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Effect of plastic anisotropy of weld on limit load of undermatched middle cracked tension specimens
Author(s) -
ALEXANDROV S.,
CHUNG K.H.,
CHUNG K.
Publication year - 2007
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.1460-2695.2007.01110.x
Subject(s) - orthotropic material , plasticity , isotropy , limit load , materials science , anisotropy , tension (geology) , yield (engineering) , limit (mathematics) , welding , stress field , structural engineering , stress (linguistics) , mechanics , composite material , mathematical analysis , mathematics , compression (physics) , physics , engineering , finite element method , optics , linguistics , philosophy
Plastic anisotropy may have a significant effect on the limit load of structures. The present paper shows its effect on the limit load of well‐undermatched middle cracked tension specimens assuming that the base material is elastic and the weld material obeys Hill's quadratic orthotropic yield criterion in rigid‐perfect plasticity. The solution is based on a kinematically admissible velocity field, which is compatible with a stress field satisfying the equilibrium equations and the yield criterion in the plastic zone. The velocity field is singular in the vicinity of the bi‐material interface, which is typical for isotropic materials.