Open AccessDAMAGE AND FRACTURE MECHANICS CONCEPTS IN CALCULATING CYCLICALLY LOADED PRESSURE EQUIPMENT
Author(s) -
Vali-Ifigenia Iordăchescu,
Teodor Sima
Publication year - 2016
Publication title -
journal of engineering studies and research
Language(s) - English
Resource type - Journals
eISSN - 2344-4932
pISSN - 2068-7559
DOI - 10.29081/jesr.v19i2.124
Subject(s) - superposition principle , fracture mechanics , stress intensity factor , displacement (psychology) , structural engineering , fracture (geology) , welding , mechanics , damage mechanics , stress (linguistics) , materials science , crack tip opening displacement , engineering , physics , composite material , mathematics , mathematical analysis , finite element method , psychology , linguistics , philosophy , psychotherapist
In the history of technology there occurred many accidents caused by the presence and propagation of cracks in a mechanical structure, especially cracks in weld seams or already existing in the material. The paper evaluates the damage caused by cracks, the superposition of effects by using fracture mechanics concepts (the stress intensity factor, the contour integral and the crack tip opening displacement), while in the case of superposition fracture modes I and II , the relation was checked against the experimental literature data.