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Summary of Mechanics doctoral thesis: Equivalent inclusion approximation for effective properties of compound inclusion composites

Building approximation formulas using equivalentinclusion method to determine the effective values of the conductivity, the elastic modulus of compound-inclusion composite materials and applying numerical methods using finite elements (FE) calculated for some specific material models. | MINISTRY OF EDUCATION VIETNAM ACADEMY OF AND TRAINING SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY SCIENCE AND TECHNOLOGY ----------------------------------- NGUYEN THI HUONG GIANG EQUIVALENT-INCLUSION APPROXIMATION FOR EFFECTIVE PROPERTIES OF COMPOUND-INCLUSION COMPOSITES Major Mechanics of Solid Code 944 01 07 SUMMARY OF MECHANICS DOCTORAL THESIS HA NOI 2020 The thesis has been completed at Graduate University Science and Technology-Vietnam Academy of Science and Technology. Supervision 1. Prof. Dr. of Sci. Pham Duc Chinh 2. Assoc. Prof. Dr. Tran Bao Viet Riviewer 1 Prof. Dr. Hoang Xuan Luong Riviewer 2 Assoc. Prof. Dr. Nguyen Trung Kien Riviewer 3 Assoc. Prof. La Duc Viet Thesis is defended at Graduate University Science and Technology Vietnam Academy of Science and Technology at.on. Hardcopy of the thesis be found at - Library of Graduate University Science and Technology - Vietnam national library 1 PREFACE 1. Urgency of thesis In the producing composite materials due to the chemical reaction between the matrix phase and inclusion phase or by the coating technique of fibers to form an intermediate phase the shell surrounding the inclusion - interface which in the thesis is called materials with compound inclusion. Compound inclusion is understood as the inclusion and the shell surrounding its. This shell has mechanical - physical properties unlike the matrix or inclusion and affects the macroscopic properties of the material. Then if the upper and lower bounds method is used to determine the effective values the bounds are often far apart with little actual value. The effective medium approximation methods analyzed using a cylindrical or multi- layered spherical model are relatively complex when used for calculation engineers. Therefore the research direction in the thesis is determination of macro mechanical - physical properties of compound - inclusion composite materials using equivalent inclusion method to give simple approximation formulas. They are .