Patent ID: 6553325
Filing Date: 2003-04-22
Classification: B63B,F15D,G01M

Abstract:
A method for dimensioning or adapting an elastic structure having a length Lt and immersed in a fluid in motion, comprising:a) defining natural excitation modes of the structure; b) determining for at least a given time t for an excitation mode of the structure holding zones LR over the length Lt and, for each holding zone, an excitation force FR corresponding to an excited natural mode r; c) carrying out step b) for all natural modes defined in step a); and d) determining a vibration amplitude response A of the elastic structure over a part of the length Lt by accounting for an effect of the excitation forces FR on each natural vibration mode defined in step a) so as to obtain a characteristic allowing dimensioning or adapting of the structure to mechanical stresses applied by the fluid in motion.