Global Modal Parameter Estimation of Weak Nonlinear MDOF System with Coupled Modes - Experimental Study

摘要: In the last few years, many different investigations have been tried to take into account nonlinearity in vibration behaviour of structures. Two approaches can be distinguished: time domain and frequency methods. An other category done between weak strong nonlinearities. As first ones dramatically modify structure behaviour, allow simple extensions linear modal techniques. Few papers present experimental tests, because known nonlinearities are difficult produce.