Models of multiaxial fatigue fracture and service life estimation of structural elements

Determination of the Critical Plane and Assessment of Fatigue Durability Under Various Cyclic Loading Regimes

“…Определив компоненты нормали к этой плоскости, можно вычис-лить значение функции Финдли и соответствующее ему число N, т.е. усталостную долговечность элемента конструкции, находящегося в многоосном напряженном со-стоянии [18].…”

“…Ранее в [18] была предложена процедура определения параметров классических мно-гоосных критериев (Сайнса [19], Кроссланда [20]) в диапазоне МЦУ и МНЦУ по резуль-татам одноосных испытаний с двумя разными коэффициентами асимметрии цикла (левая ветвь бимодальной одноосной усталостной кривой [17] (рис. 1).…”

Investigation of Mesh Sensitivity Influence to Determine Crack Characteristic by Finite Element Methods

“…A distinguishing feature of the fatigue fracture of metal pieces is the presence of fatigue grooves perpendicular to the crack propagation direction [5]. There are several basic types of criteria and models of fatigue fracture which permit estimating the number of loading cycles that a material sample or a structural element can endure before failure; the criteria are based on evaluating the stress state, strain state, or accumulated fatigue [6].…”

Processing of Experimental Data by Means of Nonparametric Statistics

“…In the practice of processing experimental data for solving strength reliability problems it is traditionally accepted [1,2] that required function ) ( X P is known up to the finite number of the parameters. In this case, the problem of density recovery is well-posed and its solution uses methods of parametric statistics [2][3][4][5][6][7][8][9][10].…”