Design and Optimization of a New Type of Magnetic Suspension Vibration Absorber for Marine Engineering DOI Creative Commons

Changming Dai,

Zhengyuan Liu, Yu Wang

et al.

Journal of Marine Science and Engineering, Journal Year: 2023, Volume and Issue: 11(11), P. 2070 - 2070

Published: Oct. 30, 2023

The magnetic suspension damper, which is based on technology, receiving more and attention from academics as active–passive hybrid damping technology develops. A new symmetric structure constructed in this study, the accuracy of simulation findings confirmed by contrasting output finite element with theoretical formulations. On basis this, how structure, size, material electromagnet armature affect flux density, electromagnetic force, force investigated. optimization was performed accordance results, a produced. results demonstrate that DT4(electrical pure iron) ideal for armatures electromagnets. reinforcing ring construction can be built up to increase force. will greatly increased when size placement are right. system stiffness adjustment range expand at point, enhancing damper’s functionality. This study offers novel perspectives designing structures reduce vibration noise various projects serves guide constructing dampers.

Language: Английский

Boosting microwave absorption performance of bio-gel derived Co/C nanocomposites DOI Open Access
Yi-Ming Zhong, Dechun Liu,

Qiuyun Yang

et al.

Engineered Science, Journal Year: 2023, Volume and Issue: unknown

Published: Jan. 1, 2023

The Co/C nanocomposites toward outstanding electromagnetic (EM) microwave absorption were meticulously designed and prepared by bio-gel method.The Co nanoparticles embedded into the carbon network constructed agar powder.Our obtained exhibited excellent EM wave performance including wide bandwidth (7.1 GHz), thin thickness (1.71 mm), light weight effective absorbing frequency.Dielectric relaxation at multilayer interfaces, porous biomass materials magnetic are main sources for enhancing properties.The amorphous in material prevents condensation oxidation of nanoparticles, thus contributing to generation good impedance matching.On basis percolation theory, optimal content was determined, a model suitable established.

Language: Английский

Citations

38

Vibrational response of a sandwich microplate considering the impact of flexoelectricity and based on a novel porous-FGM formulation DOI
A. Kaveh,

Hossein Babaei,

Saeid Zavari

et al.

Mechanics Based Design of Structures and Machines, Journal Year: 2024, Volume and Issue: 52(11), P. 9122 - 9143

Published: April 10, 2024

Flexoelectricity indicates a unique characteristic of insulators and dielectric materials that results in electrical polarization induction response to the non-uniform strain gradient. The impact this property is bolder on microscale nanoscale rather than macroscale. This article conducted derive governing equations motion for flexoelectric-multilayer structure evaluate its vibrational behavior various variable variations. model includes functionally graded (FG) porous core which confined between two flexoelectricity-based face sheets at both sides Vlasov type foundation. To gain equations, new power law material beside Hamilton's principle (HP) modified couple stress theory (MCST) implemented. Capturing effects length scale parameter, different materials, aspect thickness ratios, porosity index, foundation parameter boundary conditions (B.C.s) normalized natural frequency (NNF) such multilayer based novel FG formulation serve as main novelty article. According results, it revealed lateral ratio enhancement causes NNF stiffness reduction model. Furthermore, among all considered B.C.s, simply support (SSSS) clamped (CCCC) refer lowest highest respectively. content recent serves good source provide better understanding high stiffness-to-weight structures

Language: Английский

Citations

13

Vibration characteristics of multilayer functionally graded microplates with variable thickness reinforced by graphene platelets resting on the viscoelastic medium under thermal effects DOI Creative Commons
Jintara Lawongkerd, Peyman Roodgar Saffari, Thira Jearsiripongkul

et al.

