讲座题目：Multi-scale Modeling of Fiber-reinforced Plastic Composites

讲座时间：2018年11月17日上午10:00-11:30
讲座地点：理科楼205会议室
主讲人：Tomonaga OKABE，Professor, Department of Aerospace Engineering, Tohoku University, Sendai, Japan，and Affiliate Professor, Department of Materials Science and Engineering, University of Washington, BOX 352120, Seattle, WA 98195, U.S.A.
讲座摘要：Composite materials are gaining wide applications in aircraft, spacecraft, automotive and energy generation. However, their analysis still presents challenges due to the multiple scales from micro-level to the structural. For example, for analyzing the deformation of a composite structure, it should be regarded as an anisotropic body at a macroscopic scale. However, to analyze its failure or damage, one must use microscopic analysis with the representative volume elements (RVEs) considering micro cracks in the matrix and/or at fiber/matrix interfaces. Furthermore, for fabrication and processing, the molecular scale at which fiber and resin react also must be considered (i.e., atomistic modeling). This presentation will introduce an approach to multi-scale modeling of a fiber-reinforced composite considering bridging of scales. The approach is not always tightly connected in a scheme, and each scale is independently modeled. However, the results from a series of models give us a concise view of how to connect those scales and to use the composites wisely. The presentation will discuss (1) Numerical method for failure simulation of unidirectional fiber-reinforced composites with spring-element model; (2) Numerical modeling of progressive damage in fiber-reinforced plastic cross-ply laminates; (3) Micromechanics of the Rate-Dependent Fracture of Discontinuous Fiber-Reinforced Plastics; (4) Periodic unit-cell simulation of transverse tensile failure in unidirectional car-bon-fiber-reinforced composites; (5) Atomistic simulation of the curing reaction of Epoxy resin.
主讲人简介：Dr. Tomonaga Okabe is currently Professor in Department of Aerospace Engineering and Vice Director of the UW-TU AOS, Tohoku University. He is also an affiliate professor in Department of Materials Science and Engineering, University of Washington. He has previously served as director of the center for next generation aircraft at Tohoku University. In 2007 he was Visiting Associate Professor at Brown University. He has B.S., M.E. and Dr. Eng. degrees in Mechanical Engineering from Keio University in Japan. His interests are in many areas of composite materials including process modeling, micromechanics and failure analysis, as well as nanocomposites.

主办单位：重庆大学工程学部

承办单位：重庆大学航空航天学院

欢迎各单位师生参加，并针对有关问题现场提问。