Application module: Physical breakdown | ISO/TS 10303-1215:2008(E) © ISO |
This clause specifies the information requirements for the Physical breakdown application module. The information requirements are specified as the Application Reference Model (ARM) of this application module.
NOTE 1 A graphical representation of the information requirements is given in Annex C.
NOTE 2 The mapping specification is specified in 5.1. It shows how the information requirements are met by using common resources and constructs defined or imported in the MIM schema of this application module.
The following EXPRESS specification begins the Physical_breakdown_arm schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA Physical_breakdown_arm;
(*
The following EXPRESS interface statement specifies the elements imported from the ARM of another application module.
EXPRESS specification:
*)
USE FROM
Product_breakdown_arm;
--
ISO/TS 10303-1248
(*
NOTE 1 The schemas referenced above are specified in the following part of ISO 10303:
Product_breakdown_arm ISO/TS 10303-1248
NOTE 2 See Annex C, Figures C.1and C.2 for a graphical representation of this schema.
This subclause specifies the ARM entities for this module. Each ARM application entity is an atomic element that embodies a unique application concept and contains attributes specifying the data elements of the entity. The ARM entities and definitions are specified below.
The parent-child view is represented by Physical_element_usage instances relating the physical elements in the breakdown which are represented by Physical_elements.
EXAMPLE A physical breakdown might provide a decomposition of an automobile in terms such as body, roof, bonnet, bumpers and this breakdown might be differerent from, and orthogonal to, a parts decomposition.
EXPRESS specification:
*)
ENTITY Physical_breakdown
SUBTYPE OF (Breakdown);
END_ENTITY;
(*
EXAMPLE A wheel is a member of the physical breakdown of an automobile.
EXPRESS specification:
*)
ENTITY Physical_breakdown_context
SUBTYPE OF (Breakdown_context);
SELF\Breakdown_context.breakdown : Physical_breakdown_version;
SELF\Breakdown_context.breakdown_element : Physical_element_definition;
END_ENTITY;
(*
Attribute definitions:
breakdown: the version of the Physical_breakdown of which the Physical_element is a member.
breakdown_element: the view of the version of the Physical_element that is a member of the Physical_breakdown.
EXAMPLE An engineer modifies the current physical breakdown for an aircraft on the basis of a tail re-design.
EXPRESS specification:
*)
ENTITY Physical_breakdown_version
SUBTYPE OF (Breakdown_version);
SELF\Breakdown_version.of_product : Physical_breakdown;
END_ENTITY;
(*
Attribute definitions:
of_product: the Physical_breakdown_version shall only be a version of a Physical_breakdown .
EXPRESS specification:
*)
ENTITY Physical_element
SUBTYPE OF (Breakdown_element);
END_ENTITY;
(*
EXPRESS specification:
*)
ENTITY Physical_element_definition
SUBTYPE OF (Breakdown_element_definition);
SELF\Breakdown_element_definition.defined_version : Physical_element_version;
END_ENTITY;
(*
Attribute definitions:
defined_version: the Physical_element_definition shall only be a view of a Physical_element.
EXAMPLE In a physical breakdown, the aircraft (parent) might include (as children) a fuselage, wings, tail and undercarriage.
EXPRESS specification:
*)
ENTITY Physical_element_usage
SUBTYPE OF (Breakdown_element_usage);
SELF\Breakdown_element_usage.parent_element : Physical_element_definition;
SELF\Breakdown_element_usage.child_element : Physical_element_definition;
END_ENTITY;
(*
Attribute definitions:
parent_element: the parent physical element of the relationship.
child_element: the child physical element of the relationship.
EXAMPLE An engineer changes the details describing the undercarriage that is an element in a physical breakdown of an aircraft.
EXPRESS specification:
*)
ENTITY Physical_element_version
SUBTYPE OF (Breakdown_element_version);
SELF\Breakdown_element_version.of_product : Physical_element;
END_ENTITY;
(*
Attribute definitions:
of_product: the Physical_element_version shall only be a version of a Physical_element .
*)
END_SCHEMA; -- Physical_breakdown_arm
(*
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