New design methods for complexly loaded high-speed composite rotors

摘要

The anisotropic polymer composites with their excellent lightweight characteristics and wide scope of designability - for example the possibility to adjust the strength, stiffness and thermal expansion behaviour - offer a new range of performance for advanccd high-speed rotors. For the load adapted design of these high-speed composite rotors, modified calculation methods and material adjusted optimisation strategies as well as new physically based failure criteria are necessarily required. Especially the conventional fracture criteria are unsuitable to determine theoretically the fracture stresses of fibre-reinforced fotore with usually complex three dimensional states of stress. Detailed experimental investigations using the TLK-spin test unit confirm, that exclusively by applying material-adjusted calculation methods the extreme lightweight potential of highly anisotropic composites can be exhausted optimally.