气动载荷对整流罩分离特性影响的仿真计算研究  

Simulation of the influence of aerodynamic load on fairing separation

作　　者：张刚[1] 刘陆广[1] 赵卓茂[1] 蔡邵佳 张建华[1] 

机构地区：[1]北京强度环境研究所,北京100076

出　　处：《航天器环境工程》2017年第3期235-240,共6页Spacecraft Environment Engineering

摘　　要：文章利用有限元软件Abaqus中的流-固耦合分析模块CEL仿真计算了整流罩平抛分离过程,对比研究了气动载荷对整流罩分离过程的影响,并与试验进行了对比。结果表明,计算与试验结果吻合较好,分离初始时刻罩内负压所产生的气动载荷严重阻碍整流罩的正常分离,造成整流罩与内部有效载荷的碰撞干涉。仿真计算可为今后整流罩地面分离试验验证提供新的途径。In this paper, the horizontal falling of the fairing is simulated by the large-scale finite element software Abaqus with its CEL module. The influences of the aerodynamic load characteristics on the fairing separation are studied. Compared with the corresponding test, it is indicated that the calculated results are in good agreement with the measured？results, and that the initial aerodynamic load because of the negative pressure seriously hinders the separation of the fairing, causing interference between the fairing and the payload. This simulation study provides a technical support for the ground test validation of future fairing separation research.

关 键 词：整流罩分离 分离试验 CEL算法 气动载荷 负压 

分 类 号：V411[航空宇航科学与技术—航空宇航推进理论与工程] O241.8[理学—计算数学]