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Main > Support > Glossary
3D import
STEP files, imported to QuickField from major CAD packages, should include one body and multiple shells.
Following 3D topologies are allowed:
Description |
Typical look of imported part |
With the background region* in QuickField |
1. Single solid body
(union/subtraction of simple shapes)
 Examples:
Dielectric ellipsoid in the uniform electric field
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This is a single body constructed as a result of substraction of spherical segment form a cube. |
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2. Single solid body
with internal cavities/inclusions not touching each other
Examples:
Conducting sphere inside capacitor
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A cube has inclusion (other body) of a cone shape (marked green).
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3. Multiple solid bodies with different permittivities not touching each other.
(may be converted to the case 2 by subtracting from the surrounding media).
Examples:
Bus-bars
Mushroom electrodes
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Cylinder and cone objects not touching each other.
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4. Multiple solid bodies of the same permittivity which are touching each other
(may be converted to the case 1 by performing the union of bodies).
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Cylinder and cone objects in contact.
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* Background region - rectangular box enclosing the whole model at the predefined distance from it.
These topologies are currently not allowed:
Description |
Typical look |
Suggested workaround |
Single solid body with several inclusions which are touching each other |
The grey cube includes the gray cylinder and green cone that are in direct contact with each other.
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The universal workaround is adding the small gap between the touching objects. This would convert problem to one of the cases from the table above.
Examples:
Spark plug electric field
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Multiple solid bodies of the same permittivity are touching each other with boundary conditions set in between. |
Cylinder and cube are touching each other. There is a boundary condition to be set at the contact surface (marked green).
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Multiple solid bodies made of materials with different permittivity are touching each other.
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The grey cube touches the green cylinder made of different material.
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