强度与环境
彊度與環境
강도여배경
STRUCTURE & ENVIRONMENT ENGINEERING
2014年
6期
11-15
,共5页
金晶%商霖%周晓丽%王亮
金晶%商霖%週曉麗%王亮
금정%상림%주효려%왕량
分支结构%动特性分析%有限元
分支結構%動特性分析%有限元
분지결구%동특성분석%유한원
structures with branches%dynamic analysis%finite element method
研究了分支结构动力学建模对全弹模态的影响,分别建立了单梁和分支梁有限元模型,通过数值计算与试验结果对比分析发现,考虑分支结构对全弹刚度的影响时,能有效的提高模态预示精度。以分支梁模型为标准,建立了共用结点、MPC多点约束和Spring三种分支梁连接模型,基于Spring连接模型,分析了不同连接刚度对飞行器结构模态的影响。
研究瞭分支結構動力學建模對全彈模態的影響,分彆建立瞭單樑和分支樑有限元模型,通過數值計算與試驗結果對比分析髮現,攷慮分支結構對全彈剛度的影響時,能有效的提高模態預示精度。以分支樑模型為標準,建立瞭共用結點、MPC多點約束和Spring三種分支樑連接模型,基于Spring連接模型,分析瞭不同連接剛度對飛行器結構模態的影響。
연구료분지결구동역학건모대전탄모태적영향,분별건립료단량화분지량유한원모형,통과수치계산여시험결과대비분석발현,고필분지결구대전탄강도적영향시,능유효적제고모태예시정도。이분지량모형위표준,건립료공용결점、MPC다점약속화Spring삼충분지량련접모형,기우Spring련접모형,분석료불동련접강도대비행기결구모태적영향。
The influence of the models on the spacecraft’s modes with branches was investigated, the dynamic analyses of beam model and beam model with branches were performed, compared with the test result, it was found that the more precise can be got by beam model with branches. Three different finite element models of spacecraft with branches were established, including: the common nodes、MPC and Spring, based on the spring model, the influence of different spring stiffness for the modes of the spacecraft was analyzed.