The calculation of SIF considering the effects of arc crack surfaces contactcm Atlanta and friction under uniaxial tension and pressure
✍ Scribed by Pi-Hua Wen; Yu Wang
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 690 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0013-7944
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✦ Synopsis
This paper provided the discontinuity displacement method to calculate the SIFs considering the contact problem of arc crack surfaces under uniaxial tension and pressure. Compared with the accurate solutions without contact, the error Z is less than 1.2%. This paper emphasised on the analysis of arc crack surfaces contact and friction, and obtained the numerical results of stress intensity factors K,(cp, p) and K,,(cp, p) under uniaxial loads. The contact and separate points p,(r) were found out. As the research on contact problem of crack surfaces, this paper put forward one effective measure.
NOMENCLATURE
radius of the arc opening angle of the crack applied stress at infinity stress intensity factors discontinuity displacement method stress intensity factor E-modulus coefficient of friction middle point of element and its direction angle polar angle of element values of normal and tangent discontinuity displacements for element i contact or separate region critical angle error = 1 R, -em 1 /max( I@ I, I K,,i I thm) mean error = 9 ai/N i=l