Article
Engineering, Civil
Mohammad Arefi, Shayan Mannani, L. Collini
Summary: This study investigates the thickness stretching problem of a multi-layered doubly curved shell in small scale, considering out-of-plane normal strain based on a higher-order theory. The total deflection of the nanoshell is divided into bending, shear, and stretching parts. The transient formulation of the nanoshell is derived using Hamilton's principle and nonlocal formulation, and the natural frequencies are obtained based on main input parameters.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Physics, Multidisciplinary
Shayan Mannani, Din Jin Kim
Summary: In this study, a thickness-stretching-based framework is utilized to analyze a double-curved nanosandwich by taking into account shear and normal strain components in three directions. Virtual work principles are applied to derive governing equations by calculating strain energy, kinetic energy, and energy due to external works. The piezomagnetic relations are employed in curvilinear coordinate systems under electromagnetic loads. The deflection is determined using displacement theory, which combines stretching, shear, and bending parts. The magneto-electromechanical results are presented in both tabular and graphical forms with variations in important input parameters.
WAVES IN RANDOM AND COMPLEX MEDIA
(2022)
Article
Mechanics
B. Wu, D. Peng, R. Jones
Summary: This paper discusses the fracture analysis of two collinear cracks under a thermo-magnetic-electric-elastic field, and provides analytical solutions using permeable crack models and singular integral equation. An example is used to demonstrate the effectiveness of the method, and the factors affecting the parameters around the crack surfaces are analyzed.
ARCHIVE OF APPLIED MECHANICS
(2023)
Article
Acoustics
J. Abdolhoseyni, M. Danesh
Summary: This article investigates the sound transmission characteristics of a smart functionally graded cylindrical shell equipped with magneto-electro-elastic patches in the presence of a steady fluid flow. The study shows that applying electric and magnetic fields in the low frequency band can improve the sound transmission loss, making the magneto-electro-elastic patches suitable for active structural acoustic control.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Mechanics
Vinyas Mahesh
Summary: This study investigates the damped transient response of smart sandwich plates under coupled/multiphysics loads using finite element analysis. It evaluates the effects of the auxetic core's rib-length ratio, inclination angle on the damped structural response for the first time, as well as conducts parameter studies to understand the impact of open and closed circuits on the controlled behavior of the plates.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Ya-Fei Zhao, Ying-Shan Gao, Xiang Wang, Bernd Markert, Shun-Qi Zhang
Summary: This paper proposes a finite element formulation based on the first-order shear deformation hypothesis to evaluate the static and dynamic behavior of functionally graded magneto-electro-elastic porous cylindrical shells under thermal loads. The correctness of the model is verified by comparing with literature results. Parametric studies are conducted to analyze the effects of various factors on the static and dynamic response of the cylindrical shell.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Mechanics
Mohammad Mosayyebi, Faramarz Ashenai Ghasemi, Mohammad Aghaee, Mahdi Vahdat
Summary: This study investigates the vibration behaviors of viscoelastic sandwich microplates reinforced with graphene nanoplatelets as core and actuator layers as piezoelectric face sheets. The effects of various parameters on the frequency and damping of the system are studied, and it is found that the frequency decreases as the external voltage increases.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(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
Hamid R. Talebi Amanieh, S. Alireza S. Roknizadeh, Arash Reza
Summary: This paper investigates the vibrations of a sandwich plate with functionally graded magneto-electro-elastic face sheets and a porous and viscoelastic core. It uses power-law rule modified by two types of porosity distributions to model the plates and applies first-order shear deformation plate theory to derive governing equations. The study conducts a detailed parametric analysis to assess the effects of electric and magnetic fields, core-to-face sheet thickness ratio, and power-law index on the linear vibration characteristics.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Vinyas Mahesh
Summary: This work presents a finite-element-based numerical formulation to evaluate the nonlinear deflections of magneto-electro-elastic sandwich skew plates with a viscoelastic core and functionally graded carbon nanotube-reinforced magneto-electro-elastic face sheets. The study includes parametric analyses on skew angles, carbon nanotube distributions, and volume fractions, providing insights for the design engineers in developing sophisticated smart structures for various engineering applications. The results are believed to be unique and significant in assessing the influence of pyroeffects, coupling fields, and electromagnetic boundary conditions on the nonlinear deflections of magneto-electro-elastic sandwich plates under different thermal and electromagnetic loads.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2022)
Article
Mechanics
Vinyas Mahesh
Summary: In this article, a novel finite element method - artificial neural network approach is used to study the coupled static parameters of a smart sandwich plate with agglomerated Carbon Nanotubes porous nanocomposite core and piezo-magneto-thermo-electric facings. The effects of CNTs agglomeration, porosity, and pyro-coupling of the PMTE materials are investigated. Data collected from a Finite Element computational tool are used to train the ANN model. Different agglomeration states and forms of porosity are considered for investigation. Numerical examples are solved to understand the interrelated effects of these material properties on the static parameters.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Subrat Kumar Behera, Deepak Kumar, Somnath Sarangi
Summary: This work presents a continuum physics-based constitutive model for a damaged electro-magneto-viscoelastic (EMV) material class. The model incorporates the balance laws of micro-forces for continuum damage and employs an extended theory of electro-magneto-viscoelasticity. It characterizes the rheological behavior of EMV materials through the multiplicative decomposition of the deformation gradient tensor into elastic and viscous parts. The proposed model includes the evolution equation of EMV deformation in the intermediate configuration and disintegrates the overall stress into equilibrium stress and viscosity-induced overstresses. Additionally, it introduces an alternative invariant-based damage function to incorporate damage-induced stress softening. The model's findings are in agreement with existing experimental results and successfully enable the least material parameters for damage-induced stress softening in electro-magneto-viscoelasticity.
