Modeling Language

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-* Express_G and Express (ISO 10303-11)
-* Petri net
-* IDEF
-* SysML
-* Energy Systems Language (ESL)
-* Fundamental Modeling Concepts (FMC)

-* Express_G and Express (ISO 10303-11)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75% of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/CD 10303-107 was prepared by Technical Committee ISO/TC 184, Industrial automation systems and integration, Subcommittee SC4, Industrial data.
This International Standard is organized as a series of parts, each published separately. The parts of ISO 10303 fall into one of the following series: description methods, integrated resources, application interpreted constructs, application modules, application protocols, abstract test suites, implementation methods, and conformance testing. The series are described in ISO 10303-1. The numbering of the parts of this International Standard reflects its structure:
• Parts 11 to 14 specify the description methods;
• Parts21 to 29 specify the implementation methods;
• Parts 31 to 35 specify the conformance testing methodology and framework;
• Parts 41 to 53 specify the integrated generic resources;
• Parts 101 to 107 specify the integrated application resources;
• Parts 201 to 237 specify the application protocols;
• Parts 301 to 337 specify the abstract test suites; and
• Parts 501 to 520 specify the application interpreted constructs.
A complete list of parts of ISO 10303 is available from the Internet:
http://www.nist.gov/sc4/editing/step/titles/.
Should further parts of ISO 10303 be published, they will follow the same numbering pattern.
Annexes A and B form an integral part of this part of ISO 10303. Annexes C and D are for information only.
Introduction
ISO 10303 is an International Standard for the computer-interpretable representation of product information and for the exchange of product data. The objective is to provide a neutral mechanism capable of describing products throughout their life cycle. This mechanism is suitable not only for neutral file exchange, but also as a basis for implementing and sharing product databases, and as a basis for archiving. This part of ISO 10303 is a member of the integrated application resources series. This part of ISO 10303 specifies the fea_definition_relationships_schema.
This part of ISO 10303 provides a means of associating finite element analysis information with information about the design and structure of a product. This part of ISO 10303 provides links between:
• finite element information specified by ISO 10303-104; and
• both:
o the product and property definition information specified by ISO 10303-41; and
o the product topology information specified by ISO 10303-42.
These links enable the following:
• a finite element analysis step can be linked to the design specification of the action that the finite element analysis step simulates;
NOTE 1 - This provides additional information about the analysis step, and a navigation route to the analysis step using a Product Data Management (PDM) system.
• a finite element analysis state can be linked to the design specification of the product state that it calculates;
NOTE 2 - This provides additional information about the analysis state, and a navigation route to the analysis state using a PDM system.
• a surface or curve section property can be linked to the design specification of the section;
NOTE 3 - This provides additional information about the section and its properties. The design specification of a variation of surface section properties with respect to position can be specified using ISO 10303-51 and ISO 10303-50.
• an FEA node, FEA element or aspect of an FEA element can be linked to the topology of a product.
NOTE 4 - This provides a direct link between the features of a product as identified by its CAD topology and FEA. This will enable the results from an analysis to be related to a design feature.
The relationships of the schemas in this part of ISO 10303 to other schemas that define the integrated resources of this International Standard are illustrated in Figure 1 using the EXPRESS-G notation. EXPRESS-G is defined in annex D of ISO 10303-11.
Figure 1 - Schema relationshi ps for FEA definition links

