CAJ | 학술논문

振型斜率一直是姿态控制系统关心的首要问题。通过等效梁模型结合局部三维有限元精细模型的混合建模的方法，研究了结构局部刚度变化对惯性部件安装位置振型斜率的影响。基于模态分析，在多种工况下提取了振型与惯性部件的振型斜率并进行对比研究，讨论了舱体开口加强圈梁刚度变化、载体十字梁截面变化、连接固定支座刚度变化以及壳体壁厚变化对振型斜率的影响，为航天运载器结构动力学模型简化与姿态控制系统相关结构设计提供了参考依据。
진형사솔일직시자태공제계통관심적수요문제。통과등효량모형결합국부삼유유한원정세모형적혼합건모적방법，연구료결구국부강도변화대관성부건안장위치진형사솔적영향。기우모태분석，재다충공황하제취료진형여관성부건적진형사솔병진행대비연구，토론료창체개구가강권량강도변화、재체십자량절면변화、련접고정지좌강도변화이급각체벽후변화대진형사솔적영향，위항천운재기결구동역학모형간화여자태공제계통상관결구설계제공료삼고의거。
Vibration mode Attitude Control System for mode shape slope has been a primary issue of con-cern. In this paper, we propose a hybrid modeling method of combination equivalent beam with three-dimensional finite element. This approach exposits a conclusion, where local stiffness of structure have effects on mode shape slope of Inertial components installation location. Based on modal analysis in multiple conditions,the stiffness of opening cabin reinforcing beam,section geometry parameter of cross beam,stiffness of fixed support and shell thickness which are discussed the effects on mode shape and mode shape slope of Attitude Control System. The conclusion of this article may be bentfit to simplification of dynamic models and design of Attitude Control System.