报告题目：Nonlinear Dynamics for Engineering Design

报告嘉宾：Professor Marian Wiercigroch FRSE

主持人：沈水龙院长

报告时间：2023年4月24日10:00

报告地点：工学院会议室（行政中心213）

报告摘要：

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 [1,2]. 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 [3,5].

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 project from oil and gas industry, where we have developed a revolutionary downhole drilling technology [5] and unique drilling laboratory [6]. I will argue that this would not be possible in a linear and static world!

嘉宾简介：

Professor Marian Wiercigroch educated in Poland, US and UK holds a Sixth Century Chair in Applied Dynamics and he is a founding director of the Centre for Applied Dynamics Research at the University of Aberdeen.

His area of research is theoretical and experimental nonlinear dynamics, which he applies to various engineering problems. Wiercigroch has published extensively (over 500 journal and conference papers) and sits on a dozen editorial boards of peer review journals. He is the Editor-In-Chief of International Journal of Mechanical Sciences and a frequent keynote and plenary speaker at major international conferences.

He is the inventor of new patented drilling technology called Resonance Enhanced Drilling and the Founder and Chief Technology Officer of a spinoff company iVDynamics Ltd. He has established in Aberdeen unique experimental laboratories allowing to investigate complex nonlinear dynamic interactions in mechanical systems with the focus on energy generation.

He has received many awards and distinctions including a Senior Fulbright Scholarship (1994), Fellowship of the Royal Society of Edinburgh (2009), DSchonoris causafrom the Lodz University of Technology (2013), Distinguished Professorships at the Perm National Research Polytechnic University (2017), Balseiro Institute (2018) and Yanshan University (2021), a Scottish Champion of Knowledge Exchange (2020) and served as a panelist of the Research Excellence Framework (2014, 2021) assessing the quality of engineering research in the UK.

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工学院

2023年4月21日