Stroboscopic averaging methods to study autoresonance and other problems with slowly varying forcing frequencies

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:朱贝贝(北京科技大学)
:2025-07-21 16:30
:海韵园行政楼C503

报告人:朱贝贝北京科技大学

 间:202572116:30

 点:海韵园行政楼C503

内容摘要:

Autoresonance is a phenomenon of physical interest that may take place when a nonlinear oscillator is forced at a frequency that varies slowly. The stroboscopic averaging method (SAM), which provides an efficient numerical technique for the integration of highly oscillatory systems, cannot be used directly to study autoresonance due to the slow changes of the forcing frequency. We study how to modify SAM to cater for such slow variations. Numerical experiments show the computational advantages of using SAM.

人简介

朱贝贝,北京科技大学副教授,硕士生导师,博士毕业于中国科学院数学与系统科学研究院,曾于西班牙马德里卡洛斯三世大学联合培养一年,合作导师为Jesus Maria Sanz-Serna教授。多年来一直从事哈密尔顿系统的保结构算法的研究工作,相关研究成果发表于ICML, IMA J. Numer. Anal., J. Comput. Phys., Sci. China Math.等。2018年获得中国仿真学会“优秀博士学位论文”奖,2023年入选了第九届中国科协青年人才托举工程项目,曾主持中国博士后基金面上项目、国家自然科学基金青年基金项目。

 

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