Article
Engineering, Mechanical
R. K. Ojha, S. K. Dwivedy
Summary: The parametric instability regions of a three-layered sandwich plate with thin composite skins and LPRE core under axial periodic compressive load were studied using finite element method. The dynamic properties of the LPRE based sandwich plates were found to be better than those of the room temperature vulcanised elastomer core based sandwich plates, showing potential applications in structural design.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Polymer Science
Umer Sharif, Xinmei Xiang, Miaochang Zhu, Jun Deng, Jing Sun, Dauda Sh. Ibrahim, Orelaja Oluseyi Adewale
Summary: The current study focuses on the production and experimental examination of sandwich beams consisting of an aluminum face sheet and 3D-printed honeycomb cores filled with magnetorheological elastomer (MRE). The results suggest that the proposed sandwich beam constructions have the ability to alter the damping ratio, damping coefficient, and stiffness through the application of a magnetic field. Significant variations in damping were observed when the magnets were located in the central regions of the structures.
Article
Engineering, Mechanical
M. Fadaee, M. Talebitooti
Summary: This paper presents numerical results for a sandwich beam structure with different material layers, showing a stable and accurate approach. The results indicate that angular velocity and magnetic field significantly influence the natural frequencies and loss factors, with an optimal value for the magnetic field intensity.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Instruments & Instrumentation
Narongdet Sulatchaneenopdon, Zhiming Shen, Hyoung-Won Son, Anak Khantachawana, Jon Garcia-Barruetabena, Maria Jesus Elejabarrieta, Tsutomu Takahashi, Tadachika Nakayama, Koichi Niihara
Summary: The study analyzes the effect of pre-structure of the magnetorheological viscoelastic core on the dynamic response of an MRE-sandwich structure. Experimental results demonstrate that the MRE-sandwich structure can eliminate unwanted resonances and attenuate vibrations in the low frequency range. Additionally, the external magnetic field increases the structural vibrations damping capability.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Subash Acharya, Vipin J. Allien, N. P. Puneet, Hemantha Kumar
Summary: Magnetorheological fluid (MRF) sandwich beams, composed of MRF sandwiched between face layers, show potential for semi-active vibration control. Optimal particle size and weight fraction of carbonyl iron powder in MRF were determined based on maximizing damping ratio and minimizing MRF weight, with larger particles and higher weight fractions showing better vibration suppression capabilities.
INTERNATIONAL JOURNAL OF SMART AND NANO MATERIALS
(2021)
Article
Engineering, Civil
Jing Zhao, Tianhao Wang, Xiaoguang Ma, Hui Li, Jinzhai Hu, Jincan Liu, Zhijiang Gao
Summary: This study proposes a novel method to improve the vibration characteristics of sandwich plates by introducing complementary effects of graphene and magnetorheological elastomer materials. By establishing a unified model and functional gradient material distribution curves, the internal and external factors affecting the complementary effects are investigated. The proposed method is verified to be convergent and accurate in numerical simulations.
