基于改进Guyan减缩的混合型减缩系统

本文利用改进Ｇｕｙａｎ减缩解逼近特征系统中的惯性力，然后引入普通模态型减缩法中的模态线性组合表达式。从而建立了一种新的组合型减缩技术。该技术的精度在常规情况下好于普通模态法，同时弥补了新近提出的、完备模态型减缩法不能保持原模型的刚体特性的不足。这样，在结构动力模型的减缩技术方面，本文为工程界提供了更多的选择。

HYBRID TYPE REDUCTION SYSTEM(HRS) BASED ON IMPROVED GLYAN CONDENSATION

In this paper a new Hybrid type Reduction Systcm(HRS) is developed by using the improved Guyan- reduction solution to approach to the inertia force in cigcnsystcm and introducting the linear combination expression of modes for the general mode- type reduction methods. Not only the precision of this technique is in general case better than that of the general modal methods but also the present technique removes the short of recently proposed complete mode type reduction which docs not retain the rigid body characteristics of original model. Thus in the field of structural dynamic model reduction this paper provides a probability of more choices for engineers.