Digitale Medien
Oxford, UK
:
Blackwell Science Ltd
Fatigue & fracture of engineering materials & structures
25 (2002), S. 0
ISSN:
1460-2695
Quelle:
Blackwell Publishing Journal Backfiles 1879-2005
Thema:
Maschinenbau
Notizen:
In an adhesive layer sandwiched by stiff substrates, if the plastic zone size rp reaches several layer thicknesses ahead of the crack tip, the maximum stress develops around the region of x1=rp, and the stress level is even higher than the one predicted by the remote K-field. The unusual high stress is due to the restraint of the plastic flow by adhesion with the substrates, which is similar to the ‘friction hill’ occurring in plane strain compression or tension. As a theoretical approach, a slip line field model is proposed, which provides a fairly good approximation of the stress distribution σ22 − x1 within the plastic zone. Using the slip line field approach, a new model is proposed to estimate the plastic zone size.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1046/j.1460-2695.2002.00558.x
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