Bulk Data Entry The initial fractional move limit for topography/shape design variables (fractional difference between the upper and lower bounds).


Parameter Values Description
DELSHP Real > 0.0

Default = 0.2

Defined as the fractional difference between the upper and lower bounds.

Only the initial value of the move limits can be set. Move limits are automatically adjusted to enhance iterative stability and convergence speed.

The move limits for subsequent iterations may not be greater than this initial move limit.


  1. DELSHP does not apply for classic free-shape optimization. In this case, MVFACTOR in the PERT continuation line of the DSHAPE Bulk Data Entry is used to control the move limits.