CAJ | 학술논문

薄膜反射镜是实现大口径、低面密度空间光学系统的最新方向之一,材料采用柔性薄膜,具有重量超轻、体积小的特点.由于薄膜反射镜的挠度特性,利用传统的方法来获得面形的变化很困难.介绍薄膜反射镜的成形原理,建立符合实际情况的有限元模型,通过施加一定的边界条件,对薄膜反射镜进行非线性分析,得到一系列的挠度值,并和理论值进行比较分析,最大误差为0.07%.所得到的结论对于进一步研究反射镜成形和面形控制,以及薄膜厚度的选择具有一定的指导意义.＃
박막반사경시실현대구경、저면밀도공간광학계통적최신방향지일,재료채용유성박막,구유중량초경、체적소적특점.유우박막반사경적뇨도특성,이용전통적방법래획득면형적변화흔곤난.개소박막반사경적성형원리,건립부합실제정황적유한원모형,통과시가일정적변계조건,대박막반사경진행비선성분석,득도일계렬적뇨도치,병화이론치진행비교분석,최대오차위0.07%.소득도적결론대우진일보연구반사경성형화면형공제,이급박막후도적선택구유일정적지도의의.＃
The membrane mirror is one of the most novel technologies of the large aperture,low surface density space optical system in future.The membrane mirror adopt flexible membraneous material to make epi-mirrors,which are small,ultra-light-weight.It is difficult to analyze the transformation of the surface using traditional historical methods because of the bending characters of the membrane mirror.Introduce the forming principle of the membrane mirror,create finite element model compared to the actual membrane.Under certain boundary conditions,get a series of deflection value through the analysis of the non-linear finite element.Compared with the theoretical variable,the maximum error is 0.07%.The result has prevalent meaning of guidance for the further study on deformation,surface controlling of membrane mirrors and the choice of the membraneous'thickness.