the Team

Professor Liu Caishan’s Multibody Dynamics Research Team has long been engaged in research on the dynamics and control of multibody systems. They have achieved significant results in the theoretical study of low-speed collision dynamics, friction dynamics, dynamics of incomplete systems, particle rheology, and aerospace engineering applications. The gap model they proposed is known as the “Liu-Model,” and their method for solving multipoint collision dynamics is referred to as the “LZB” method. The team systematically resolved the “Painlevé Paradox” in classical rigid body dynamics. They proposed a viscous mechanism for rolling friction resistance. Through both experimental and theoretical approaches, they addressed the challenging Painlevé problem in rigid body dynamics. They introduced a variable-structure dynamics analysis framework and associated algorithms that account for friction effects. They formulated Archimedes’ principle for granular flows and established a geometric mechanics analysis framework for the dynamics of incompletely constrained systems.

In recent years, Professor Liu Caishan’s multibody dynamics research team has made a series of significant contributions to major aerospace projects, including fault-to-zero analysis for the Long March 5 rocket and lunar soil drilling and sampling for the Chang’e 5 mission. Peking University News Report.

1. The Long March 5 Launch Vehicle Model Office sent a letter of appreciation to Peking University’s School of Engineering:
   https://news.pku.edu.cn/xwzh/829e872b71f34a1c8cb01c97a476e63c.htm
2. Beijing Satellite Manufacturing Co., Ltd. writes to Peking University’s School of Engineering, thanking Liu Caishan’s team for their significant contributions to completing the lunar soil drilling and collection mission for Chang’e-5
   https://news.pku.edu.cn/xwzh/ca4429d9f8004a82b7c682865b1f87d1.htm