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.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1990年第11期A539-A544,共6页
Acta Aeronautica et Astronautica Sinica
关键词
粘弹性材料
弱粘弹性
结构振动
viscoelasticity, weakly-viscoelasticity, structural vi-bration, modal characteristics.
