Buckling Stability and Vibration Characteristics of Functionally Graded Graphene Platelet-Reinforced Composites Multi-Arc Concave Honeycomb Sandwich Panels Under Thermal Loading DOI
Wenhao Yuan, Haitao Liao, Ruxin Gao

и другие.

International Journal of Structural Stability and Dynamics, Год журнала: 2023, Номер 24(18)

Опубликована: Ноя. 3, 2023

The utilization of functionally graded graphene platelet-reinforced composites (FG-GPLRC) and honeycomb sandwich constructions is prevalent in the field engineering. Therefore, it crucial to investigate buckling vibration properties these materials under heat circumstances. This paper specifically focuses on thermal characteristics a novel multi-arc concave plate (MACHSP) equipped with an adjustable positive-negative Poisson’s ratio. governing equations motion for system are derived based first-order shear deformation theory conjunction Hamilton’s principle. formulation system’s characteristic equation involves establishment displacement functions that satisfy distinct boundary conditions. Using computational programming, natural frequencies, mode shapes, critical temperatures MACHSP three different FG-GPLRC distributions influences determined. Subsequently, results compared outcomes from finite element simulations findings previously published literature. Additionally, amplitude-frequency response structure harmonic excitation analyzed, followed by discussion impact structural parameters its characteristics. indicate established theoretical model predicting distribution aligns well simulation models prior research. In contrast solid plates, not only achieves substantial reduction weight but also demonstrates significant increase frequency. Furthermore, platelets have potential enhance structure’s frequency values temperatures. Lastly, various exert notable influence performance.

Язык: Английский

Thermomechanical buckling and vibration of composite sandwich doubly curved shells with carbon nanotube‐reinforced face layers DOI
Yanchun Zhai, Shichen Li, Xiaoxue Zhang

и другие.

Polymer Composites, Год журнала: 2024, Номер unknown

Опубликована: Авг. 14, 2024

Abstract In this paper, the thermomechanical buckling and vibration analysis are investigated for carbon nanotube‐reinforced composite sandwich doubly curved shells (CNCSDS) under action of both thermal loads in‐plane compressive loads. Based on von‐Karman non‐linear kinematic relations, First Order Shear Theory, Hamilton's principle, stability equations CNCSDS deduced. For obtaining critical load frequency, an exact method is adopted. Subsequently, results validated by comparing with finding in published literature simulation results. At last, influence system parameters frequency studied displayed graphically. Meanwhile, some new about proposed first time. Highlights Thermomechanical was studied. Vibration The change rules were obtained.

Язык: Английский

Процитировано

0
Buckling Stability and Vibration Characteristics of Functionally Graded Graphene Platelet-Reinforced Composites Multi-Arc Concave Honeycomb Sandwich Panels Under Thermal Loading DOI
Wenhao Yuan, Haitao Liao, Ruxin Gao

и другие.

International Journal of Structural Stability and Dynamics, Год журнала: 2023, Номер 24(18)

Опубликована: Ноя. 3, 2023

The utilization of functionally graded graphene platelet-reinforced composites (FG-GPLRC) and honeycomb sandwich constructions is prevalent in the field engineering. Therefore, it crucial to investigate buckling vibration properties these materials under heat circumstances. This paper specifically focuses on thermal characteristics a novel multi-arc concave plate (MACHSP) equipped with an adjustable positive-negative Poisson’s ratio. governing equations motion for system are derived based first-order shear deformation theory conjunction Hamilton’s principle. formulation system’s characteristic equation involves establishment displacement functions that satisfy distinct boundary conditions. Using computational programming, natural frequencies, mode shapes, critical temperatures MACHSP three different FG-GPLRC distributions influences determined. Subsequently, results compared outcomes from finite element simulations findings previously published literature. Additionally, amplitude-frequency response structure harmonic excitation analyzed, followed by discussion impact structural parameters its characteristics. indicate established theoretical model predicting distribution aligns well simulation models prior research. In contrast solid plates, not only achieves substantial reduction weight but also demonstrates significant increase frequency. Furthermore, platelets have potential enhance structure’s frequency values temperatures. Lastly, various exert notable influence performance.

Язык: Английский

Процитировано

0