Creating Stones in Computers

Date: 2023/11/15 - 2023/11/15

Academic Seminar: Creating Stones in Computers

Speaker: Chun Liu, Associate Professor, School of Earth Sciences and Engineering, Nanjing University

Time: 10:00 - 11:30, November 15, 2023 (Beijing Time)

Location: CIMC Auditorium (Room 300), JI Long Bin Building


Particles are widespread in the physical-world, ranging from tiny powders, fine sands, to grains and rocks. The contact and interaction of a large number of particles can produce a dynamic system exhibiting very complicated overall behavior. The discrete element method has proved to provide a powerful tool to study granular materials in various fields, such as geological hazards, geotechnique, chemical processing, agriculture, and manufacturing. Based on an innovative matrix reformulation of the conventional discrete element method, Dr. Chun Liu has developed a high-performing discrete element software, MatDEM, which can effectively model millions of particles on a desktop computer. The particles can be carefully cemented to create various stones, with which one may build up a physical-world model in a computer. In this talk, the model is used to generate data for AI training, and it is applied to simulate battery manufacturing process, geotechnical processes on the moon, etc.


Chun Liu, a Professor at Nanjing University. He graduated from Nanjing University in 2012 and won the Jiangsu Province Excellent Doctoral Thesis Award. After the postdoctoral research at Stanford University, he joined Nanjing University in 2014. His research interest lies on the discrete element method, software development, and engineering applications. He hosted or participated in 10 National Natural Science Foundation projects, including the National Excellent Youth Science Foundation Project. He has about 100 academic papers published, with over 1700 citations. He applied for and obtained over 20 national invention patents, 2 PCT international patents. Since 2011, He independently developed the high-performance discrete element software MatDEM, which received the "China Digital Simulation Independent Software Innovation Award", and the Silver Award at the Geneva International Invention Exhibition. He won the First Prize of the Natural Science Award of the Ministry of Education and "Qian Qihu Award" in 2022, and the Jiangsu Patent Silver Award in 2023. Currently serving as the Deputy Secretary General the Chinese Society of Rock Mechanics and Engineering, an editorial board member of the Journal of Rock Mechanics and Engineering, etc.