Model Protection Limitations

There are various restrictions on simulations that include password-protected models. Some restrictions are imposed to protect the information contained inside the protected model, while other restrictions will be lifted in future releases,

The process of running a simulation with a model that includes imported protected models is the same as for a model that does not contain imported protected models. Various limitations on output file formats and solution output will be imposed when parts of the simulation are protected. Some parts of text files (such as the .pre file) will be encrypted and will not be editable or readable. The solver will limit details written to the screen as well as output files and certain output files, such as export of files for thermal analysis, are not supported and if requested, the setting to write out these files will be ignored. Some requests, most notably currents, will be excluded from the simulation even if the requests are defined. Near fields can be requested and will be calculated, but only the results that fall outside the bounding box of the protected part will be available. Warning and error messages in the CADFEKO notification centre will indicate where these limitations are applied.

Note: Limitations on calculation requests will be relaxed in future releases.

Fek files which include protected models cannot currently be loaded into POSTFEKO. This means that models that contain protected parts cannot be visualised in the 3D view. Results can be plotted on 2D and surface graphs and post-processed as normal. Results that can be viewed in the 3D view (such as far fields) need to be copied to a custom dataset before adding them to a 3D view. This restriction will be relaxed in future releases.

Table 1. Supported solver combinations of the protected model and the rest of the model.
Protected Model	Rest of Model	Info
SEP	Windscreen	Protected model contains dielectric(s) using SEP. Rest of model contains mesh elements solved with the Windscreen method.
SEP	SEP with MLFMM	Protected model and rest of model contain dielectric(s) using SEP. The MLFMM solver is activated.
SEP	FEM	Protected model contains dielectric(s) using SEP. Rest of model contains dielectric(s) using FEM.
MoM	UTD	Protected model contains metallic-only faces using MoM. Rest of model contains faces set to UTD.
MoM	RL-GO	Protected model contains metallic-only faces using MoM. Rest of model contains faces set to RL-GO.
MoM	PO	Protected model contains metallic-only faces using MoM. Rest of model contains metallic-only faces set to PO.
PO	MoM	Protected model contains metallic-only faces using PO. Rest of model contains metallic faces set to MoM.
PO	MLFMM	Protected model contains metallic-only faces using PO. The MLFMM solver is activated.