Multiscale simulator for new contact-friction theory

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360044
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: The University of Tokyo
• Principal Investigator: IZUMI Satoshi 東京大学, 工学(系)研究科(研究院), 教授 (30322069)
• Co-Investigator(Kenkyū-buntansha): SAKAI Shinsuke 東京大学, 大学院工学系研究科, 教授 (80134469) ; TANAKA Hiro 東京大学, 大学院工学系研究科, 助教 (70550143)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: マルチスケール解析 / 摩擦 / 凝着 / 樹脂

Outline of Final Research Achievements

Friction between solids is known as a complicated phenomenon including multi-scale roughness (multi-asperity). In this study, the scale of roughness is decomposed to three region, macro-mezo-nano. Multi-scale simulator to integrate each scale modellings has been developed. For macro-scale undulation, explicit contact-friction finite element method is applied. For mezo-scale fractal roughness, the Persson model is newly modified. For nano-scale, molecular dynamics simulation is applied. Finally, we have tried to connect each scale effectively.

Free Research Field

機械材料