Zero group velocity longitudinal modes in an isotropic cylinder

被引：0

作者：

Hussain, Takasar ^{[1
]}

Ahmad, Faiz ^{[2
]}

Ozair, Muhammad ^{[1
]}

机构：

[1] COMSATS Inst Informat Technol, Dept Math, Attock, Pakistan

[2] Natl Univ Sci & Technol, Sch Nat Sci, Sect H-12, Islamabad, Pakistan

来源：

ACTA MECHANICA SINICA | 2018年 / 34卷 / 03期

关键词：

Isotropic cylinder; Longitudinal modes; Zero group velocity point; LAMB WAVES; CRACK;

D O I：

10.1007/s10409-017-0730-3

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Zero group velocity (ZGV) modes are studied in an isotropic cylinder. The L(0, 2) mode behaves anomalously for the materials with a value of the bulk velocity ratio, , in the range and normally otherwise. All higher modes, except the first few, have no ZGV point for all isotropic materials. This is explained analytically by finding the slope of phase velocity dispersion curves of modes first when the phase velocity equals and then at their initial state.

引用

页码：475 / 481

页数：7

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