摘要
为了研究调焦镜组件中环形胶层对系统的影响,分析了胶层的建模方法即详细模型和等效刚度模型。采用等效刚度模型对调焦镜组件进行均匀温度变化分析,把计算的面形误差和实际检测结果对比。综合考虑结构粘合剂泊松比、粘结位置、胶层宽度和胶层厚度等因素对面形误差的影响,提出改进的优化设计方案,并对调焦镜组件进行尺寸稳定性分析,同时考察粘结安装过程中可能出现的偏心现象对系统的影响。计算结果表明:对胶层使用等效刚度模型可以准确反映结构粘合剂的材料属性,优化的粘结方案不仅满足设计要求而且有效防止了偏心粘结造成的胶层分布不均匀对系统的影响。
The methods of establishing ring bonds finite＇element model-etailed model and equivalent stiffness model are elaborated in order to research the effect of systems with adhesive. Uniform changing temperature load cases are analyzed through the equivalent stiffness model, and then the results from FEA is compared to the actual tests. Some of factors which affect surface figure errors such as Poisson＇s ratio of adhesive, bonded position, bonds width, bonds thickness etc., are analyzed for optimal design. Choosing an optimal project, the dimension stability of the focusing mirror component is fully analyzed. Besides eccentricity bonds caused by inaccurate bonding process are also researched within the same model. The analysis result shows that the properties of ring bonds can be properly represented by equivalent stiffness model. The optimal design can meet the tolerance demand, and avoid the influence induced by eccentricity bonds.
出处
《光电工程》
CAS
CSCD
北大核心
2010年第10期1-5,共5页
Opto-Electronic Engineering
基金
国家863计划基金资助项目(863-2-5-1-13B)
关键词
空间光学
泽尼克多项式
结构粘合剂
等效刚度模型
消热设计
space optics
Zernike polynomials
structural adhesive
equivalent stiffness model
athermal design
