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FRACTURE ASSESSMENT FOR SECONDARY LOADS
Author(s) -
Hallbäck Nils,
Nilsson Fred
Publication year - 1992
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1992.tb00047.x
Subject(s) - finite element method , enhanced data rates for gsm evolution , tension (geology) , structural engineering , fracture (geology) , materials science , linear elasticity , fracture mechanics , composite material , engineering , ultimate tensile strength , telecommunications
The fracture assessment of structures subjected to secondary loading systems was studied by FEM‐analysis of a few illustrative two‐dimensional examples. The first example is an edge‐cracked plate with a thermal gradient. The FEM‐calculations revealed that a purely elastic analysis yielded J ‐values that are in most cases considerably more conservative than the ones calculated from an elastic‐plastic analysis. The results were further compared with different engineering type non‐linear estimates. As a second example a crack emanating from a semi‐circular notch in a rectangular plate was chosen. The plate was subjected to uniaxial tension along its boundaries. It turned out that for the cases considered the J ‐values were fairly close to those elastically predicted.