Stucture Design And Simulation Of Large Back Supporting Reflected Mirror

This thesis mainly introduces the design and analysis of reflector support structureaccording to the static and dynamic performance. Choose the back support, optimize thenumber of points and the location, establish the frame structure model, then the mirrorsurface shape and dynamic performance were analyzed, The parameters of the flexiblestructure were obtained. In this paper, specific research contents include the followingrespects:Firstly, the research background and significance of inertial confinement fusionwere introduced, the research status of reflector support structure at home and abroadwere analyzed, then the paper content was introduced.Secondly, the point position was optimized with the ANSYS, comparing the size ofthe mirror surface shape accuracy, and the number of points was confirmed. Thestructure of reflector supporting was designed, the stiffness of flexible supportingstructure was calculated.Thirdly, the finite element model of the supporting structure was established and thestatic performance were analyzed in the environment of general finite element softwareANSYS: calculating the P-V and RMS of mirror in the different flexible structure,analyzing the distortion and stress of the supporting structure by gravity and figuringout the max value.Then, the dynamic performance of the supporting structure were analyzed in thesoftware ANSYS. Figuring out the first ten order natural frequencies and main vibrationmodes. Considering the static and dynamic index, the final parameters of flexiblestructure were determined.Finally, the thermal analysis of the mirror were carried out in the environment ofthe general finite element software ANSYS: including the effects of the axialtemperature gradient and the steady state temperature on the mirror surface, and themaximum axial temperature gradient was confirmed.