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The mechanical behavior of an oriented nylon fiber can be
described using the following elastic constants [in
10^{-10} Pa^{-1}]: s_{11}= 7.3,
s_{12}= -1.9, s_{33} = 2.4, s_{13} = -1.1
and s_{44} = 15. What is the tensile modulus of such a
fiber (chain direction is the 33 direction)? If this fiber is
loaded to 20 MPa in uniaxial tension (in the 33 direction) what are
the resultant normal strains (ε_{11}, ε_{22} and
ε_{33})?

Answer #1

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