the relationship between microstructure and strength in the joint under different processing parameters. Multiple techniques such as SEM, XRD, optical microscopy, and EDS were used to explore intermetallic compounds and their phases, as well as mechanical properties like tensile strength, hardness, and residual stress. The findings revealed the evolution of grain boundaries and the presence of second-phase particles. It was observed that a rotational speed of 800 rpm resulted in improved hardness, tensile strength, and flexural strength.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Composites
Vinyas Mahesh, Jerin P. George, Vishwas Mahesh, Himadree Chakraborthy, Sriram Mukunda, Sathiskumar Anusuya Ponnusami
Summary: This article investigates the synergistic effect of organically modified montmorillonite (OMMT) nanoclay and short carbon fibers (SCFs) on the tribological behavior of additively manufactured Polyethylene Terephthalate Glycol (PETG) nanocomposites. The specific wear rate (SWR) and coefficient of friction (CoF) of the nanocomposites were assessed through dry-sliding wear tests. An artificial neural network (ANN) methodology was proposed to accurately predict the wear performance of PETG nanocomposites. The proposed ANN methodology showed agreeable accuracy in predicting SWR and CoF, leading to reduced experimentation costs and time.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Engineering, Mechanical
Nithin U. Aithal, Vishwas Mahesh, Vinyas Mahesh, Sathiskumar Anusuya Ponnusami, Dineshkumar Harursampath
Summary: This study explores the potential uses and challenges associated with cenosphere, a waste product from coal combustion. By adding cenosphere as a filler to carbon fiber-reinforced polymer sandwich composites, the mechanical properties of the composite materials, including tensile strength, flexural strength, interlaminar shear strength, and impact strength, can be significantly enhanced.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2023)
Article
Materials Science, Composites
Surjeet Singh Bedi, Vasu Mallesha, Vishwas Mahesh, Vinyas Mahesh, Sathiskumar Anusuya Ponnusami
Summary: This study investigates the influence of graphene on the mechanical properties of additive-manufactured polyethylene terephthalate glycol (PETG) composites. Different compositions of PETG/graphene composites were prepared with varying graphene content. The fabricated specimens were 3D printed and analyzed using scanning electron microscope. The results show that the PETG/0.04 wt.% graphene composite achieves the optimum mechanical properties, with significant improvement in tensile, compression, flexural, and impact strengths.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Vinyas Mahesh, Vishwas Mahesh, Sathiskumar A. A. Ponnusami, Dineshkumar Harursampath
Summary: This article presents the use of an artificial neural network (ANN) based machine learning (ML) strategy to predict the coupled frequency of geometrically skewed multiphase magnetoelectric (MME) composite plate exposed to hygrothermal environment. The ANN model is trained using a dataset of over one million simulations conducted using a finite element formulation. The trained ANN model accurately predicts the natural frequency of the MME plate with a maximum error of 2.3% and is found to be 6.3 times faster than finite element simulations.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Materials Science, Composites
Vinyas Mahesh
Summary: The acoustic properties of 3D printed PETG nanocomposites were experimentally investigated and an artificial neural network-based prediction methodology was developed. The results showed that higher weight percentages of nanoclay and carbon fibers had a beneficial effect on sound absorption.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Multidisciplinary
Virendra Pratap Singh, Deepak Kumar, Vinyas Mahesh, Dineshkumar Harursampath, Basil Kuriachen
Summary: The nano-scale tribological behavior of a Colmonoy 6 coating deposited over SS304 steel using plasma transferred arc (PTA) cladding technique was studied. The presence of second phases in the coating contributed to both dispersion and solid solution strengthening. Despite being harder than the substrate, the coating showed increased wear and friction due to its high interfacial shear strength.
Article
Mechanics
Rawan Aqel, Patrick Severson, Rani Elhajjar
Summary: A novel core splice joint configuration for composite sandwich structures is studied and proposed to improve the strength and toughness. Experimental and numerical efforts show that this configuration can significantly increase the ultimate strength by 13% to 51% and the toughness by 2% to 35%.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xianheng Wang, Cong Chen, Jinsong Zhang, Xinming Qiu
Summary: In this paper, a new form-finding method based on spatial elastica model (FMSE) is proposed for elastic gridshells. The method integrates the deformations of elastic rods into the overall deformation of the gridshell, and solves a set of transcendental equations using the quasi-Newton method to ensure the deformation satisfies the given boundary conditions. The method is validated through experiments and expected to have potential applications in the investigations of elastic gridshells.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Hao Huang, Zitong Guo, Zhongde Shan, Zheng Sun, Jianhua Liu, Dong Wang, Wang Wang, Jiale Liu, Chenchen Tan
Summary: The conventional evaluation of 3D braided composites' mechanical properties through numerical and experimental methodologies hinders material application due to the expenses, time constraints, and laborious efforts involved. This study establishes a multi-scale finite element model and a surrogate model for predicting the elastic properties of 3D4D rotary braided composites with voids. By optimizing a neural network model, the results are validated and provide valuable insights into the microstructure and properties of these composites.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xinyu Li, Hao Zhang, Haiyang Yang, Junrong Luo, Zhongmin Xiao, Hongshuai Lei
Summary: Due to their excellent mechanical properties and design flexibility, fluted-core composite sandwich structures have gained significant attention in aerospace and rail transit applications. This study investigated the free-vibration characteristics and optimized design of composite fluted-core sandwich cylinders through theoretical models and experimental tests.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Chao Li, Chunzheng Duan, Xiaodong Tian, Chao Wang
