BUCKLING BEHAVIOR OF THIN GRP SHELLS

To investigate the buckling behavior of fibreglass-rotorblades finite- element calculations have been carried out by use of the cured composi te-element COMP. The results enable to identify those parameters, whic h mainly affect buckling, like bending stiffness, curvature, imperfect ions, fibre orientation. A simplified calculation method is investigat ed concerning its applicability to fibreglass shells, and is verified by FEM-calculations and results from model-tests. The transformation t o other thin fiber-stuructres is presented.