International Journal of Thermofluids, Journal Year: 2024, Volume and Issue: 22, P. 100611 - 100611

Published: Feb. 16, 2024

Due to their improved mechanical properties and adaptability, microplates with tailored variable thickness profiles are becoming essential parts of advanced micro- nanoelectromechanical systems (MEMS NEMS). This study conducts a thorough analytical analysis the vibration thermally loaded, multilayer functionally graded graphene platelet-reinforced composite (FG-GPLRC) linearly or parabolically varying resting on viscoelastic medium under different boundary conditions. The Halpin-Tsai micromechanical model law mixtures employed calculate effective material characteristics for various reinforcement distributions in microplate. These encompass uniformly symmetric asymmetric arrangements. utilized first-order shear deformation theory (FSDT) conjunction modified strain gradient (MSGT) Hamilton's principle generate dynamic governing equations structure, accounting size-dependent effects. resulting afterwards solved using utilization Galerkin technique. enables evaluation proposed solution's correctness precision. impact factors behavior is investigated through numerical analysis. length scale parameters, temperature fluctuations, distribution profiles, conditions, pattern GPL, taper constants both unidirectional bidirectional scenarios, weight fraction GPL.

Language: Английский

Citations

9

Energy harvesting performance of fluid-immersed bimorph FG-GPLRC sandwich microplates in thermal gradient and magnetic field environments: A modified strain gradient theory approach DOI
Pouyan Roodgar Saffari, Peyman Roodgar Saffari, Teerapong Senjuntichai

et al.

European Journal of Mechanics - A/Solids, Journal Year: 2025, Volume and Issue: unknown, P. 105635 - 105635

Published: March 1, 2025

Language: Английский

Citations

1

Active layer damping of bi-directionally tapered functionally graded sandwich plates with 1-3 piezoelectric composites DOI

Sai Kumar Shada,

Subhaschandra Kattimani,

М. Р. Рамеш

et al.

Mechanics of Advanced Materials and Structures, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 20

Published: April 24, 2024

Language: Английский

Citations

5

Hygrothermomechanical loading-induced vibration study of multilayer piezoelectric nanoplates with functionally graded porous cores resting on a variable viscoelastic substrate DOI Creative Commons
Thira Jearsiripongkul, Peyman Roodgar Saffari, Chanachai Thongchom

et al.

International Journal of Thermofluids, Journal Year: 2024, Volume and Issue: 23, P. 100715 - 100715

Published: May 28, 2024

Language: Английский

Citations

5

On the vibrational analysis of small-scale flexoelectric multi-layer plates based on the modified porous EP-FG formulations DOI

Guobin Si,

Mohamed Héchmi El Ouni,

Mehran Mozafarjazi

et al.

Acta Mechanica, Journal Year: 2024, Volume and Issue: 235(9), P. 5843 - 5861

Published: July 16, 2024

Language: Английский

Citations

4

Equivalent orthotropic material parameters identification of electrical machines for modal analysis utilizing a PSO-assisted theoretical approach DOI
Wenzhe Deng, Chaofan Dong, Zhe Qian

et al.

Mechanical Systems and Signal Processing, Journal Year: 2024, Volume and Issue: 222, P. 111765 - 111765

Published: July 27, 2024

Language: Английский

Citations

3

Chain relaxation of carborane segments with tailored chain length at high temperatures DOI

Chongwen Yu,

Jiaqi Sun, Xuejie Wang

et al.

European Polymer Journal, Journal Year: 2024, Volume and Issue: unknown, P. 113509 - 113509

Published: Oct. 1, 2024

Language: Английский

Citations

3

Size-dependent mechanical analysis of porous functionally graded piezoelectric micro/nanoscale structures: a literature review DOI Creative Commons
Shijie Zheng, Nan Zhang,

Zhao Xie

et al.

Smart Materials and Structures, Journal Year: 2024, Volume and Issue: 33(9), P. 093002 - 093002

Published: June 13, 2024

Abstract Recent advancements in fabrication techniques, such as the development of powder metallurgy, have made it possible to tailor mechanical properties functionally gradient piezoelectric (FGP) micro/nanostructures. This class structures can be used improve performance many micro/nanoelectromechanical systems because their spatially varying and electrical properties. The importance FGP micro/nanoscale has been demonstrated by growing number published works on size-dependent characteristics, including static bending, buckling, vibration, energy harvesters wave propagation using scale-dependent continuum-based models. Reviewing recent developments field non-classical continuum mechanics, this paper examines analysis porous micro/ nanostructures. Five sophisticated theories piezoelectricity—modified couple stress, strain gradient, surface effect, well nonlocal theory, for example—are given special consideration light potential forecast unusual characteristics micro/nanostructures devices. In future, with multi-field couplings may studied or designed, article a helpful resource.

Language: Английский

Citations

3