Modal approach for processing one- and three-point bend test data for DSIF-time diagram determination. Part I - Theory

被引：21

作者：

Rokach, IV ^{[1
]}

机构：

[1] Kielce Univ Technol, Dept Engn Mech, PL-25314 Kielce, Poland

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 1998年 / 21卷 / 08期

关键词：

instrumented impact test; dynamic stress intensity factor; hybrid experimental numerical method; modal superposition method;

D O I：

10.1046/j.1460-2695.1998.00087.x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A hybrid experimental/numerical method for the determination of the variation in the dynamic stress intensity factor (DSIF) with time during one- or three-point bend impact tests is presented. According to the concept of hybrid methods, a DSIF-time diagram is calculated for a particular mathematical model for the specimen using experimentally registered loading as the model excitation. The simple expression for the impact DSIF-response function is derived for an arbitrary linear model of the specimen, using the modal superposition method. Finally, formulae for DSIF calculations for different types of loading approximation are derived.

引用

页码：1007 / 1014

页数：8

共 25 条

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