ENGINEERING STRUCTURES
(2022)
Article
Instruments & Instrumentation
Umer Sharif, Lin Chen, Beibei Sun, Dauda Sh Ibrahim, Orelaja Oluseyi Adewale, Noman Tariq
Summary: Sandwich beams with an aluminium face sheet and a magnetorheological elastomer (MRE) filled in a honeycomb core of Nylon and Resin8000 were manufactured and experimentally analysed in this study. The dynamic properties of the beams were evaluated by subjecting them to sine sweep and classic shock tests, both with and without the application of magnetic field. The experimental results showed that the sandwich beams exhibited good vibration level attenuation, particularly in the primary vibration mode. The induced magnetic field was capable of changing the natural frequencies, vibration amplitudes, and damping ratios of the sandwich beams with MRE honeycomb core.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Mechanics
Amirhossein Omidi Soroor, Mojtaba Asgari, Hassan Haddadpour
Summary: The study investigates the free linear vibration of an adaptive sandwich beam, deriving the frequency-dependent eigenvalue problem using the Rayleigh-Ritz method. It is found that changes in parameters such as magnetic field, axially functionally graded material power-law index, constraining layer, and core layer thickness have significant effects on the beam's free vibration behavior.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Moein Zanjanchi, Majid Ghadiri, Saeid Sabouri-Ghomi
Summary: This study aims to analyze the nonlinear vibration and instability of a sandwich plate with an Auxetic Honeycomb core and a Carbon Nanotube Reinforced Composite (CNTRC) face layer on a viscous elastic foundation under parametric excitation. The analytical model used the Hamilton principle and nonlinear strain-displacement relations to solve the governing equations through the Galerkin method and the multiple-scale method. The results provide valuable insight into optimizing the design of sandwich plates for engineering applications in the aerospace and automotive industries.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2023)
Article
Engineering, Civil
A. Garg, H. D. Chalak, M-O Belarbi, A. M. Zenkour
Summary: This study investigates the free vibration and bending behavior of sandwich beams containing open-cell metal foam core using zigzag theory. The governing equations for free vibration and bending behavior are determined using Hamilton's principle and the principle of minimum potential energy, respectively. Three types of pore distribution are examined in this study. The influence of pore distribution, end condition, core thickness, and foam coefficients on beam behavior is studied in detail. The face sheets are assumed to be made of the same material as the foam. It is observed that the nature of pore distribution and end conditions greatly affect the behavior of the beam.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Instruments & Instrumentation
Yuhuai Wang, Jian Yang, Zexin Chen, Yu Lin, Liping Gong, Shiwu Zhang, Weihua Li, Shuaishuai Sun
Summary: This study proposed and investigated a semi-active graded magnetorheological elastomer (MRE) metamaterial sandwich beam (GMREMSB) with real-time tunable graded stiffness to broaden the local resonant band gap. The theoretical calculation and experimental test showed that the bandwidth of the proposed GMREMSB can be widened by arranging the graded stiffness in ascending order. The experimental band gap under the graded current of 0.0-0.5-1.0 A was 6.4 Hz wider than the band gap of the periodic structure with single current of 0.0 A and 5.0 Hz wider than that of 1.0 A, with growth rates of 15.06% and 11.39%, respectively.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Chemistry, Physical
Miguel Angel Moreno-Mateos, Mokarram Hossain, Paul Steinmann, Daniel Garcia-Gonzalez
Summary: This study explores the design and performance of ultra-soft hybrid magnetorheological elastomers (MREs) through experimental and computational methods. Experimental results show that the magnetomechanical performance of hybrid MREs can be optimized by selecting an appropriate mixing ratio between particles. Computational results reveal the magneto-mechanical interactions between soft and hard particles, which are crucial for the effective response of hybrid MREs. The study uncovers new possibilities to push the frontiers of MRE solutions.
NPJ COMPUTATIONAL MATERIALS
(2022)
Article
Mechanics
Saman Sadripour, Ramazan-Ali Jafari-Talookolaei, Abdollah Malekjafarian
Summary: This paper presents a numerical solution for analyzing the free vibration of delaminated soft core sandwich plates. The delaminated sandwich plate was modeled as six interconnected sub-plates, with the delamination serving as their boundaries. The study concludes that the developed elements and proposed procedure are accurate and efficient, as demonstrated by a comparative analysis with previous research.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2023)
Article
Mechanics
Babak Mirzavand Borojeni, Shahrokh Shams, Mohammad Reza Kazemi, Mohammad Rokn-Abadi
Summary: This paper investigates the effects of temperature and magnetoelastic load on the free vibration of an elastomer sandwich beam with magnetorheological core and functionally graded material constraining layers under high temperature environment. The results show that the modal characteristics are significantly influenced by various factors.
Article
Physics, Multidisciplinary
Ahad Amiri, Roohollah Talebitooti
Summary: This study investigates the size-dependent nonlinear vibration and stability response of fluid-conveying sandwich micro-pipes using magnetorheological elastomer (MRE) as a smart core. Through numerical analysis, it was found that magnetic intensity and MRE core thickness have significant influences on the system's vibrational response. The MRE layer plays a substantial role in the vibrational properties and stability of the system.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
