報告題目：Nonlinear Dynamics for Downhole Drilling Engineering Design

報 告 人：Marian Wiercigroch 院士

報告時間：2024年10月24日（星期四）10:00-12:00

報告地點：明志樓B504

報告人簡介：Marian Wiercigroch，英國阿伯丁大學第六世紀講席教授，是國際著名非線性動力學專家、英國愛丁堡皇家協會院士、波蘭科學院學部委員、英國工程與自然科學研究理事會成員。他擔任國際權威期刊International Journal of Mechanical Sciences主編，以及二十多本雜志編委及中國力學學報海外編委。Marian Wiercigroch教授的研究領域為理論與實驗非線性動力學，累計發表500多篇學術論文。Marian Wiercigroch教授還注重理論研究在工程中的應用，是公司iV Dynamics Ltd.的創始人兼首席技術官。

報告內容摘要：In this lecture I will paint a broad picture of the nonlinear world and examine implications of this view on science and engineering. Through carefully chosen examples from everyday life, science and engineering I will show just how nonlinear and dynamic our world really is. In the first part, I will define nonlinearity and nonlinear dynamics. Specifically I will focus on a class called non-smooth dynamical systems. Then I will show how such problems can be effectively modelled and analysed by low dimensional dynamical systems. The generic complexity of non-smooth dynamics will be demonstrated by an elastic impact oscillator – an archetypal model for the high frequency vibro-impact drilling. The second part will be devoted to what we might call Nonlinear Dynamics for Engineering Design where I will present results from my recent projects, where nonlinear dynamic interactions have been used to enhance the performance of real systems and structures. I will put a special emphasis on one large projects from energy industry, where we have developed a revolutionary downhole drilling technology tested in our unique drilling laboratories. I will argue that this would not be possible in a linear and static world!

主辦單位：

機電工程學院

石油天然氣裝備教育部重點實驗室

石油天然氣裝備技術四川省科技資源共享服務平臺

四川省深層地熱能裝備技術工程研究中心

四川省地熱能開發與利用工程技術研究中心

科學技術發展研究院

成都市機械工程學會