Abstract
The loose lashing wire grouped blade, all blades of which are linked by a loose lashing wire, is a kind of damped blade. The linear analysis method cannot be used for the dynamic analysis of loose lashing wire grouped blade because of the contact between loose lashing wire and blades. A non-linear dynamic analysis method is advanced and an application of the method to a kind of loose lashing wire grouped blade is shown in this paper. First, the nonlinear transient dynamic analysis and maximum entropy spectrum analysis methods for loose lashing wire grouped blade are studied. Then, an algorithm to calculate the dynamical stress of loose lashing wire grouped blade with transient dynamical analysis method is proposed. The proposed method provides a useful numerical calculating method for the calculation of dynamical frequency and dynamical stress of loose lashing wire grouped blades.
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