Study On Damage Characteristics Of High-speed Impact On Shield Structure Of Wrap Multi-particle Fragments In Space Temperature Environment

With the continuous exploration of space by humans,the number of orbiting spacecraft in space is increasing.The number of space debris in space is increasing.The shape and structure of space debris are various,which greatly threatens the safety of spacecraft operating in orbit.At the same time,spacecraft is affected by space environment factors when performing tasks,and the impact of space temperature environment is an important aspect.Based on the spacecraft's protection against space debris,based on the study of the single-shot high-speed impact the Whipple shielding structure in space temperature environment,the combination of experiment,numerical simulation and theoretical analysis is used to carry out multi-particle impact in space temperature environment.Research on damage characteristics of the Whipple shielding structure of aluminum plate,the main research contents are as follows:First,study on the damage characteristics of the Whipple shielding structure wrapped with multi-particle impact.The damage of the package shell after the breakdown of the front panel and the damage characteristics of the packaged small particles,the damage characteristics of the back panel,and their relationship with the material of the package shell,the impact velocity and the geometric properties of the package shell were analyzed.Secondly,for the protection performance of single-particle impact the Whipple shielding structure under different temperature environments,the single-particle impact Whipple protection structure is analyzed in high and low temperature environment,and the influence mechanism of different temperature environment on the protection performance of Whipple protection structure is analyzed.Thirdly,the protective performance of multi-particle impact the Whipple shielding structure under different temperature environments was studied.The characteristics of small particle dispersion and back plate damage under high temperature,low temperature environment and normal temperature environment were compared,and the small temperature particles were theoretically analyzed in different temperature environments.