夹持方式对频率转换KDP晶体面形的影响
Effect of clamps on surface profiles of harmonic generation KDP crystals
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摘要: 针对惯性约束聚变（ICF）系统中大口径超薄KDP晶体在不同夹持和不同姿态下的面形变化，采用有限元分析软件ANSYS，建立了大口径超薄KDP晶体在不同夹持和不同姿态下的应变模型及其边界条件的确定方法，计算了四周简支正面点力、四周固支正面压条、四周简支侧面点力、四周固支侧面压条4种夹持方式在30°和垂直姿态下大口径超薄KDP晶体的面形变化，并给出了面形变化的P-V值和RMS值。在此基础上，通过对不同夹持和不同姿态下KDP晶体面形变化的分析和比较，给出了四周固支正面压条是引起晶体面形变化相对较小的夹持方式的结论。Abstract: Considering the deformations of surface profiles of the KDP crystals with large dimension and low thickness under different clamps and departure angles from the horizontal plane in inertial confined fusion(ICF) systems, which influenced by clamps and departure angles, a finite element analysis model for the KDP crystals with large dimension and low thickness under different clamps and departure angles has been built and the boundary condition determination has been presented. For the case of departure angles from the horizontal plane of 30°and 90°, respectively, the deformations of the surface profiles under different clamps, such as full periphery simple supported and point force on the front, full periphery clamped and compliant strip on the front, full periphery simple supported and p
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