16/10/2014 · Sigma bond metathesis ..
From 1972-till now he has been working at the Institute of Continuous Media Mechanics of the Ural Branch of the Russian Academy of Sciences, from 1983 as Head of the Laboratory of Modeling of Thermomechanical Processes in Solids (at present – the Department of Related problems in mechanics of deformable solids). In 1993 he became Director of the Institute, a position he still holds today. He is Chairman of the Perm Scientific Center of the Ural Branch of the Russian Academy of Sciences since 2000, and Vice-chairman of the Ural Branch of the Russian Academy of Sciences since 2008. He is also Head of the Department of Continuum Mechanics of the Perm State University (from1999-till now).
1997 he becam the corresponding member of RAS and year 2003 he was elected to become the full member of RAS and as Fellow Member of the European Academy of Sciences, 2010. Valeriy Matveenko is an author of more than 300 scientific works, including four monographs.
Solid Mechanics, Mechanics of materials, Vibrations and stability, Engineering application of solid mechanics, Continuum mechanics, Numerical methods in solid mechanics, Electroviscoelasticity and its applications to smart-materials, Asymmetric elasticity theory, Aeroelasticity, Thermomechanics of polymer materials in conditions of relaxation and phase transitions.
The finite element method has been extended to include the algorithms for numerical simulation of elastic bodies made of incompressible or weakly compressible materials. New methods for constructing singular solutions of two- and three-dimensional problems of the elasticity theory have been proposed. The obtained solutions have been used to gain new numerical data on the character of stress singularity at the vertices of different types of conical bodies and polyhedral wedges and also at the points of a spatial crack tip where its smoothness is broken. For different types of singular points, a new family of two- and three-dimensional singular elements has been constructed and mathematically substantiated. The problems of optimization of elastic body geometry in the vicinity of singular points have been formulated and solved. The analysis of the obtained solution has shown that the optimal surfaces have common properties. The algorithms for solving elastic problems for bodies with singular points are used to refine the test methods for adhesion strength and adhesive bond strength.
New analytical solutions of two-dimensional static and dynamic problems of the asymmetric elasticity theory have been obtained. A finite-element algorithm has been constructed to solve two-and three-dimensional static and dynamic problems of the asymmetric theory of elasticity. The solutions obtained in the framework of the asymmetric elasticity theory have been compared with the solutions of classical theory of elasticity. The results of the comparative analysis have been used to design the schemes of experiments, which would be most effective in revealing the couple stress effects of the material behavior.
Methods for solving multi-operator problems of linear viscoelasticity have been elaborated and substantiated mathematically. These methods allowed us find the effect of possible non-monotonic stress variation in piece-wise homogeneous viscoelastic bodies under constant or monotonically changing external loads.
A new mechanical problem on natural vibrations of viscoelastic bodies has been proposed as an effective tool for finding optimal dynamic characteristics of viscoelastic structures. New models have been proposed to describe thermomechanical behavior pf polymers and polymer-based composites taking into account the processes of their polymerization, crystallization and glass transition. The experimental methods have been developed to identify the model parameters, and numerical algorithms have been constructed to solve the corresponding boundary value problems. The problems on natural and forced vibrations of piece-wise homogeneous electroviscoelastic bodies with passive and active external electric circuits including the resistance, capacitance and inductance elements have been stated. Practical applications of these problems to the case of finding optimal dynamic characteristics of the structures made of smart-materials on the basis of piezo elements have been considered.
An algorithm for solving the stability problem of single- or multilayer cylindrical and conical shells subjected to external or internal fluid or gas flows has been developed. A numerical algorithm has been constructed to solve the stability problem of a rapidly rotating deformable body. Computational methods have been developed to solve the inverse problems dealing with identification of elastic and viscoelastic properties of a material based on the data of natural tests. Recently, a series of investigations have been made in the field of design if intellectual systems for monitoring the mechanical state of technical objects and constructions.
Valeriy Matveenko is: Member of the Presidium of the Russian National Committee on Theoretical and Applied Mechanics; Member of the Scientific Councils on Solid Mechanics and Mechanics of Composite Materials and Structures of the Russian Academy of Sciences; Member of the Presidium of the Russian Academy of Sciences; Member of the Presidium of the Ural Scientific Center of the Russian Academy of Sciences; Member of the Supervisory Council of the Perm State Technical University; Chairman of the Expert Commission on Mathematics and Mechanics of the Council on Grants of the President of the Russian Federation for State Support of Young Scientists and Leading Scientific Schools of the Russian Federation; Editor in Chief of the journal «Computational Continuum Mechanics»; Member of the Editorial Boards of several international and Russian scientific journals.
The State Prize in science and engineering (1999), The Medal for Labor Merits (1986), The Order of Honour (1999), The Order for Services to Motherland” 4th rank (2008), The mark of distinction “The Gold Emblem of Perm region” (2005).