Composite Homogenization, De-Homogenization, and Matrix Failure

ISBN-13: 9783836495936 / Angielski / Miękka / 2008 / 128 str.

Karen Chang Yan

Opis

This work presents a unified modelling approach for homogenization and de-homogenization, applicable to unidirectional (UD) composite systems. Emphasis is placed on the uniqueness between the forward (homogenization) and the backward (de-homogenization) modelling processes; so the desired micro fields are truly recovered within the confines of mechanics. An inter-scale failure theory that describes matrix cracking in laminates is then formulated, being based on the recovered micro-fields. Laminate matrix cracking in several well-documented experimental studies are simulated using the inter-scale theory. The simulation captures the major cracking characteristics that are otherwise excluded in failure theories derived at the homogenized composite scale.The general concept of homogenization/de-homogenization is applicable to all composite systems, where responses from micro-macro-global interactions are to be physically described. The approach taken in the formulation of the inter-scale theory serves as an example of both conceptual and practical importance.

O autorze

Karen Chang Yan,Ph.D. is Assistant Professor of the Department
of Mechanical Engineering,The College of New Jersey. She
received her Ph.D. degree in Mechanical Engineering
from Drexel University. Her research interests are in the areas
of composite materials and biomaterials.