Free vibration analysis of rotating functionally graded CNT reinforced composite cylindrical shells with arbitrary boundary conditions

Qin, Zhaoye; Pang, Xuejia; Safaei, Babak; Chu, Fulei

doi:10.1016/j.compstruct.2019.04.046

Cited by 274 publications

(46 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dispersive curves calculated by WFEM are shown in Figure 7 by red dashed lines. The black solid lines are the analytical solution calculated by the high-order wave equation of a thin-walled cylindrical shell [32,33]. The abscissa is the normalized frequency [34],…”

Section: Dispersive Curves Of Cylindermentioning

confidence: 99%

Piezoelectric Transducers for Structural Health Monitoring of Joint Structures in Cylinders: A Wave-Based Design Approach

Wang

Fan

et al. 2020

Sensors

View full text Add to dashboard Cite

Joint structures, such as riveting, hinges, and flanges, are widely used in complex mechanical systems. A small unexpected change of a joint can lead to complicated wave-scattering in its connected waveguides. The conversion between wave modes can be used to quantify the variation of the connection status of joints. This gives rise to the challenge of exciting and sensing only one specific wave mode in practice. In this paper, transmitted wave amplitudes of a flange joint are first calculated by the wave finite element method (WFEM) to study the quantitative relationship between the local stiffness changes of the damaged site and the wave-mode conversion. Wave-mode piezoelectric transducers are subsequently designed for torsional, longitudinal, and flexural waves in cylindrical waveguides. The idea is to use the distribution and interconnection of the piezoelectric materials to cancel the charge contributed from the non-targeting waves. We conducted numerical simulations to demonstrate the selective coupling features of the designed wave transducers and found difference of several orders of magnitude in voltages between targeting wave mode and other wave modes. Four selected wave transducers were then extended to monitor the connection status of the flange. The wave-scattering features in the simulation and WFEM were verified to be in good agreement.

show abstract

Section: Dispersive Curves Of Cylindermentioning

confidence: 99%

Piezoelectric Transducers for Structural Health Monitoring of Joint Structures in Cylinders: A Wave-Based Design Approach

Wang

Fan

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

“…e artificial spring boundary technique and the method of reverberation ray matrix are used together to derive the reverberation ray matrix approach in this section and then to conduct the analysis of in-plane vibration for orthotropic rectangular plates with general boundary conditions [28][29][30][31][32][33].…”

Section: Accurate Solutions For Free In-plane Vibration Of Rectangulamentioning

confidence: 99%

“…where T δ �diag{− 1, 1} is the dual transformation matrix between δ 12 and δ 21 and T f � diag{1, − 1} that between f 12 and f 21 . Substituting equations (27)- (29) into equations (30a) and (30b) and considering the wave numbers are independent of two dual local coordinates, i.e., λ…”

Section: Accurate Solutions For Free In-plane Vibration Of Rectangulamentioning

confidence: 99%

Free In‐Plane Vibrations of Orthotropic Rectangular Plates by Using an Accurate Solution

Cao¹,

Zhong

Shao

et al. 2019

Mathematical Problems in Engineering

View full text Add to dashboard Cite

Many numerical methods have been developed for in-plane vibration of orthotropic rectangular plates with various boundary conditions; however, the exact results for such structures with elastic boundary conditions are very scarce. Therefore, the object of this paper is to present an accurate solution for free in-plane vibration of orthotropic rectangular plates with various boundary conditions by the method of reverberation ray matrix (MRRM) and improved golden section search (IGSS) algorithm. The boundary condition studied in this paper is defined as that a set of opposite edges is with one kind of simply supported boundary conditions, while the other set is with any kind of classical and general elastic boundary conditions or their combination. Its accuracy, reliability, and efficiency are verified by some numerical examples where the results are compared with other exact solutions in the published literature and the FEA results based on the ABAQUS software. Finally, some new accurate results for free in-plane vibration of orthotropic rectangular plates with elastic boundary conditions are examined and further can be treated as the reference data for other approximate methods or accurate solutions.

show abstract

“…Nanocomposite materials reinforced with CNT or graphene have been extensively utilized in different shell and plate structures in order to analyze their structural thermo-mechanical responses by many researchers in recent years. Qin et al [21] proposed unified solution for laminated FG shallow shells reinforced by graphene with general boundary conditions; upon which free vibration of FG cylindrical shells and plates reinforced by CNTs and graphene with both classic and non-classic boundary conditions were investigated [22,23]. Shokri-Oojghaz [24] stud-ied the effect of reinforcing with aggregated CNT on the stress distributions of nanocomposite sandwich cylinders based on finite element method.…”

Section: Introductionmentioning

confidence: 99%

Graphene and CNT impact on heat transfer response of nanocomposite cylinders

Behdinan

Moradi‐Dastjerdi

Safaei

et al. 2020

Nanotechnology Reviews

Self Cite

View full text Add to dashboard Cite

AbstractReinforcing polymers with nanofillers is an advanced approach to improve and manage the thermal behaviors of polymeric nanocomposite materials. Among the proposed nanofillers, graphene and carbon nanotube (CNT) with superior thermal conductivity are two advanced nanofillers, which have extensively been utilized to enhance the heat transfer responses of host polymeric materials. In this work, the impacts of randomly oriented graphene and CNT to steady state and transient heat transfer behaviors of functionally graded (FG) nanocomposite cylinders have been investigated using an axisymmetric model. Nanocomposite cylinders have been assumed to be under heat fluxes, heat convections or temperatures as different types of thermal boundary conditions. The thermal properties of the resulted nanocomposite materials are estimated by micromechanical model. Moreover, the governing thermal equations of axisymmetric cylinders have been analyzed using a highly consistent and reliable developed mesh-free method. This numerical method predicts temperature fields via MLS shape functions and imposes essential boundary conditions with transformation approach. The effects of nanofiller content and distribution as well as thermal boundary conditions on the heat transfer responses of nanocomposite cylinders are studied. The results indicated that the use of nanofiller resulted in shorter stationary times and higher temperature gradients in FG nanocomposite cylinders. Moreover, the use of graphene in nanocomposites had stronger impact on thermal response than CNT.

show abstract

Free vibration analysis of rotating functionally graded CNT reinforced composite cylindrical shells with arbitrary boundary conditions

Cited by 274 publications

References 83 publications

Piezoelectric Transducers for Structural Health Monitoring of Joint Structures in Cylinders: A Wave-Based Design Approach

Piezoelectric Transducers for Structural Health Monitoring of Joint Structures in Cylinders: A Wave-Based Design Approach

Free In‐Plane Vibrations of Orthotropic Rectangular Plates by Using an Accurate Solution

Graphene and CNT impact on heat transfer response of nanocomposite cylinders

Contact Info

Product

Resources

About