Dynamic stress concentration in a strip plate with fillet

被引：6

作者：

Nakayama, N ^{[1
]}

Ohashi, M ^{[1
]}

Takeishi, H ^{[1
]}

机构：

[1] Chiba Inst Technol, Grad Sch, Chiba 2750016, Japan

来源：

JSME INTERNATIONAL JOURNAL SERIES A-SOLID MECHANICS AND MATERIAL ENGINEERING | 1998年 / 41卷 / 03期

关键词：

stress concentration; stress wave; experimental stress analysis; impact strength; high polymer materials;

D O I：

10.1299/jsmea.41.326

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A method of measuring the maximum dynamic stress concentration factor alpha(Dmax) in a fillet has not yet established. The reflection and transmission of stress wave during the propagation through a fillet result in complex stress states. We propose a new method for analyzing the maximum dynamic stress concentration factor alpha(Dmax) in a fillet utilizing the stress concentration factor alpha(s) and the reflection coefficient A obtained by a strain gauge on the incident strip plate. In this experiment, a square wave (a stress wave with a plateau of constant stress for long duration) is used. A strain gauge measures the reflection coefficient A. The factor alpha(Dmax) in the fillet is analyzed using a dynamic photoelastic method. It is confirmed that alpha(Dmax) is approximated by the following equation: alpha(exDmax) = (1 + A)alpha(s). As a result, the maximum dynamic stress concentration factor is obtained experimentally using the static stress concentration factor and the reflection coefficient.

引用

页码：326 / 331

页数：6

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