Тип публикации: статья из журнала
Год издания: 2018
Идентификатор DOI: 10.1016/j.apm.2018.01.020
Ключевые слова: edge dislocation, fan-shaped mechanism, shear rupture, singular integral equation, Successive approximations
Аннотация: The mathematical model of an equilibrium fan-structure in the interface between two elastic blocks, simulating the shear rupture head in a hard rock under high confining pressure, is constructed. The stress–strain state far from the fan-structure is analyzed with the help of a solution of the problem on edge dislocation. The fan leПоказать полностьюngth is estimated using this solution. The model of formation of two oppositely directed fans due to the localized action of tangential stress, which pushes two edge dislocations with antiparallel Burgers vectors, is proposed. In complete formulation, the problem on an equilibrium fan-structure in the interface between infinite elastic half-planes is analyzed by means of original method of superposition of dislocations, leading to two nonlinear integral equations in the fan zone. To solve them numerically, the method of successive approximations is applied. Based on this method, fields of stresses and displacements around the equilibrium fan modelling of a deep-seated shear rupture in the seismogenic zone of the Earth's crust are computed. Such fields can be used, when setting the initial data in the analysis of dynamics of the fan-shaped mechanism.
Журнал: Applied Mathematical Modelling
Выпуск журнала: Т. 57
Номера страниц: 268-279
ISSN журнала: 0307904X
Издатель: Elsevier Science Publishing Company, Inc.