Yang Jinsong

Fatigue Life Analysis in Machined Course of Primary Mirror Group of Space Camera

In the course of primary mirror face of space camera being machined,milling action runs repeatly between millstones and primary mirror,which brings about the alternately changed load in the soft support structure of primary mirror.The alternately changed load can lead to fatigue destruction of the structure.Fatigue life is analyzed by S-N method in this paper,the analyzed results show that the fatigue life of the soft support structure meets the demand.The simulated analysis of fatigue life can forebode effectively the fatigue intensity in the course of the structure being machined and used,reduce experiment times and cost,and provide theory foundation for reliability design of space camera structure.

Simulation for Random Vibration Test of Primary Mirror Component of Space Camera

As an important component of space camera,the primary mirror component must be tested sufficiently by a series of random vibration,while the simulation indication of test environment can provide reference for establishing the test condition.A simulation model was built for primary mirror component of space camera in this paper,and was solved by means of simulation analysis of random vibration.The analysis result indicated the acceleration and stress response of primary mirror component under the action of random vibration load,verified the reliability of structure design,and provided reasonable reference for dynamic environment condition in beginning stage of camera structure design.