摘要
文章提出了一种基于模态参数和加速度频响函数的综合动力学模型修正方法。该方法先是利用试验测量所得的模态数据来修正动力学模型的固有频率和振型,然后利用试验测量所得的加速度频响函数对动力学模型进行二次修正,使得修正后模型的固有频率和加速度频响函数与试验测量所得值相一致。该方法综合了模态法和频响函数法,数值算例表明,修正后结果比较理想。
This paper presents a synthesized model improvement method based on the modal parameters and frequency response functions extracted from the test data. First, the analytical model is modified using measured modal parameters. Second, the analytical model is refined by measured acceleration frequency response data, which makes the modal parameters and acceleration frequency response functions of refined model are in good accordance with those measured. The method, which combines modal parameters refinement wi...
出处
《航天器环境工程》
2004年第4期14-20,共7页
Spacecraft Environment Engineering
关键词
航天器
振动
模态
加速度
频响函数
模型修正
spacecraft
vibration
modal
acceleration
frequency response function
model refinement
