N. N. Polyakhov (1906-1987), Doctor of Engineering Science,  Professor. Honoured Scientist of the Russian Federation. He graduated from Moscow University, in 1929-1941 worked at Zhukovskii Central Aerohydrodynamic Institute under supervision of academician S.A. Chaplygin, he and V.P. Vetchinkin developed a mathematical model of marine screw propeller. In 1953-1978 he   headed the Chair of Theoretical and Applied Mechanics at the Faculty of Mathematics and Mechanics of Leningrad University. Under his supervision there was written the textbook “Theoretical Mechanics”, which was awarded the First premium of Leningrad University in 1987. N.N. Polyakhov was awarded a number of orders and medals, among them two Orders of Lenin, which was the highest decoration bestowed by the Soviet Union.M. P. Yushkov, Dr. Sci. in Physics and Mathematics, Professor. He graduated from the Faculty of Mathematics and Mechanics of Leningrad University in 1957 and completed a post-graduate course at the Chair of Theoretical and Applied Mechanics. Since 1960 till now he has been working at this Chair. In 1987 he became a Laureate of the First premium of Leningrad University, and in 2011 he was awarded the Prize of Saint Petersburg State University  “For scientific works”.  He is a co-author (and partially a responsible editor) of four monographs  on nonholonomic mechanics, one of them being translated into Chinese, and another being published in English by Springer Publishing Company. He is awarded a few medals and the Russian Federation Presidential Certificate of Honour and has got the title “Honorary Professor of Saint Petersburg State University”.S. A. Zegzhda (1935-2015), Dr. Sci. in Physics and Mathematics, Professor. He graduated from the Faculty of Mathematics and Mechanics of Leningrad University in 1958 and completed a post-graduate course at the Chair of Theoreticaland Applied Mechanics. Since 1958 till 2015  he had been working at this Chair. In 1987  he became a Laureate of the First premium of Leningrad University, and in 2011 he was awarded the Prize of Saint Petersburg State University  “For scientific works”. He is a co-author of five monographs on the theory of impact and nonholonomic mechanics, one of them being translated into Chinese, and another being published in English by Springer Publishing Company. He was honoured with the title  “Honorary Figure of Russian Higher Education”.P. E. Tovstik is one of the leading scientists at Saint Petersburg State University (SPbGU). Honoured Scientist of the Russian Federation, recipient of the Order of Honour of the Russian Federation,  Dr. Sci. in Physics and Mathematics.  Since 1978 he has headed the Chair of Theoretical and Applied Mechanics at SPbGU. Of great importance is his contribution to the development and application of asymptotic methods to the theory of thin shells. He is a Laureate of the State Prize of the Russian Federation, a Laureate of M.A. Lavrentiev Prize of the Russian Academy of Sciences, a recipient  of two first premiums of SPbGU for scientific works, an author of 10 books and over 260 papers. Among his pupils there are 9 Drs. Sci. in Physics and Mathematics and over 30 Cands.  Sci. in Physics and Mathematics.

• SECTION III. DYNAMICS.SOME APPLIED PROBLEMS OF THEORETICAL MECHANICS.- Introduction.- Stability of motion.- Nonlinear oscillations.- Dynamics and statics of a Stewart platform.- Vibrations and autobalancing of rotor  systems.- Motion control.- Nonholonomic mechanics and control theory.- Mechanics with random forces.- Physical impact theory.-  Statics and dynamics of a thin rod.- Flight dynamics.