4.2.2.2 Scaling of Quantities

The more complex a model becomes an increasing number of coupled quantities has to be managed where each of them may have a different characteristic. For instance combining mechanical equations with diffusion mechanisms (e.g.epitaxie, oxidation) implies two completely different characteristics of the quantities. Very small displacements with quasi linear behavior on the one hand and dopant distributions with a magnitude order of 20 and more in comparison to elastic strains on the other hand are a possible scenario which has to be coped with. Both quantities need special treatment in case of interpolation and Newton iteration. Therefore each quantity can be scaled reflecting its characteristics:

• linear scaling: all interpolation methods and update modes are adjusted to linear quantity characteristics (default)

  Scale(<QuantityName>) = Lin # use linear interpolation
  

• logarithmic scaling: all interpolation methods and update modes are adjusted to logarithmic quantity characteristics:

  Scale(<QuantityName>) = Log # use logarithmic interpolation