基于Ansys的光学器件热变形仿真与分析

由于环境温度的作用，光学器件在应用环境中的热变形对光学仪器的整体性能产生重要影响，利用有限元分析系统对光学器件进行热变形分析，为器件设计提供科学依据和有效支持。提出基于Ansys的热变形仿真分析方法。该方法包括问题分析、Ansys热变形仿真和数据分析3个步骤，并对每一步内容作了详细阐述和说明。以某光学仪器的关键器件为分析对象，用该方法进行了热变形仿真，应用Matlab软件进行结果数据分析，得到了器件反射镜面在40℃和-10℃环境温度影响下产生的平行差分别为7.62412″和8.56317″。所得结果与实验结果基本一致，证实了该方法的有效性。

Simulation and analysis of thermal deformation for optical elements based on Ansys

Since the thermal deformation of optical elements in the ambient temperature affects the system performance greatly,the simulation and analysis for the thermal distortion of optical elements are carried out with FEA to support the design of optical elements. A simulation and analysis method for the thermal deformation is put forward. It was implemented in following steps: problem analysis,thermal deformation simulation based on Ansys and data analysis. Each step was discribed. Taking the key elements of an optical system as the research objects,the thermal deformation simulation was performed by the method,data analysis was implemented with Matlab software. The parallelism of the two reflection mirrors is 7. 624 12″ at 40 ℃ of ambient temperature and it is 8. 563 17″ at －10 ℃. The results are basically consistent with the tested ones,and the validity of the method is verified.