Segment

Note: There is a newer version of this specification see KBL 2.5.sr1

A Segment is a distance in the Topology where no intermediate electrical contacts appear. If a Topology contains routed wires, then the wires at the beginning of a Segment have to be the same as in the ending. Every segment has its conditions like length, temperature range, etc.

Segments are a logical construct to describe the physical representation of a wiring harness topology. Therefore a segment is only valid if it has a physical manifestation. Segments with a length of 0 or less do not have a physical manifestation and are therefore not valid.

Additionally the usage of segments with a length of 0 create problems in the overall process. For example the synchronization of 3D / 2D systems becomes harder or even impossible and the handling of wire protections on those segments is also unclear.

General Information

Attribute Value
Owner 5_Topology
Applied Stereotype
Base Classifier Changed_element
Is Abstract false
Derived Classifiers

Attributes

Name Type Mult. Description Owning Classifier
Id String 1

The id specifies the identifier of the Segment.

Segment
Alias_id Alias_identification 0..*

The alias_id specifies additional identifiers for the Segment. Example: Segement Ids may vary from one CAD system export to another. Therefore the CAD system Id is improper for Id attribute. Id shall have a value which is unique within the harness. Alias_id may be used for the CAD system Id.

Segment
Start_vector Double 0..3

The start_vector specifies the tangent of the center curve at the start position. Note: The value can be derived from the center_curve. To avoid that the receiving system has to calculate the value, it can be explicitly specified.

Segment
End_vector Double 0..3

The end_vector specifies the tangent of the center curve at the end position. Note: The value can be derived from the center_curve. To avoid that the receiving system has to calculate the value, it can be explicitly specified.

Segment
Virtual_length Numerical_value 0..1

A designed (virtual) length means that the value is derived automatically in a CAD Tool (e.g. from a 3D Geometry).

Segment
Physical_length Numerical_value 0..1

An adapted (physical) length means that the value is not the exact value taken from the CAD tool, but is adapted in some way. Adapted values are supposed for further use in the process, especially as basis for the product specification. Adapted values are normally created for example by rounding the designed values.

Segment
Form Segment_form 0..1

The form specifies information on the geometric shape of the Segment. The following values shall be used: - ‘circular’ - ’noncircular’

Segment

Outgoing Relations

Type Role Mult. Mult. Description
B_spline_curve Center_curve 0..* 1
Node End_node 1 0..*
Cross_section_area Cross_section_area_information 0..* 1
Processing_instruction Processing_information 0..* 1
Fixing_assignment Fixing_assignment 0..* 1
Node Start_node 1 0..*
Protection_area Protection_area 0..* 1

Incoming Relations

Type Mult. Role Mult. Description
Node Folding_direction 0..1

Defines the direction (Segment) in which this Node will be folded (see Description of Node).

Routing 0..* Mandatory_segments 0..*

References a list of segments that are mandatory to be visited during the routing process. As a consequence the Segments determined by a routing algorithm shall contain these Mandatory_segments.

KBL_container 1 Segment 0..*
Dimension_specification 0..* Segments 0..*

Defines an ordered list of segments along which the dimension specification is defined.

Routing 0..* Segments 0..*

Represents the result of a routing algorithm.

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