报告题目：Adventures with PFC: Past, Present, and Future (1994 – 2026 and beyond)
报 告 人： David Potyondy 教授
报告时间：4月23日 09:00-12:00
报告地点：明辨楼A312
报告人简介：
Dr. Potyondy completed his PhD in Civil Engineering at Cornell University in 1993 and since that time has been employed by ITASCA, except for a two-year period from 2004-2005 as an Assistant Professor at the University of Toronto. Mathematical modeling of physical phenomena is the driving passion for his research and development work. He has developed and applied both continuum and discontinuum models to represent damage and flow processes on both a macro- and micro-scale. His primary research focus is micromechanical modeling using discrete-element methods in which a solid is represented as a bonded collection of discrete particles. He developed the bonded-particle modeling methodology along with Peter Cundall and continues to develop this methodology. The modeling methodology is embodied in the Particle Flow Code (PFC) and has been widely used. He has authored 67 technical papers, 57 reports, directed development of the PFC codes, given more than 46 PFC training courses that focus on microstructural modeling of rock fracture, developed the structural-element logic in the FLAC3D code, and developed novel techniques for applying micro-mechanical discontinuum models to fracture-related boundary-value problems that are not limited to rock-mechanics applications (interesting examples of which are shaving of human hair and grinding of wheat into flour).
报告内容摘要：
We will take a wonderful trip through the past as Dave Potyondy recounts the many interesting things that he has modeled with PFC over the years, which include: shaving, hay baling, ice-structure interaction, water molecules (via molecular dynamics, it is the same as DEM except that the particles are atoms instead of sand grains --- we can make PFC dance in this way), carbon nanotubes, geogrid in roadway ballast, rock cutting, flour milling, and of course, bondedparticle modeling (borehole breakout, spalling, sand production in oilwell boreholes, effect of cavities on deformability and strength of lithophysal tuff (for Yucca Mountain project), and who knows what else . . .
主办单位：地球科学与技术学院
科学技术发展研究院
