This is a new feature that has been rolled out to a limited number of customers for testing. Please contact Neara if you are interested in testing this feature.
Neara allows Equipment to be modelled. The Equipment library can be found through the main Library menu. Once Equipment has been created it can be added to poles or beams within an assembly.
Library
In the library Equipment can be modelled. Examples could be street lighting, pole mounted transformers, load break switches, drop out fuses etc.
General
This section has the overall fields for the Equipment
Field | Description |
Key | Label of the Equipment |
Mass | Mass of the Equipment |
Wind Area | Wind Area of Equipment (this wind area will apply irrespective of the wind direction) |
Attachment Point | The place where the equipment connects to the pole |
Tags | Tags that can be added to the Equipment |
Attachment Point
The Attachment Point defines where the equipment connects to the pole/beam and is shown by a circle with a cross as shown below. Note the equipment will only connect to a pole at a single point (and hence in the example shown the top brace connection is only there there for visualisation purposes but will not transfer load onto the pole).
Parts
The Equipment is made up of one or more parts. Each part has the following fields. Additional buttons under each parts are Copy Part and Remove Part.
Field | Description |
Label | Label of the part |
Position | This is the position of the centroid of the part |
Orientation Angles | Allow for yaw, pitch and roll |
Type | Options are |
Depth (X) | Depth of Box |
Width (Y) | Width of Box |
Height (Z) | Height of Part |
Diameter | Diameter of Cylinder or Post Insulators |
Engineering Model
Neara will calculate the centre of volume from all the parts that make up the equipment create a ridged element out to that point where the mass and the wind load will be applied. Hence the Equipment will create a bending moment at the attachment point. Note the weight of the equipment is scaled by the Gs load factor in the environment and the wind area is scaled by the Wn load factor.
For example the below model will have a ridged element created that will be about half way up the street light as shown below.
FEA model:
Adding Equipment to Assembly
Equipment can be added to an assembly in the Equipment section. The Attached To allows Equipment to be connected to either a pole or a beam. Rotation angles can be used to rotate Equipment. The X -X O Y -Y can be used to control if the Equipment attaches to the centre of the pole/beam or the outside face of the pole/beam.
Below is an example of modelling drop out fuses:
