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Application module:
Product replacement |
ISO/TS 10303-1046:2006(E)
© ISO
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This clause specifies the information requirements for the
Product replacement
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
Product_replacement_arm
schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA Product_replacement_arm;
(*
The following EXPRESS interface statements specify the elements
imported from the ARMs of other application modules.
EXPRESS specification:
*)
USE FROM
Assembly_structure_arm;
--
ISO/TS 10303-1026
USE FROM
Product_identification_arm;
--
ISO/TS 10303-1017
(*
NOTE 1
The schemas referenced above are specified in the following
part of ISO 10303:
| Assembly_structure_arm |
ISO/TS 10303-1026 |
| Product_identification_arm |
ISO/TS 10303-1017 |
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.
An Alternate_product_relationship is an association between two instances of
Product.
It specifies that any version of the
alternate_product,
may be used in place of any version of the base_product.
The relationship established by the Alternate_product_relationship is not symmetric:
if B is an alternate product for A, A is not implied to be an alternate product for B.
NOTE 1
If a product is an alternate for another product, it is understood
that there is no interest to keep track of which product, the base or any alternates specified, is used as a particular
instance of the base product within a product structure.
NOTE 2
An organization may track design changes for a base part, and establish effectivity conditions for the use
of that base part in various assemblies to be manufactured. The use of an
alternate product implies that an organization does not specify any particular version of the alternate
product nor establish effectivities relating to it.
NOTE 3
An Alternate_product_relationship may relate products of any kind, provided both related instances of
Product
identify products of the same kind, for example part-part or document-document.
NOTE 4
An Alternate_product_relationship for which the base_product is an assembly
involves that the entire product structure of the alternate_product may be used in place of the
base_product and its product structure.
EXAMPLE
Two bolts of the same size are products. One bolt has a square head
and the other has a hexagonal head. The two bolts are considered equivalent with respect to form, fit, and function:
they both have sufficiently close physical shape, they take up the same space when used,
and they both serve to fasten two things together.
Thus, one of these two bolts could be considered to be an alternate part for the other bolt.
EXPRESS specification:
*)
ENTITY Alternate_product_relationship;
name :
OPTIONAL
STRING;
description :
OPTIONAL
STRING;
alternate_product : Product;
base_product : Product;
criteria :
OPTIONAL
STRING;
UNIQUE
UR1: alternate_product, base_product;
WHERE
WR1: alternate_product :<>: base_product;
WR2: EXISTS(criteria) OR (TYPEOF(SELF\Alternate_product_relationship) <> TYPEOF(SELF));
END_ENTITY;
(*
Attribute definitions:
name:
the words by which the Alternate_product_relationship is known.
The value of the attribute need not be specified.
description:
the text that provides further information about the Alternate_product_relationship.
The value of the attribute need not be specified.
alternate_product:
the
Product
that may be used in place of the base_product.
base_product:
the
Product
that may be replaced.
criteria:
a text description that specifies the rationale and criteria used to assess the capability of replacing the
base_product
by the
alternate_product.
EXAMPLE
The concept of alternate products usually refers to form, fit, function, and quality.
Additional properties such as performance, noise, endurance, or reliability
may also be considered as a prerequisite for the replacement.
Formal propositions:
UR1:
The combination of the alternate_product and the base_product shall be unique.
WR1:
The instance for the alternate_product shall not be the same as the instance of the base_product.
WR2:
If SELF is exact instance of Alternate_product_relationship, then criteria shall be provided.
An Assembly_relationship_substitution is a relationship that indicates that an
Assembly_component_relationship
may be substituted by another
Assembly_component_relationship.
Both assembly relationships shall refer to the same
Product_view_definition
of the same assembly.
NOTE 1
Consequently, an Assembly_relationship_substitution actually specifies that the product version
that plays the role of component in the substitute_relationship
may be replaced by the product version that plays the role of component in the base_relationship.
NOTE 2
The instance of the substitute constituent does not require the same spatial relationship or the same
quantity. A substitute constituent does not require equivalent form, fit, and function of the constituent for
which it is a substitute.
NOTE 3
As instances of
Assembly_component_relationship
establish assembly relationships relevant in the definition contexts of the assembly,
the substitution only apply in these contexts.
An Assembly_relationship_substitution defines a one-way substitution: if A is specified as a substitute for
B, B is not implied to be a substitute for A.
EXPRESS specification:
*)
ENTITY Assembly_relationship_substitution;
name :
OPTIONAL
STRING;
description :
OPTIONAL
STRING;
base_relationship : Assembly_component_relationship;
substitute_relationship : Assembly_component_relationship;
UNIQUE
UR1: base_relationship, substitute_relationship;
WHERE
WR1: base_relationship.relating_view :=: substitute_relationship.relating_view;
WR2: base_relationship :<>: substitute_relationship;
END_ENTITY;
(*
Attribute definitions:
name:
the words by which the Assembly_relationship_substitution is known.
The value of the attribute need not be specified.
description:
the text that provides further information about the Assembly_relationship_substitution.
The value of the attribute need not be specified.
base_relationship:
the
Assembly_component_relationship
that may be substituted.
substitute_relationship:
the
Assembly_component_relationship
that may be used in place of the base_relationship
Formal propositions:
UR1:
The combination of base_relationship and substitute_relationship shall be unique.
WR1:
The parent
Product_view_definition
shall be the same instance for both the base_relationship and substitute_relationship.
WR2:
An
Assembly_component_relationship
shall not be a substitute for itself.
*)
END_SCHEMA; -- Product_replacement_arm
(*
© ISO 2006 — All rights reserved
