Effect of fibre braiding orientation on the natural frequency of 2D braided composites cantilever beam

Abstract

Studies of numerical simulation and experimental validation are carried out on the planar orthogonal braided composites cantilever beam. On the basis of single-cell model, the model of 1 × 1 orthogonal braided fibre structure is established with the SolidWorks engineering drawing software. Six different loading models are analysed using the finite element software ANSYS. The effective elastic constants are obtained with the homogenisation theory. The finite element model of a cantilever beam is then established, which is made of orthogonal braided composites, where the angle between fibre orientation and periphery varies from 0°to 90°. The experiment is carried out and the natural frequencies are obtained using the free vibration measuring method. The effects caused by the additional mass of sensor are eliminated according to vibration theory, and the results are consistent with those obtained by numerical simulation.

Damage advancement behavior in braided composite structures for mini aerial vehicles

“…Good numerical and analytical prediction techniques suitable for braided textile composites are yet to be developed to attend to the needs of practical applications [7][8][9]. Numerical and analytical models for different structures, including braided tubes [10], surface-core braided structures [11], 2D and 3D braided composites [12][13], and for different loading conditions, e.g., tension [14], compression [15], crush [16], etc., have been reported so far. However, relevant models for braided composites are still relatively limited.…”