Reliability assessment of a bi-material notch: Strain energy density factor approach

0354586 - ÚFM 2011 RIV NL eng J - Článek v odborném periodiku
Klusák, Jan - Knésl, Zdeněk
Reliability assessment of a bi-material notch: Strain energy density factor approach.
Theoretical and Applied Fracture Mechanics. Roč. 53, č. 2 (2010), s. 89-93. ISSN 0167-8442. E-ISSN 1872-7638
Grant CEP: GA ČR GAP108/10/2049; GA ČR GA101/08/0994
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: crack initiation * bi-material notch * strain energy density factor
Kód oboru RIV: JL - Únava materiálu a lomová mechanika
Impakt faktor: 1.073, rok: 2010

Joints of different materials have many applications in structural engineering and microelectronics. In the present contribution the joint is modelled as a bi-material notch. The singular stress field near the notch tip is investigated. Depending on the notch geometry and materials, the stress field can have one or two singularities. It is shown that to study the problem of a crack onset at the notch, both terms have to be taken into account. Criteria for the direction and for crack nucleation are formulated. The approach utilizes the knowledge of the strain energy density factor distribution in a bi-material notch vicinity.
Trvalý link: http://hdl.handle.net/11104/0193556