Transactions of Nanjing University of Aeronautics & Astronautics
Dynamic Characteristics Analysis of Multilayer Fiber Reinforced Plastic Shaft
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Abstract:
In order to study the dynamic characteristics of multilayer fiber reinforced plastic （MFRP） shaft， the coupling model of three-dimensional equivalent bending stiffness theory and transfer matrix method is established， and the influence of thickness-radius ratio， length-radius ratio， layer angles， layer proportion， and stacked approaches on MFRP shaft dynamic characteristics is investigated. The result shows that the proposed coupling model has high accuracy in MFRP shaft dynamic performance prediction. The proportion of small-angle layers is the decisive factor of MFRP shaft natural frequency. With the increase of thickness-radius ratio and length-radius ratio， the natural frequency of MFRP shaft decreases. The natural frequency of MFRP shaft with the angle layers combination of ±45° and ±90° is smaller compared with the metal shaft no matter in simple/free boundary condition or simple/simple supported boundary condition.
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Clc Number:
TH133
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