Special Issue on Product Model and International Standard STEP for CAD Data Exchange. STEP Application Protocol and its Development.

Abstract This status report provides a current overview of the work that is progressing toward the development of an international Standard for the Exchange of Product model data (STEP). STEP has the potential for revolutionizing the exchange of product definition data. The current state of the art in product data exchange requires knowledge of both the sending and receiving system in order to expect a reliable exchange to occur. The basic premise that STEP is built upon is to support the exchange and sharing of product model data without the need to know the sending or receiving system. The first release of STEP as a Draft International Standard will occur in 1992. The capability of that release will provide a strong basis for system designers and integrators to develop STEP compliant products that can support a significant portion of the product definition data that is exchanged today between and within businesses.

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The NIDDESC Ship Product Model: The STEP Solution

Journal of Ship Production ◽

10.5957/jsp.1994.10.1.39 ◽

1994 ◽

Vol 10 (01) ◽

pp. 39-50

Author(s):

Richard H. Lovdahl ◽

Douglas J. Martin ◽

Michael A. Polini ◽

Ron W. Wood ◽

Michael L. Gerardi ◽

...

Keyword(s):

Data Exchange ◽

Digital Data ◽

Model Data ◽

Product Model ◽

International Standard ◽

Layered Architecture ◽

Approach Goals ◽

Step Standard

This paper presents the purpose, approach, goals and progress of the tasks that make up the standard for a digital Ship Product Model. The Navy/Industry Digital Data Exchange Standards Committee (NIDDESC) Standards will be a part of the Standard for the Exchange of Product Model Data (STEP) International Standard. The STEP standard has a layered architecture in which basic core definitions are used by many industry and product specific standards such as the NIDDESC Standards.

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Development of STEP Ship Model Database and Translators for Data Exchange Between Shipyards

Journal of Ship Production ◽

10.5957/jsp.1997.13.2.111 ◽

1997 ◽

Vol 13 (02) ◽

pp. 111-124

Author(s):

Jeff Wyman ◽

Dan Wooley ◽

Burt Gischner ◽

Joyce Howell

Keyword(s):

Data Exchange ◽

Transfer Mechanism ◽

Model Data ◽

Product Model ◽

Global Marketplace ◽

Shipbuilding Industry ◽

International Standard ◽

Ship Model ◽

Model Database ◽

Application Protocols

Effective data exchange of product model data is essential for future competition in the global marketplace. Many efforts have been undertaken in recent years to establish a transfer mechanism for product model data in the Shipbuilding industry. These include the development of the STEP Standard, creation of the NIDDESC Application Protocols, and efforts of the European NEUTRABAS and MARITIME Projects. The ARPA/MARITECH Project for "Development of STEP Ship Product Model Database and Translators for Data Exchange Between Shipyards" provides a unique opportunity to attempt to implement the still developing Standards for Product Model Exchange and to enable their use for data exchange between the major US Shipyards. The project will create and populate a prototype product model database, develop translators for exchange of product model data between Shipyards, and facilitate adoption of the Shipbuilding Application Protocols as part of the emerging International Standard (STEP). These ambitious goals are being undertaken by a consortium of US Shipbuilders, their CAD vendors, and STEP experts. The participants will help develop a product model data exchange capability for the entire Shipbuilding industry, while they enhance their own ability to compete in the global marketplace.

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Semantic Interoperability of GD&T Data Through ISO 10303 Step AP242

Volume 2B: 42nd Design Automation Conference ◽

10.1115/detc2016-60133 ◽

2016 ◽

Cited By ~ 2

Author(s):

Adarsh Venkiteswaran ◽

Sayed Mohammad Hejazi ◽

Deepanjan Biswas ◽

Jami J. Shah ◽

Joseph K. Davidson

Keyword(s):

Data Exchange ◽

Smart Manufacturing ◽

Context Model ◽

Product Model ◽

Shape Information ◽

Computer Aided Process Planning ◽

Model Based ◽

Computer Aided ◽

Iso 10303 ◽

Manufacturing Applications

Industries are continuously trying to improve the time to market through automation and optimization of existing product development processes. Large companies vow to save significant time and resources through seamless communication of data between design, manufacturing, supply chain and quality assurance teams. In this context, Model Based Definition/Engineering (MBD) / (MBE) has gained popularity, particularly in its effort to replace traditional engineering drawings and documentations with a unified digital product model in a multi-disciplinary environment. Widely used 3D data exchange models (STEP AP 203, 214) contains mere shape information, which does not provide much value for reuse in downstream manufacturing applications. However, the latest STEP AP 242 (ISO 10303-242) “Managed model based 3D engineering” aims to support smart manufacturing by capturing semantic Product Manufacturing Information (PMI) within the 3D model and also helping with long-term archival. As a primary, for interoperability of Geometric Dimensions & Tolerances (GD&T) through AP 242, CAx Implementor Forum has published a set of recommended practices for the implementation of a translator. In line with these recommendations, this paper discusses the implementation of an AP 203 to AP 242 translator by attaching semantic GD&T available in an in-house Constraint Tolerance Graph (CTF) file. Further, semantic GD&T data can be automatically consumed by downstream applications such as Computer Aided Process Planning (CAPP), Computer Aided Inspection (CAI), Computer Aided Tolerance Systems (CATS) and Coordinate Measuring Machines (CMM). Also, this paper will briefly touch base on the important elements that will constitute a comprehensive product data model for model-based interoperability.

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