1 September 2006 Finite element analysis on the assembly of circular wedge prism
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The paper comprehensively analyzes and evaluates the mechanical property and thermo-structure distortions of the assembly of circular wedge prism in the device by method of finite element analysis. Regarding the prism assembly as a finite element model, the optical-mechanical-thermal integrating analysis is done. In terms of the principle of structure statics, the structure design and intensity of the prism assembly is verified and checked, and the analysis of surface deformation of the prism is correspondingly provided under static loading; then the thermal elasticity distortions of the prism are analyzed and the estimation of optics performance of the circular wedge prism is given. The analysis results show: the maximal distortion of the prism assembly is 10nm magnitude and the maximal stress is 0.403Mpa, which has much tolerance to the admissible stress of material and the precision requirement of structure; By comparing thermal-structure coupling analysis with statics analysis, the influence of heat effect on the prism surface deformations is proved far greater than the influence of static loading, so the strict temperature-controlled measures must be taken when the device is used.
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Anhu Li, Anhu Li, Jianfeng Sun, Jianfeng Sun, Yongjian Zhu, Yongjian Zhu, Liren Liu, Liren Liu, } "Finite element analysis on the assembly of circular wedge prism", Proc. SPIE 6304, Free-Space Laser Communications VI, 63041S (1 September 2006); doi: 10.1117/12.678264; https://doi.org/10.1117/12.678264


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