含弱界面的多铁性空心层合柱内径对振动行为的影响

Effect of Inner Diameter of Multi-ferric Hollow Cylinder with Weak Interface on Vibration Behavior

以含弱界面的多铁性空心层合柱为研究对象,建立了其界面的损伤耦合广义弹簧模型,通过分析其振动行为发现:当界面损伤系数及损伤耦合系数对机械振动频率影响很小时,空心层合柱的径厚比约为8。研究结果可为空心柱状多铁性智能器件的尺寸优化设计提供一定的理论依据。

A generalized linear spring model of interracial imperfection is established which is used to analyze the vibration behavior of the muhi-ferric hollow laminated cylinder.It is found that when the interface damage coefficient and damage coupling coefficient have little effect on the mechanical vibration frequency,the diameter-thickness ratio of hollow laminated cylinders is about 8.This conclusion can provide theoretical reference for the optimization design of the hollow cylindrical multi-ferric intelligent device.