导弹与航天运载技术
導彈與航天運載技術
도탄여항천운재기술
MISSILES AND SPACE VEHICLES
2013年
2期
13-15
,共3页
王亮%商霖%牛智玲%李炳蔚
王亮%商霖%牛智玲%李炳蔚
왕량%상림%우지령%리병위
振动%噪声%振动环境预示%有限元法
振動%譟聲%振動環境預示%有限元法
진동%조성%진동배경예시%유한원법
Vibration%Noise%Vibration environment prediction%Finite element method
基于商用有限元软件 MSC.Patran 和 Nastran,研究某型导弹的仪器舱结构的噪声环境动力学预示.首先建立仪器舱的三维壳单元模型;根据弹道数据理论,研究导弹在飞行过程中遭受噪声的总声压级,给出噪声声压级谱,并转换为压力功率谱密度函数;最后预示了该仪器舱在压力功率谱的作用下的动力学环境.
基于商用有限元軟件 MSC.Patran 和 Nastran,研究某型導彈的儀器艙結構的譟聲環境動力學預示.首先建立儀器艙的三維殼單元模型;根據彈道數據理論,研究導彈在飛行過程中遭受譟聲的總聲壓級,給齣譟聲聲壓級譜,併轉換為壓力功率譜密度函數;最後預示瞭該儀器艙在壓力功率譜的作用下的動力學環境.
기우상용유한원연건 MSC.Patran 화 Nastran,연구모형도탄적의기창결구적조성배경동역학예시.수선건립의기창적삼유각단원모형;근거탄도수거이론,연구도탄재비행과정중조수조성적총성압급,급출조성성압급보,병전환위압력공솔보밀도함수;최후예시료해의기창재압력공솔보적작용하적동역학배경.
Based on the FEM software MSC.Patran and Nastran, the prediction of the noise environment dynamics of the missile instrument bay is investigated. Firstly, the 3-D shell model of the instrument bay is established. Secondly, the sound press lever (SPL) of the missile during flight is studied based on trajectory data. And the Spectrum of SPL is presented, which is transferred to power spectral density function of pressure. At last, the dynamic environment of missile instrument bay is predicted.