Summary: A mechanistic model considering the bottom edge cutting effect and the anisotropic characteristics of the material is proposed in this paper to accurately predict cutting forces. The model was validated through a series of milling experiments and can be used to predict the cutting force of various parts of the cutter and any feed direction.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Camila Sanches Schimidt, Leopoldo Pisanelli Rodrigues de Oliveira, Carlos De Marqui Jr
Summary: This work investigates the vibro-acoustic performance of graded piezoelectric metamaterial plates. The study shows that piezoelectric metamaterial plates with reconfigurable properties can provide enhanced vibration and sound power attenuation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jun Ke, Li-jie Liu, Zhen-yu Wu, Zhong-ping Le, Luo Bao, Dong-wei Luo
Summary: Compared with other green natural fibers, ramie has higher mechanical properties and lower cost. In this study, ramie and glass fiber are made into composite circular tubes. The results show that the hybrid circular tube with ramie and glass fiber has improved torsional mechanical properties and reduced weight and cost. The failure mechanisms are affected by the loading direction and the content of each fiber.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Natalia Pingaro, Gabriele Milani
Summary: This paper proposes an enhanced analytical model for predicting the behavior of FRCM samples tested under standard tensile tests. The model takes into account the interaction between fibers and matrix through the interface, and assumes different material properties at different phases. By solving a second order linear differential equation, an analytical solution can be obtained. The model is validated with experimental data and shows good predictability.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jialiang Fan, Anastasios P. Vassilopoulos, Veronique Michaud
Summary: This article investigates the effects of voids, joint geometry, and test conditions on the fracture performance of thick adhesive Double Cantilever Beam (DCB) joints. It concludes that grooved DCB joints with low void content tested at low displacement rates showed stable crack propagation without significant crack path deviation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Auwalu I. Mohammed, Kaarthikeyan Raghupathy, Osvaldo De Victoria Garcia Baltazar, Lawson Onokpasah, Roger Carvalho, Anders Mogensen, Farzaneh Hassani, James Njuguna
Summary: This study investigates the performance of composite pressure vessels under damaged and undamaged conditions, providing insights into their reliability and residual strength capabilities. The results demonstrate that the damage profile and its effect on compressive strength are similar between damaged and non-damaged cylinders. When subjected to quasi-static compression, the polyethylene liner absorbs enough elastic strain energy to recover without plastic deformation. Additionally, quasi-static compression has little to no influence on the axial strength of the cylinders. The damage characterization reveals fiber breakage, delamination, local buckling, and brooming failure. This study has direct implications for the safety design tolerances, manufacturing strategies, and operational failure conditions of composite overwrapped pressure vessels (COPVs).
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Muhammad Irfan Shirazi, Samir Khatir, Djilali Boutchicha, Magd Abdel Wahab
Summary: Structural health monitoring is important to ensure the safety of components and structures. This study proposes a method using finite element models and 1D-CNN network to extract and classify vibration responses for crack detection. The results show that the proposed approach is effective in real-time damage detection.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Maryam Mirsalehi, Kiarash Kianpour, Sharif Shahbeyk, Mohammad Bakhshi
Summary: This study comprehensively investigates the one-way response of 3D-woven sandwich panels (3DWSPs) and their interfering parameters, providing interpretation of elastic and failure results, failure maps, and reliable theoretical models for linear elastic response and observed failure mechanisms.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Yiming Zhao, Zhonggang Wang, Zhigang Yang, Bin Qin
Summary: The paper proposes a Ritz and statistical energy analysis (Ritz SEA) hybrid method for calculating rectangular plate acoustic vibration coupling in the mid-frequency range. This method combines the fast convergence and ability to handle arbitrary boundary conditions of the Ritz method with the power flow equation of the statistical energy analysis method. The results show that this approach effectively filters out random fluctuations in mid-frequency domains while demonstrating exceptional stability and precision.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Joao Henrique Fonseca, Woojung Jang, Dosuck Han, Naksoo Kim, Hyungyil Lee
Summary: This study addresses the enhancement of an injection-molded fiber-reinforced plastic / metal hybrid automotive structure and its plastic injection molding process through the integration of the finite element method, artificial intelligence, and evolutionary search methods. Experimental validation of finite element models, the generation of a database through orthogonal array and Latin hypercube methods, and the training of artificial neural networks are conducted. The genetic optimization algorithm is then applied to identify optimal process parameters. The results show significant reduction in product warpage and manufacturing time while maintaining structural strength, contributing to the advancement of composite automotive structures with superior quality.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Alessandro Vescovini, Carina Xiaochen Li, Javier Paz Mendez, Bo Cheng Jin, Andrea Manes, Chiara Bisagni
Summary: This paper presents a study on six single-stringer specimens manufactured using the card-sliding technique with non-crimp fabrics and adopting a Double-Double (DD) stacking sequence. The specimens were tested under compression loading conditions to investigate post-buckling and failure in aerospace structures. Experimental results and numerical simulations were compared to analyze the behavior and failure modes of the specimens. The study found promising evidence of a viable solution to optimize aeronautical structures and enhance resistance to skin-stringer separation, particularly with the use of tapered flanges.
COMPOSITE STRUCTURES
(2024)
