An improved Guyan reduction and successive reduction procedure of dynamic model
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KeyWord:generalizde inverse,successive approximation,eigenvalue problems/reduction of model
Zhang Dewen
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      Based on the generalized inverse technique and successive approach idea,an improved Guyan reduction and a successive-level quasi-dynamic reduction procedure of analysis model have been developed in this paper.The precision of these methods is obviousely better than that of other metheds with the same level,however computer time required for operating these methods is almost the same as that of other methods with the same level. Thus,it is concluded that the methods of the present paper are the best "physics - type"quasi - dynamic reduction techniques of model on both the precision and computer time,in which so-called" physics-type "means that the condensation transformation matrix of model contains only physical parameter in formations and do not modal parameters.