报告题目：Advances in Non-smooth Dynamics: Theory and Applications
报告人：Prof. Marian Wiercigroch（英国阿伯丁大学）
报告时间：2024年12月4日9:00
报告地点：明故宫校区18号楼529报告厅
主办单位：国际合作处 必威西汉姆官网平台
报告内容简介：
Non-smooth dynamics is the most vibrant area of nonlinear dynamics where new fundamental and applied advances are being made. In this lecture I will introduce the recent advances in the field of nonlinear dynamics with a special focus on non-smooth dynamical systems，which is the newest and vastly developing area with new phenomena such as grazing induced bifurcations and a broad range of applications in science and engineering.
In the first part, I will review major advances in non-smooth dynamics over the last three decades with emergence of grazing and grazing induced bifurcations. I will define the fundamental concepts in nonlinear dynamics with their techniques and I will focus on a class so-called non-smooth dynamical systems. Then I will show how such problems can be effectively modelled and analysed by low dimensional but calibrated dynamical systems. The generic complexity of non-smooth dynamics will be demonstrated by an elastic impact oscillator – an archetypal model for modelling of 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 without calibrated low dimensional models.
报告人简介：
Prof. Marian Wiercigroch is a Founding Director of the Centre for Applied Dynamics Research (CADR) and holds a prestigious Sixth Century Chair in Applied Dynamics at University of Aberdeen . He is Fellow of the Royal Society of Edinburgh, Fellow of the Institution of Mechanical Engineers, Fellow of the Institute of Mathematics and Its Applications. Moreover, he has been the Chief editor of the renowned International Journal of Mechanical Sciences since 2013.
Prof. Wiercigroch’s area of research is theoretical and experimental nonlinear dynamics, which he applies to various engineering problems, such as Oil & Gas drilling, rotor systems, fatigue and vibration isolation, renewable energy harvesting, etc. He has extensive track record of innovation in drilling technology and he is the author of over 350 journal and conference papers and 9 international patents.
