导弹与航天运载技术
導彈與航天運載技術
도탄여항천운재기술
MISSILES AND SPACE VEHICLES
2014年
5期
66-69
,共4页
王亮%商霖%王丽华%廖选平%金晶
王亮%商霖%王麗華%廖選平%金晶
왕량%상림%왕려화%료선평%금정
振动%环境预示%有限元%虚拟试验%阻尼
振動%環境預示%有限元%虛擬試驗%阻尼
진동%배경예시%유한원%허의시험%조니
Vibration%Environment prediction%Finite element method%Virtual test%Damping
基于商用有限元软件MSC.Patran和Nastran，研究了导弹仪器安装板结构的振动环境预示技术。建立了仪器安装板的三维实体模型，单机仪器使用质点模拟，并通过MPC法与安装板连接；设置了多种阻尼特性，通过模态叠加法预示了该仪器安装板在振动条件下的结构动力学环境，通过振动试验验证了预示结果。研究发现，使用大阻尼能较好地预示该仪器安装板结构的动力学环境。
基于商用有限元軟件MSC.Patran和Nastran，研究瞭導彈儀器安裝闆結構的振動環境預示技術。建立瞭儀器安裝闆的三維實體模型，單機儀器使用質點模擬，併通過MPC法與安裝闆連接；設置瞭多種阻尼特性，通過模態疊加法預示瞭該儀器安裝闆在振動條件下的結構動力學環境，通過振動試驗驗證瞭預示結果。研究髮現，使用大阻尼能較好地預示該儀器安裝闆結構的動力學環境。
기우상용유한원연건MSC.Patran화Nastran，연구료도탄의기안장판결구적진동배경예시기술。건립료의기안장판적삼유실체모형，단궤의기사용질점모의，병통과MPC법여안장판련접；설치료다충조니특성，통과모태첩가법예시료해의기안장판재진동조건하적결구동역학배경，통과진동시험험증료예시결과。연구발현，사용대조니능교호지예시해의기안장판결구적동역학배경。
Based on the FEM software MSC.Patran and Nastran, the prediction technology of the vibration environment of missile instrument installation board is investigated. Firstly, the 3D model of the instrument board is established. Secondly, stand-alone instrument is simulated with particle and connected with installation board in MPC method. The structural dynamics environment of instrument installation board under vibration is predicted through mode superposition method with multiform damping. At last, the prediction is validated by the vibration test. According to the result, it is found that the dynamics environment of instrument installation board structure will be predicted more accurately by use of large damping.
