The fiber orientation prediction code has calculated the theoretical maximum value for the elastic modulus in 1st principal direction (E1) value, if all fibers are aligned with the flow direction (<fully_aligned_E1_value>), using the micro-mechanics model selected in the solver parameters. The composite (matrix+fibers) Elastic modulus, 1st principal direction (E1) value specified in the mechanical properties of the currently selected material is greater than this theoretical maximum value, which suggests the composite value is invalid.
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