Research On Hypervelocity Impact Performance Of Shielding Stucture Stuffed With Basalt And Kevlar Fiber

With the development of Aeronautics, space debris have explosive growth, it hasbecome the greatest threat to the safe operation of spacecraft. Therefore, research on thespacecraft protection structure has become the main problem of the space powersincluding China facing. Our essay use the spacecraft protection structure as theengineering application background, with domestic continuous basalt fiber as the mainresearch object, using the method of hypervelocity impact simulation test and numericalsimulation combined, doing systematic research on the preventing effect of theprotective properties of the filling materials and fiber front of stuffed Whipple shield.The main research works include:First of all, to study the effects of filling material to fill the protective properties ofstuffed Whipple shield. The results show that, CBF/Kevlar stuffed Whipple shield (B)protective performance is better than that of the CBF stuffed Whipple shield (A).Secondly, to study the effects of lead on the protective properties of fiber filled withprotective structure. The results show that, in front of CBF stuffed Whipple shield (C)of the protective properties of CBF/Kevlar stuffed Whipple shield (B) overall rather,than the other three kinds of protective structure scheme.Finally, cylindrical projectiles using different diameter spherical projectile anddifferent ratio of length to diameter, at different speeds on CBF/Kevlar continuousbasalt fiber were analyzed for hypervelocity impact simulation. The results show that, atthe same speed, the damage to the structure the ratio of length to diameter larger thanthe cylindrical projectile1are more serious than spherical projectile equal weight; Inthe low speed interval, long cylindrical projectile diameter ratio of less than1, thestructure damage caused by spherical projectile are lighter than the same weight, whilein the high speed interval on structure damage than the same weight of serious sphericalprojectile. For the cylindrical projectiles at the same speed, low speed interval,structural damage and increase with the increase of ratio of length to diameter; At thesame speed interval, the ratio of length to diameter is greater than1, damage increasedwith increasing of the ratio of length to diameter increases, the ratio of length todiameter is less than1, the structural damage increased with increasing of the ratio oflength to diameter decreases.