- Tytuł:
- The fatigue life estimate by the LEFM concept of the tube joints exposed to axial load
- Autorzy:
-
Djoković, J. M.
Nikolić, R. R.
Bujňák, J.
Hadzima, B. - Powiązania:
- https://bibliotekanauki.pl/articles/131470.pdf
- Data publikacji:
- 2017
- Wydawca:
- Polska Akademia Nauk. Komisja Inżynierii Budowlanej PAN Oddział w Katowicach
- Tematy:
-
tube joints
fatigue life
LEFM
Paris' law
złącza rurowe
trwałość zmęczeniowa
prawo paryskie - Opis:
- In the tube joints the crack growth usually appears along the weld’s edge, i.e. at the spot where the chord and the brace are connected. The semi-elliptical crack the most frequently develops from the initial flaw that originated during the welding. The abrupt change in the material’s structure and response to loading are increasing the normal stresses in the lateral tube at certain spots around the crossing of the main and lateral tubes, producing the “hot spot” stress. Sensitivity to fatigue depends on combination of the cyclic loading, initial defects, environmental influences and the “hot spot” stresses which are the result of the tube walls bending during the loading of the structure. The principles of the Linear Elastic Fracture Mechanics (LEFM) are applied in this paper to analysis of the crack propagation behavior of a thin tube joints. Influence of various parameters was investigated individually and independently, and the share of the fatigue crack growth and subsequently the working life of the welded joint were estimated.
- Źródło:
-
Roczniki Inżynierii Budowlanej; 2017, 17; 35-41
1505-8425 - Pojawia się w:
- Roczniki Inżynierii Budowlanej
- Dostawca treści:
- Biblioteka Nauki
Artykuł