Nonlinear Dynamics for Downhole Drilling Engineering Design

报告题目：Nonlinear Dynamics for Downhole Drilling Engineering Design

报 告 人：Marian Wiercigroch 院士

报告时间：2024年10月24日（星期四）10:00-12:00

报告地点：明志楼B504

报告人简介：Marian Wiercigroch，英国阿伯丁大学第六世纪讲席教授，是国际著名非线性动力学专家、英国爱丁堡皇家协会院士、波兰科学院学部委员、英国工程与自然科学研究理事会成员。他担任国际权威期刊International Journal of Mechanical Sciences主编，以及二十多本杂志编委及中国力学学报海外编委。Marian Wiercigroch教授的研究领域为理论与实验非线性动力学，累计发表500多篇学术论文。Marian Wiercigroch教授还注重理论研究在工程中的应用，是公司iV Dynamics Ltd.的创始人兼首席技术官。

报告内容摘要：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!

主办单位：

机电工程学院

石油天然气装备教育部重点实验室

石油天然气装备技术四川省科技资源共享服务平台

四川省深层地热能装备技术工程研究中心

四川省地热能开发与利用工程技术研究中心

科学技术发展研究院

成都市机械工程学会