To understand the generic resources used in this part of the IEC 61360 series knowledge of
EXPRESS as defined in ISO 10303-11:1994 is required. Basic knowledge of ISO 13584-
24:2003, and ISO 13584-42:1998 is also required.
The generic resources specified in this document were developed as a joint effort of
ISO Technical Committee 184/Subcommittee 4/Working Group 2 and IEC Subcommittee 3D.
They are intended to be documented both in this part of IEC 61360 and ISO 13584. Both
committees agreed not to change and/or modify the EXPRESS schemas independently of
each other in order to guarantee the harmonization and the reusability of the work from both
committees. Requests for amendments should therefore be sent to both committees. These
requests should be adopted by both committees before modifying the EXPRESS schemas.
This document is fully compatible with ISO 13584 parts 42 and 25.
This document contains those extensions to the common ISO13584_IEC61360_dictionary_
schema (IEC 61360-2) that are generated in order to fulfil user needs.
The following parts are copied from ISO 13584-25 and appear in IEC 61360-5 as follows:
ISO 13584-25 IEC 61360-5
Clause 6 Annex A (informative)
Clause 8 Annex B (informative)
Annex C Annex C (informative)
Annex D Annex D (informative)
Annex E Annex E (informative)
Figure F.1 Annex F (informative)
. 6 . 61360-5 IEC:2004(E)
STANDARD DATA ELEMENT TYPES
WITH ASSOCIATED CLASSIFICATION SCHEME
FOR ELECTRIC COMPONENTS .
Part 5: Extensions to the EXPRESS dictionary schema
1 Scope and object
The scope of this part of IEC 61360 is the extension of the common ISO/IEC dictionary
schema for the definition of concepts which are used in IEC 61360-1 but which are not
addressed by the information models specified in IEC 61360-2.
The object of this standard is to provide a formal model for data according to the scope as
given above, and thus to provide, with IEC 61360-2, a means for the computer-sensible
representation and exchange of all data which comply with IEC 61360-1.
The common ISO/IEC dictionary schema as defined in IEC 61360-2 is the common ISO/IEC
dictionary schema based on the intersection of the scopes of the two base standards:
-*IEC 61360-1;
-*ISO 13584-42.
and facilitates a harmonization of both.
Quotation of a relevant part from the scope and object of IEC 61360-1:
This part of IEC 61360 provides a firm basis for the clear and unambiguous definition of
characteristic properties (data element types) of all elements of electrotechnical systems from
basic components to subassemblies and full systems. Although originally conceived in the
context of providing a basis for the exchange of information on electric/electronic
components, the principles and methods of this standard may be used in areas outside the
original conception such as assemblies of components and electrotechnical systems and
subsystems
Quotation of a relevant part from the introduction of ISO 13584-42:
This part of ISO 13584 provides rules and guidelines for library data suppliers to create
hierarchies of families of parts according to a common methodology intended to enable multisupplier
consistency. These rules pertain to the following: the method for grouping parts into
families of parts to form a hierarchy; the dictionary elements that describe the families and
properties of parts.
IEC 61360-2 provides a common information model for the work of both committees, thus
allowing for the implementation of dictionary systems dealing with data delivered according to
either of the standards elaborated by both committees.
61360-5 IEC:2004(E) . 7 .
This part of IEC 61360 provides a Library Integrated Information Model (liim) that, with
resources from IEC 61360-2, ISO 13584 and ISO 10303, allows modelling and exchanging
dictionary information compliant with IEC 61360-1.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 61360-1:2002, Standard data element types with associated classification scheme for
electric components . Part 1: Definitions . Principles and methods
IEC 61360-2:2002, Standard data element types with associated classification scheme for
electric components . Part 2: EXPRESS dictionary schema
IEC 61360-4:1997, Standard data element types with associated classification scheme for
electric components . Part 4: IEC reference collection of standard data element types,
component classes and terms
ISO 10303-11:1994, Industrial automation systems and integration . Product data
representation and exchange . Part 11: Description methods: The EXPRESS language
reference manual
ISO 13584-1:2001, Industrial automation systems and integration . Parts library . Part 1:
Overview and fundamental principles
ISO 13584-24:2003, Industrial automation systems and integration . Parts library . Part 24:
Logical resource: Logical model of supplier library
ISO 13584-25, Industrial automation systems and integration . Parts library . Part 25: Logical
resource: Logical model of supplier library with aggregate values and explicit content 1
ISO 13584-42:1998, Industrial automation systems and integration . Parts library . Part 42:
Description methodology: Methodology for structuring part families


-* Energy Systems Language (ESL)
The Energy Systems Language (right), also referred to as Energese, Energy Circuit Language and Generic Systems Symbols, was developed by the ecologist Howard T. Odum and colleagues in the 1950s during studies of the tropical forests funded by the United States Atomic Energy Commission. They are used to compose energy flow diagrams in the field of systems ecology