CAJ | 학술논문

随着人类航天活动日益增多，空间碎片环境逐渐恶化，对航天器在轨安全运行造成严重威胁，各国学者开展了空间碎片超高速撞击数值模拟研究。目前的研究中一般采用铝弹丸代替空间碎片，但是还有部分空间碎片的密度接近冰的密度，对于冰粒的超高速撞击研究还很少且不透彻。蜂窝板是构成航天器舱壁的主要结构，对航天器内部设备起到保护作用，有必要开展冰粒超高速撞击时对蜂窝板损伤情况的相关研究工作。本文对冰粒超高速撞击蜂窝板开展数值模拟研究，研究冰粒对蜂窝板的损伤情况。研究结果表明，冰粒在一定条件下能够击穿蜂窝板，大量冰粒碎片和蜂窝板碎片将从蜂窝板背面的孔洞中高速冲出，势必对航天器内部设备造成毁伤；在冰粒动能相差不大的情况下，冰粒尺寸和蜂窝板结构将成为影响冰粒撞击效果的主要因素，直径较大的冰粒对蜂窝板的损伤程度较严重。
수착인류항천활동일익증다，공간쇄편배경축점악화，대항천기재궤안전운행조성엄중위협，각국학자개전료공간쇄편초고속당격수치모의연구。목전적연구중일반채용려탄환대체공간쇄편，단시환유부분공간쇄편적밀도접근빙적밀도，대우빙립적초고속당격연구환흔소차불투철。봉와판시구성항천기창벽적주요결구，대항천기내부설비기도보호작용，유필요개전빙립초고속당격시대봉와판손상정황적상관연구공작。본문대빙립초고속당격봉와판개전수치모의연구，연구빙립대봉와판적손상정황。연구결과표명，빙립재일정조건하능구격천봉와판，대량빙립쇄편화봉와판쇄편장종봉와판배면적공동중고속충출，세필대항천기내부설비조성훼상；재빙립동능상차불대적정황하，빙립척촌화봉와판결구장성위영향빙립당격효과적주요인소，직경교대적빙립대봉와판적손상정도교엄중。
With the orbital debris environment worsening,research on the hypervelocity im-pact phenomena of orbital debris attracts more and more interests of investigators all over the world.The density of some orbital debris is close to ice.Honeycomb sandwich panels are the im-portant component parts of spacecraft structures and protect equipments inside.Therefore,re-search on honeycomb sandwich panel under hypervelocity impact of ice particle is very imperative and necessary.In this study,we used numerical simulation method to study honeycomb sand-wich panels which are impacted by ice particles and evaluated their performance of resisting the hypervelocity impact of ice particles.The results show that ice particles can penetrate honeycomb sandwich panels.The ice particle of 1mm in diameter penetrated the honeycomb sandwich panel at the velocity of 12km/s;the ice particle of 2mm in diameter penetrated the honeycomb sand-wich panel at the velocity of 11km/s or 12km/s;the ice particle of 3mm in diameter penetrated the honeycomb sandwich panel at the velocity of 5km/s and above;the ice particle of 4mm or 5mm in diameter penetrated the honeycomb sandwich panel at the velocity of 3km/s and above. When the honeycomb sandwich panels are penetrated,a lot of debris dash out through the hole of the rare panel and will destroy equipments inside the spacecraft.Additionally,when the kinetic energy of ice particles are close,the diameters of the ice particles will affect the simulation results.