Simulation of stress-deformed state and evaluation of bearing ability of blades under tests of housings for impermeability} / P. A. Vaganov, A. R. Lepeshkin. // Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika. 2013. № 2. P. 29-33 [Moscow Univ. Math. Bulletin. Vol. 72, N 2, 2017. P. 0].

A numerical method to determine the stress-strain state and bearing capacity of a blade for breaking the blade is proposed. The method of blade breakage consists in a redistribution of stresses in the rear cross section of the blade because of an additional thermal loading and in the enforcement of destruction over this cross section at a given frequency of rotation. Some results of numerical study of the stress-strain state are discussed for the case when the cross section is weakened. The proposed method was used to test the impenetrability of the frame using an acceleration stand.}

Key words: blade, numerical method, strength, stresses, break, weakened cross section, heating, additional loading.

№ 2/2013