OSSmooth also provides a parameter, pure_surf_smoothing, for conducting a pure surface smoothing of a surface or the surface of a domain.
The file defined by input_file must be in the OptiStruct bulk data format, and can only contain surface information. If any solid element is present, an error message will be displayed.
The usage of pure_surf_reduction, together with laplacian_smoothing, in the OSSmooth parameter file is as follows:
#general parameters
input_file surf
output_file surf.igs
output_code 2
#specific parameters
pure_surf_smoothing 2
laplacian_smoothing 2 80.0 0