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Mechanical modeling of initiation of localized yielding under plane stress conditions in rigid‐rigid polymer alloys
Author(s) -
Sue H. J.,
Pearson R. A.,
Yee A. F.
Publication year - 1991
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760311106
Subject(s) - materials science , composite material , polymer , tangent modulus , plane stress , yield (engineering) , shear (geology) , finite element method , shear stress , tangent , modulus , stress (linguistics) , matrix (chemical analysis) , structural engineering , geometry , mathematics , linguistics , philosophy , engineering
Abstract Two‐dimensional Finite Element Method simulations, which involve consideration of the nonlinearity of a material, have been conducted to gain understanding about the rigid‐rigid polymer toughening concept we proposed. The simulation results for the plane stress condition indicate that as long as the inclusion phase possesses (i) a 60% difference in the tangent modulus from that of the matrix at any given strain level prior to failure or (ii) smaller yield or craze stain than the yield strain of the matrix, then, localized shear yielding will occur around the inclusion. A toughened rigid‐rigid polymer alloy system can then be obtained. The plain strain case is also discussed with an implementation of the rigid‐rigid polymer toughening concept.