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报告题目：Time-depend properties of composites on polymer base

报告人：Prof.Dumansky Alexander

        Mechanical Engineering Research Institute, Russia

时间：2018年4月12日下午15:00

地点：北京理工大学3号教学楼146会议室

个人简介：

   Dr. Dumansky is a chief of the laboratory of mechanics of composite materials at Mechanical Engineering Research Institute of the Russian academy of sciences and part time professor of Bauman Moscow State Technical University at the chair of rocket space composite structures. He received his Master of Science degree at Lomonosov Moscow State University in 1976 and PhD in Mechanical Engineering Research Institute in 1986. In 2003 he deserved the degree of Doctor of Science in Physics and Mathematics at Kazan State University. Dr. Dumansky main research interests are in mechanics of composite materials and its regularities of long time behavior. On the fundamental laws of heredity applied to polymer fiber reinforced composites elaborated methods of constructing constitutive equations, criteria of failure based on hereditary mechanics of solids and allowing taking into account loading varying in time. Research is also devoted to study of structural and technological influence on long term behavior of composite materials including stress concentration factor, size effects, and statistical regularities of composite materials. His work has been featured in VAK(the Higher Attestation Commission of the Ministry of Education and Science of the Russian Federation), RINС(The Russian Scientific Citation Index ), Scopus, Web of Science etc..

报告摘要：

This report will present the constitutive equation of polymer materials, which makes it possible to describe the mechanical behaviour of a material under different loading regimes, and the correspondence with the experimental data serves as a criterion for the correctness of the proposed approach. Regarding the defining relations of a unidirectional layer and a layered composite material with different layer packing, the task is significantly complicated and for its solution it is required to use a mathematical analysis apparatus including the use of matrix algorithms, the theory of integral equations involving the algebra of resolvent operators, and the theory of generalized functions. The use of a developed mathematical apparatus makes it possible to establish a relationship between the mechanical properties of composites on a polymer basis under various loading conditions. The development of such approaches makes it possible to calculate and predict the temporal properties of composites, and also take into account the influence of the characteristics of the polymer binder and its adhesion to the reinforcing material on the mechanical behaviour in the complex stress state.