MECHANICS OF MATERIALS
(2022)
Article
Engineering, Mechanical
Zhangxian Yuan, George A. Kardomateas
Summary: This paper analyzes the dynamic stability of sandwich beams/wide plates subjected to periodic axial loads using the Extended High-order Sandwich Panel Theory (EHSAPT). The equations of motion are derived and expressed in terms of seven generalized displacements. The dynamic stability analysis is carried out by considering the features of the periodic load profiles using Floquet theory and Bolotin's method. Stability maps for varying frequency and amplitude of the forces are presented, showing that dynamic instability can occur even when the dynamic loads are much lower than the static critical loads.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2023)
Article
Mechanics
Wei Zheng
Summary: This work presents an analytical framework for analyzing a higher-order shear deformable sandwich cylindrical shell using a thickness-stretched model and piezomagnetoelasticity relations. The sandwich shell is subjected to multiple field loadings. The study derives the multifield equations using virtual work principle and provides comprehensive numerical results that show improved radial displacement using the thickness-stretched model.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Construction & Building Technology
Yuhua Zhou, Mohamed Amine Khadimallah, Seyedmahmoodreza Allahyari, Amir Behshad
Summary: This paper investigates the stress analysis of a multi-walled hollow cylinder made from a functionally graded material sandwiched between two piezoelectric layers. The study considers various loading conditions and obtains the distributions of electro-thermo-mechanical stresses, electric potential, and radial displacement in the three layers through analytical solutions of differential equations.
STEEL AND COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Sumeet Chakraborty, Tanish Dey, Vinyas Mahesh, DineshKumar Harursampath
Summary: This study investigates the stability and vibration characteristics of randomly distributed carbon nanotube reinforced fiber composites under localized heating. Various methods and equations are used to determine the material properties and analyze the influence of different parameters on the composites.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Materials Science, Textiles
Vishwas Mahesh, Vinyas Mahesh
Summary: This study aims to explore the potential application of rubber crumb in polymer matrix composites for structural purposes. The results show that the addition of rubber crumb can reduce water absorption and improve tensile, flexural, and impact strength. The VIKOR technique successfully identifies the optimum weight percentage of rubber crumb for the proposed composites.
JOURNAL OF NATURAL FIBERS
(2023)
Article
Engineering, Multidisciplinary
Liming Zhou, Fangting Qu, Shuhui Ren, Vinyas Mahesh
Summary: In this paper, an inhomogeneous stabilized node-based smoothed radial point interpolation method (ISNS-RPIM) is proposed to analyze functionally graded magneto-electro-elastic (FGMEE) structures in hygrothermal environment. The method combines gradient smoothing technique (GST), coupling constitutive relationship, and takes into account the hygrothermo-magneto-electro-elastic (HMEE) coupling effects. Numerical examples are provided to validate the effectiveness and robustness of the proposed method. The results show that ISNS-RPIM has great potential in solving practical complex problems.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Mechanics
Hukum Chand Dewangan, Subrata Kumar Panda, Nitin Sharma, Samy Refahy Mahmoud, Dineshkumar Harursampath, Vinyas Mahesh
Summary: This work presents a numerical modeling study on the static large-deformation behavior of multilayered flat/curved panels with cutouts under thermo-mechanical load. The numerical model incorporates third order displacement polynomials and two nonlinear strains (Green-Lagrange and von-Karman) to capture the large-deformation characteristic of the panel. The governing equation is formulated using Hamilton's principle and solved using the selective integration scheme and Picard's direct iterative method.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2023)
Article
Materials Science, Composites
Vinyas Mahesh
Summary: In this research, an ANN-based data driven technique is proposed to evaluate the absorption characteristics of PETG nanocomposites reinforced with SCFs and OMMT nanoclay fillers. Different variants of PETG nanocomposites are prepared and the absorption behavior is experimentally studied. The results suggest that the absorption characteristics are significantly affected by the reinforcements and can aid in designing PETG nanocomposites with desired properties.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Multidisciplinary
Vinyas Mahesh
Summary: This research evaluates the combined effects of interphase and carbon nanotube agglomeration on the nonlinear deflection of a sandwich plate using an artificial neural network assisted finite-element approach. The data points collected from a developed computational tool are used to train the neural network model. The plate consists of agglomerated carbon nanotubes and three-phase magneto-electro-elastic composites. Different agglomeration states and carbon nanotube arrangements are considered, and interphase effects are incorporated through volume fractions and compositions. The numerical examples demonstrate the influence of coupling fields on the parameters.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2023)
Article
Engineering, Civil
Duy-Khuong Ly, Vinyas Mahesh, Chanachai Thongchom, T. Nguyen-Thoi
Summary: This study proposes an advanced cell-based smoothed discrete shear gap method (CS-DSG3) using zig-zag theory integrated with a hybrid control mechanism for analysis of smart damping control of laminated functionally graded carbon nanotube reinforced composite (FG-CNTRC) shell structures. The study successfully combines CS-DSG3 with zig-zag theory to provide an effective global-local numerical approach for analyzing the behavior of laminated FG-CNTRC shell structures.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Kanav Chadha, Vinyas Mahesh, Arjun Siddharth Mangalasseri, Vishwas Mahesh
Summary: This article introduces a lightweight vibration-based energy harvester (EH) constituted of multifunctional magneto-electro-elastic (MEE) facesheets and auxetic metamaterial core (AMC). The use of the auxetic core enhances the EH's performance, resulting in an almost 1.5 times higher power output compared to conventional metal-based energy harvesters. The auxetic-based EH also achieves a 22% weight reduction for the same power output. This research contributes to the utilization of multifunctional composites and metamaterials in complex engineering applications.
