摘要
通过把声子晶体中的局域共振特性应用到梁上形成一种局域共振梁,在局域共振周期梁的基础上,引入晶格参数失谐,提出一种新型的局域共振失谐梁.对失谐梁和周期梁分别进行正弦激励响应和频率响应分析,并改进能量法,可得出结论:通过选择合适的失谐参数,可使失谐梁较传统周期梁具有更好的减振特性.
The characteristic of phononic crystals local resonance was applied to beam to form a local resonat beam.Based on local resonant beam,and by introducing analogy lattice parameter mismatch,a local resonance model of detuning beam was obtained.Through sine excitation response analysis and frequency response analysis of local resonance periodic beam and detuning beam respectively,and combined with the improved energy method,it can be concluded that,by choosing the appropriate detuning parameters,detuning beam is better than periodic beam in the characteristics of vibration reduction.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2015年第2期55-59,共5页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金联合基金资助项目(U1234208)
西南交通大学牵引动力国家重点实验室开发课题资助(TPL1310)
关键词
失谐梁
正弦激励响应分析
频率响应分析
能量法
detuning beam
sine excitation response analysis
frequency response analysis
energy method
