Effectiveness of 2-D and 3-D modelling of dovetail joint of composite fan blade for choosing rational reinforcement schemes
Автор: Guseinov K., Kudryavtsev O.A., Sapozhnikov S.B.
Статья в выпуске: 1, 2021 года.
Бесплатный доступ
Turbofan jet engines are among the most complex and responsible constructions in the world. The creation of modern globally competitive engines is impossible without the use of digital twin technologies: a set of computational models that fully describe the behaviour of the structure under any operating conditions. Today, composite materials are widely used in many industries. In aircraft engines, their use is very promising for fan blades and fan case to reduce the overall weight of the engine and inertial loads. The dovetail joint of the fan blade works in compound stress conditions. To assess the strength of this element, it is necessary to consider a three-dimensional formulation of the problem, which requires significant computational resources. The use of composite materials is complicated by the complexity of preparing mesh models. A correct choice of the material strength criterion is another important factor that must be taken into account during the analysis of the mechanical behaviour of the thick-walled composite structures. The chosen criterion largely determines the reliability and weight efficiency of the composite structure. This paper considers the possibility of replacing the three-dimensional statement of the problem with a two-dimensional one when choosing rational reinforcing schemes for the dovetail joint of a CFRP fan blade at the initial stages using Daniel strength criterion.
Digital twin, aircraft jet engine, composite fan blade, dovetail joint, numerical simulation, strength analysis, daniel criterion
Короткий адрес: https://sciup.org/146282035
IDR: 146282035 | DOI: 10.15593/perm.mech/2021.1.01
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