AN INVESTIGATION OF THE DISPERSION LAW FOR I-SECTION BEAMS

被引：1

作者：

CHAPMAN, JR

BUTLER, D

BRAZIERSMITH, PR

机构：

[1] Plessey Co, Plessey Marine Research, Unit, Somerset, Engl, Plessey Co, Plessey Marine Research Unit, Somerset, Engl

来源：

JOURNAL OF SOUND AND VIBRATION | 1985年 / 102卷 / 04期

关键词：

DISPERSION LAW - FLANGE VIBRATION - I-SECTION BEAMS;

D O I：

10.1016/S0022-460X(85)80114-0

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A method for deriving the dispersion law for I-section beams is presented, which explains discrepancies between experiment and the Timoshenko beam equation. The discrepancies are accounted for by allowing the flanges of the model beam to vibrate. The method is confirmed experimentally for different I-section shapes. Application of viscoelastic damping material to the flanges is found to have only small effects on the dispersion law, but flange vibration results in increased loss factors at higher frequencies.

引用

页码：563 / 577

页数：15