THIN-WALLED STRUCTURES
(2023)
Article
Mechanics
Vinyas Mahesh, Vishwas Mahesh, Sathiskumar Anusuya Ponnusami
Summary: In this article, the authors numerically investigate the damped nonlinear transient response of a smart sandwich plate subjected to the thermal environment. The study focuses on the synergistic influence of agglomeration, porosity, and pyro-coupling on vibration control. The results show significant effects of pyro-coupling on the active vibration control response of the sandwich plate.
Article
Mechanics
Vinyas Mahesh
Summary: This article proposes a hybrid method integrating finite element methods and artificial neural network models to predict the coupled nonlinear frequency response of porous functionally graded piezo-elasto-magnetic plates with non-uniform geometries. This approach significantly reduces computational efforts while maintaining considerable accuracy.
Article
Mechanics
Vinyas Mahesh
Summary: In this article, a novel finite element method - artificial neural network approach is used to study the coupled static parameters of a smart sandwich plate with agglomerated Carbon Nanotubes porous nanocomposite core and piezo-magneto-thermo-electric facings. The effects of CNTs agglomeration, porosity, and pyro-coupling of the PMTE materials are investigated. Data collected from a Finite Element computational tool are used to train the ANN model. Different agglomeration states and forms of porosity are considered for investigation. Numerical examples are solved to understand the interrelated effects of these material properties on the static parameters.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2023)
Article
Mechanics
Chetna Srivastava, Vinyas Mahesh, Pandi Pitchai, P. J. Guruprasad, Nik Petrinic, Fabrizio Scarpa, Dineshkumar Harursampath, Sathiskumar A. Ponnusami
Summary: The variational asymptotic method (VAM) is used to determine the equivalent elastic stiffness tensor of auxetic materials for the first time. The VAM allows rotational degrees-of-freedom of the structural elements without any assumptions. The homogenized response of the unit cells is fully anisotropic, with specific possible responses of orthotropy or transverse isotropy depending on the arrangement of structural elements. The predictions of the VAM-based method are validated using commercial finite element software and open literature, demonstrating its versatility and computational efficiency in describing auxetic metamaterials.
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
(2023)
Article
Materials Science, Composites
Vishwas Mahesh, Vinyas Mahesh, Dineshkumar Harursampath
Summary: This study utilized Artificial Neural Network (ANN) strategies to evaluate the energy absorption capabilities of eco-friendly rubber crumb/kenaf composites under low-velocity impact loads. Experimental tests and ANN models were employed to predict the energy absorption behavior of these sustainable composites. The results showed that the composite's energy absorption capabilities were influenced by the ratio of rubber crumb to kenaf and the impact velocity.
POLYMER COMPOSITES
(2023)
Article
Engineering, Chemical
Surjeet Singh Bedi, Vasu Mallesha, Vinyas Mahesh, Vishwas Mahesh, Sriram Mukunda, Sushanth Negi, Sathiskumar Anusuya Ponnusami
Summary: The focus is on the influence of fillers in high-performance polymer composites and the utilization of additive manufacturing in this process. The thermal behavior of PETG polymers reinforced with graphene flakes was assessed, and it was found that increasing the concentration of graphene enhances the thermal properties of the composites. Chemical interactions between graphene and PETG also impact the overall effectiveness of the composites.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Engineering, Chemical
Vishwas Mahesh, Vinyas Mahesh, Dineshkumar Harursampath, Jayadev Shivanna, Rakesh Chikkathotlukere Lakshmikanth, Gagana Tumkur Renukumar, Babitha Channamuddenahalli Muthuramaiah
Summary: This study investigates the factors affecting the abrasion of cenosphere-reinforced syntactic foams and assesses their three-body wear behavior using Taguchi's design of experiments. The concentration of cenospheres, duration, and applied force all influence the wear rate of the syntactic foams.
POLYMER ENGINEERING AND SCIENCE
(2023)
