Estimation of the resistance to the initiation of fatigue cracks in the welded joints of steel constructions
- 作者: Odesskii P.1, Shuvalov A.2, Emel’yanov O.3
-
隶属关系:
- TsNIISK
- NIU MGSU
- MGTU
- 期: 卷 2017, 编号 4 (2017)
- 页面: 334-338
- 栏目: Diagnostics and Mechanical Test Techniques
- URL: https://journals.rcsi.science/0036-0295/article/view/171459
- DOI: https://doi.org/10.1134/S0036029517040176
- ID: 171459
如何引用文章
详细
The problem of choosing an effective approach to determining the fatigue strength of welded butt joints at the stage of crack nucleation is solved. The results of the calculations performed according to the existing building code from the specified strength characteristics and the calculations that take into account local elastoplastic deformation in stress concentration zones are compared. Full-scale specimens of the welded joints of pair angles are tested in the low-cycle fatigue region at a constant load. The kinetics of the state of stress in the zones of terminating flange welded joints is studied by a tensometric method. It is shown that the stage of fatigue crack nucleation is best described using the deformation criterion of fracture: a comparison of the results of calculating the number of cycles to the nucleation of a fatigue crack with experimental data demonstrates good agreement.
作者简介
P. Odesskii
TsNIISK
编辑信件的主要联系方式.
Email: odesskiy@tsniisk.ru
俄罗斯联邦, Moscow, 109428
A. Shuvalov
NIU MGSU
Email: odesskiy@tsniisk.ru
俄罗斯联邦, Moscow, 129337
O. Emel’yanov
MGTU
Email: odesskiy@tsniisk.ru
俄罗斯联邦, Magnitogorsk, 455000
![](/img/style/loading.gif)