Study On Vibration Characteristics Of Carbon Nanotube Reinforced Composites Based On Regional Energy Method

With the progress of technology,composite materials have a wide range of applications in marine engineering,aerospace,petrochemical industry,civil construction and other engineering fields.Carbon nanotubes(CNTs)are used in the preparation of composites because of their excellent mechanical properties.As a new type of composite,carbon nanotube reinforced composites(CNTRC)has attracted more and more attention.At present,the research on the mechanical properties of CNTs composites mainly focuses on the vibration of a single structure.Therefore,in view of this situation,it is of great significance to establish a complete set of structural mechanical model of CNTs composites and study the relevant material parameters.Based on the vibration characteristics of typical geometric structures in engineering,the following research work is carried out in this paper:Firstly,the stress-strain relationship of plate and shell structure is obtained through the analysis of elastic physical properties;On this basis,the mechanical model of CNTs composite structure with arbitrary curved shell is established based on the regional energy analysis method,and the solution process of the whole solution method is discussed in detail with the curved beam as an example.Based on the above work,the corresponding mechanical analysis models for CNTs composite plate structure and rotating shell structure are established,the effectiveness of the model is verified,and the effects of different material parameters on structural vibration characteristics are studied.By comparing with the published literature data,the effectiveness of the mechanical model is proved.The parametric study further clarifies the influence of different material parameters on structural vibration characteristics.At the same time,it provides reference data for the preparation of CNTs composites.