When using unfilled or particle filled materials, the anisotropic shrinkage may be positive (indicating that the perpendicular shrinkage is dominant), or negative (indicating the parallel shrinkage is dominant). Fiber-filled materials almost always have positive anisotropic shrinkage .
This result uses shrinkage computed at each element before warpage is calculated, therefore these shrinkage values represent the tendency to shrink at each element before the structural influence of the surrounding part is considered.
The difference between the parallel and perpendicular shrinkage in each element is an indication of the warpage due to orientation. The greater the difference, the greater the warpage is likely to be.