기계공학부 구성원들의 많은 관심과 참여 부탁드립니다.

▣ 주   제: Study on the frictional interface interaction based on molecular dynamics simulation

▣ 연   사: Gai Zhao 교수

▣ 소   속: Nanjing University of Aeronautics and Astronautics

▣ 일   시: 2024. 11. 12.(화) 10:30

▣ 장   소: 제4공학관 D402호

▣ 초   청: 김대은 교수

▣ 초   록

  To elucidate the interactions between friction pairs at the atomic scale, molecular dynamics simulations were employed to establish a tribological model between polymer nanocomposites and copper metal. By investigating the frictional wear performance of this system under various conditions including vacuum, high/low temperatures, different humidities, velocities, and loads, the dynamic changes of each atom during the friction process were visually observed. Analysis of changes in relative atomic concentrations, velocities, temperatures, and system energies allowed for the elucidation of the interaction mechanisms between the polymer matrix and nano-modifiers with the counterpart under different environments. Furthermore, by calculating the interaction energies between different materials, the influence mechanisms of material properties, external environments, and application conditions on friction and wear performance were revealed. This provides a theoretical basis for understanding the interactions between friction pairs at the atomic scale.