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Gury Vasilievich Kolosov

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25 Aug 1867

Ust, Novgorod guberniya, Russia

7 Nov 1936

Leningrad (now St Petersburg), Russia

Gury Kolosov was educated at St Petersburg and after working at Yurev University from 1902 to 1913, he returned to St Petersburg where he spent the rest of his career. He studied the mechanics of solid bodies and the theory of elasticity.

In 1907 Kolosov derived the solution for stresses around an elliptical hole. It showed that the concentration of stress could become far greater, as the radius of curvature at an end of the hole becomes small compared with the overall length of the hole. Engineers have to understand Kolosov results so that stresses can be kept to safe levels.

From 1908 onwards Kolosov devoted himself exclusively to the study of elasticity where the formulae he discovered are still used.

Source:School of Mathematics and Statistics University of St Andrews, Scotland