Energy Transfer Analysis of Acoustic Vibration Response of Cabin Structure
The work aims to analyze the contribution of input energy from various parts of spacecraft structure to vibration.The energy transfer path analysis method was introduced into an acoustic vibration response analysis.After obtaining the vibra-tion response of the structure,the energy distribution and input energy of each part of the structure were further obtained,and the contribution of the input energy of each part was calculated.For the cabin structure in this paper,the energy of panels in-stalling the instrument bracket was mainly contributed by external noise excitation,and the skin structure connected to it also had input energy,but the contribution was not significant,accounting for about 10%.The energy at the bottom of the instrument bracket was mainly contributed by the skin at the installation position,with adjacent skin contributing about 20%of the energy.The energy of structure installing the instrument equipment was mainly contributed by the instrument bracket.In conclusion,the energy transfer analysis method for acoustic and vibration response of cabin structures can provide support for the analysis of transmission paths,structural optimization design,and vibration and noise reduction design of structures.
acoustic vibration environmentenergy transferenergy distributioncontribution analysisstatistical energy methodcabin structure
NETL
NSTL
万方数据
