Analysis Of Damage Tolerance To Tear Propagation In Stressed
Structural Fabrics
Author(s)
T.A. Godfrey & J.N. Rossettos
Abstract
Analysis of damage tolerance to tear
propagation in stressed structural fabrics
T.A. Godfrey & J.N. Rossettos
^Dept.of Mechanical Ind. & Manuf Engineering, Northeastern
University, Boston MA 02775, USA
Abstract
A simple micromechanical model is used to study the onset of tear propagation
at slit-like damage sites (i.e., a series of consecutive aligned yarn breaks) in
biaxially stressed plain weave fabrics under increasing load. The method of
treating the frictional slip of yarns near the damage site is critical to the success
of the model. Although the actual configuration of slipping regions and rotation
of yarns is complex, the onset of tear propagation in large slits (i.e., more than
say 35 breaks) is dominated by slip occurring on the first few intact yarns
adjacent to the breaks. Analytical results, relating the stress concentration in the
intact yarn adjacent to the yarn break at the slit tip, versus the critical applied
load at the onset of tear propagat
Keywords
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