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Information × Registration Number 0222U000758, 0121U110385 , R & D reports Title Development of a methodology for determining the influence of damage parameters on the modal characteristics of composite rod elements of a layered structure popup.stage_title Head Savchenko Kyrylo Valentynovych, Registration Date 18-01-2022 Organization GS Pisarenko Institute of Strength Problems of the National Academy of Sciences of Ukraine popup.description2 The analysis of the current state of research of modal characteristics of composite structures with damage and approaches to their modelling is carried out. Based on the concept of an effective module for determination the elastic properties of a composite material, a three-dimensional finite element model of a rod made of unidirectional carbon fiber with local surface damage in the form of a rectangular notch was developed. Its reliability is confirmed by comparing the results of determining the frequency of the main mode of bending vibrations of the intact rod varying the anisotropy of the elastic properties of the composite material with known experimental data. The results of numerical studies to determine the influence of the parameters of damage and anisotropy of the composite material on the change in the frequency of the main mode of vibrations of the cantilever rod are also presented.  Product Description popup.authors popup.nrat_date 2022-03-09 Close