摘要
利用试验数据修正航天器结构动力模型时 ,使用缩聚方法使有限元自由度与试验自由度匹配。在总结Guyan缩聚法、改进缩聚系统法 (IRS ,ImprovedReductionSystem)和模态缩聚法的基础上 ,该文独立导出了一种基于IRS的迭代缩聚方法。算例表明 ,迭代缩聚收敛速度较慢 。
When the spacecraft structural dynamic model is updated using test data, the freedom of FEM can be matched with test freedom by means of reduction method. A new method of iterative matrix reduction based on Guyan reduction and IRS reduction is brought forward, which has low converge speed but with high analysis accuracy.
出处
《中国空间科学技术》
EI
CSCD
北大核心
2003年第2期6-10,64,共6页
Chinese Space Science and Technology
