FATIGUE TESTING OF A SHAPE-OPTIMIZED CIRCULAR HOLE IN A PLATE UNDER TENSILE AND BENDING LOADS

被引：5

作者：

BETHGE, K

MATTHECK, C

机构：

[1] The authors are with the Kernforschungszentrum Karlsruhe, Institut für Material- und Festkörperforschung IV

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 1990年 / 12卷 / 06期

关键词：

SHAPE OPTIMIZATION; COMPUTER SIMULATION; BIOLOGICAL STRUCTURES;

D O I：

10.1016/0142-1123(90)90221-Y

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

With the help of the CAO method a plate with a shape-optimized circular hole has been developed. Its surface stresses have been drastically reduced by attaching material at places of high local stresses and reducing material at locations of low local stresses. Fatigue tests have been performed under tensile and bending loads (to ensure the prolongation of the crack initiation phase). The tests showed that the fatigue life of the shape-optimized specimen could be extended by a factor of at least 3 for tensile loading and at least 25 for bending loading compared to the non-optimized specimen type. This result validates the method used (as an effective method of structural shape optimization).

引用

页码：489 / 492

页数：4