Abstract
Aiming at the question of predicting mechanics properties of long fiber reinforced metal matrix composites (MMC) shafts, two periodical arrangement of fiber, namely Square array and Hexagonal array are considered in structure,based on the Micro-mechanics Finite Element Method (FEM), six representative volume element models (RVE) are presented, calculating the Macro-mechanics properties parameters of the material. The results are compared with that of three frequently Micro-mechanics models.On the basis, taking a low pressure turbine as study object,then the results calculated of specified RVE model will be used in modal analysis of shafts with MMC,the numerical simulation method is used to calculate natural frequency, analyzing the influence of layers angles, thicknesses, sequences on modal and natural frequency.
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