Critical plane approach for the assessment of the fatigue behaviour of welded aluminium under multiaxial loading

被引：50

作者：

Kueppers, M ^{[1
]}

Sonsino, CM ^{[1
]}

机构：

[1] Fraunhofer Inst Struct Durabil LBF, Dept Component Related Mat Behav, D-64289 Darmstadt, Germany

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2003年 / 26卷 / 06期

关键词：

aluminium welds; bending and torsion; critical plane; multiaxial stress states;

D O I：

10.1046/j.1460-2695.2003.00674.x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Multiaxial stress states occur in many welded constructions like chemical plants, railway carriages and frames of trucks. Those stresses can have constant and changing principal stress directions, depending on the loading mode. Latest research results on welded steel joints show a loss of fatigue life for changing principal stress directions simulated by out-of-phase bending and torsion compared to constant directions given by in-phase loading. However, aluminium welds reveal no influence of changing principal directions on fatigue life compared to multiaxial loading with constant principal stress directions. This behaviour is not predictable by any conventional hypothesis. A hypothesis on the basis of local normal and shear stresses in the critical plane has been developed and applied to aluminium weldings.

引用

页码：507 / 513

页数：7

共 9 条

[1] A review of multiaxial fatigue of weldments:: experimental results, design code and critical plane approaches [J].