FREE-VIBRATIONS OF ARCHES IN PRESENCE OF AXIAL FORCES

被引：4

作者：

FRANCIOSI, C

机构：

[1] Istituto di Scienza delle Costruzioni, Universita di Potenza, Via Nazario Sauro 85, 85100 Potenza, Italy

来源：

JOURNAL OF SOUND AND VIBRATION | 1988年 / 120卷 / 03期

关键词：

EQUATIONS OF MOTION;

D O I：

10.1016/S0022-460X(88)80231-1

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Free vibrations of circular and parabolic arches have been studied in detail, both for clamped arches and for two- and three-hinged arches. In each case it is possible to define ad hoc non-dimensional coefficients, which allow the tabulation of the frequencies. In this letter the arch is reduced to a set of rigid bars and lumped masses, linked together by means of elastic 'cells' and the destabilizing effect of the dead load is investigated. A new non-dimensional coefficient is proposed, and the frequencies of free vibration are tabulated for clamped and two- and three-hinged arches. Finally, two examples show how to use the tables, for deep arches and shallow arches respectively.

引用

页码：609 / 616

页数：8

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