137 IL'YUSHIN 



Residence: 1-aya Cheremushkinskaya 4/34 



Moscow, USSR 

 Telephone: B7 51 77 



IL^YUSHIN, ALEKSEI ANTQNOVICH (Mechanical Eng:ineer) 



A. A. H'yushin was born January 20, 1911. In 1934 he gradu- 

 ated from Moscow University and became a professor there in 

 1938. In 1943, he became Chief of the Department of Strength 

 of Materials of the U.S.S.R. Academy of Sciences Institute of 

 Mechanics of which he became Director in 1953. He has been 

 a member of the Communist Party of the Soviet Union since 

 1940. He was elected, in 1943, a Corresponding Member of the 

 U.S.S.R. Academy of Sciences. In 1948 he was awarded a Stalin 

 Prize. 



Il'yushin has worked in the theory of elasticity and plasticity. 

 In 1936-38 he obtained important results in the area of viscous- 

 plastic flow and its stability for metals. In 1937 he designed a 

 pile-driver for testing materials and construction models at 

 high speeds of deformation. In 1942-48 he formulated a theory 

 on small, elastic -plastic deformations which appear as the 

 basis for calculating structures which work beyond the limits 

 of elasticity. He also proposed a method for solving these 

 problems. He developed a theory on the stability of plates, and 

 shells beyond the limits of elasticity. In 1951-52 he formulated 

 a theory of modeling in the processes of preparing metals by 

 pressure. In 1953-54 he established a postulate on isothropy in 

 general theory on plasticity. Il'yushin also solved a number of 

 problems in gaseous dynamics. 

 Bibliography: 



Deformation of a viscous-plastic body. Scientific Research 

 Papers of Moscow University. Mechanics, 1940, #39. 

 Several questions on the theory of plastic deformations. 

 Applied Mathematics and Mechanics, 1943, 7^, #4. 

 Elastic -plastic stability of plates. Applied Mathematics and 

 Mechanics, 1946, 10, #5-6. 



Plasticity, Part I— Elastic-Plastic Deformation. Moscow- 

 Leningrad: 1948. 



Modeling of hot and high speed processes of preparing 

 metals by pressure. Applied Mathematics and Mechanics, 

 1952, 16, #4. 



Connection between tension and small deformations in me- 

 chanics of solid media. Applied Mathematics and Mechanics, 

 1954, 18, #6. 



