弱粘弹性材料结构振动系统的模态特点  

THE MODAL FEATURES OF VIBRATION SYSTEMS WITH WEAKLY-VISCOELASTIC MATERIAL STRUCTURES

作　　者：陈国平[1] 朱德懋[1] 

机构地区：[1]南京航空学院

出　　处：《航空学报》1990年第11期A539-A544,共6页Acta Aeronautica et Astronautica Sinica

摘　　要：本文把弱粘弹性材料结构分为单模量和多模量情形,展开对其模态性能的讨论。本文指出了弱粘弹性材料结构的特征值是一组有理分式多项式方程的根,并给出了关于这些有理分式多项式方程根的一个定理。根据这一定理和弱粘弹性材料的动态性能特点,阐明了弱粘弹性材料结构的模态特点。The modal features of weakly-viscoelastic material structures for single-modulus materials are discussed in this paper. It is pointed out that the eigenvalues of these structures are the roots of a series of rational fraction polynomial equations. A theorem about the roots of these equations is proved in the paper. Based on it, some important conclusions about the modal features of weakly-viscoelastic material structures are drawn according to their dynamic behavior.

关 键 词：粘弹性材料 弱粘弹性 结构振动 

分 类 号：V214.9[航空宇航科学与技术—航空宇航推进理论与工程]