Development of Product Model Data Exchange Between Different 3D CAD Systems in Japanese Shipyards

2015 ◽  
Author(s):  
T Hiraki ◽  
◽  
T Hirayama ◽  
Y Ohtsuki ◽  
K Maeda ◽  
...  
Keyword(s):  
Data Exchange ◽  
Model Data ◽  
Product Model ◽  
Cad Systems ◽  
3D Cad

scholarly journals Feature-based translation of CAD models with macro-parametric approach: issues of feature mapping, persistent naming, and constraint translation

2020 ◽  
Vol 7 (5) ◽  
pp. 603-614 ◽  
Author(s):  
Mutahar Safdar ◽  
Tahir Abbas Jauhar ◽  
Youngki Kim ◽  
Hanra Lee ◽  
Chiho Noh ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Parametric Approach ◽  
Model Data ◽  
Feature Mapping ◽  
Product Model ◽  
Cad Systems ◽  
Cad System ◽  
Cad Models ◽  
Feature Based ◽  
Aided Design

Abstract Feature-based translation of computer-aided design (CAD) models allows designers to preserve the modeling history as a series of modeling operations. Modeling operations or features contain information that is required to modify CAD models to create different variants. Conventional formats, including the standard for the exchange of product model data or the initial graphics exchange specification, cannot preserve design intent and only geometric models can be exchanged. As a result, it is not possible to modify these models after their exchange. Macro-parametric approach (MPA) is a method for exchanging feature-based CAD models among heterogeneous CAD systems. TransCAD, a CAD system for inter-CAD translation, is based on this approach. Translators based on MPA were implemented and tested for exchange between two commercial CAD systems. The issues found during the test rallies are reported and analyzed in this work. MPA can be further extended to remaining features and constraints for exchange between commercial CAD systems.

PDES/STEP: A Status Report

1992 ◽  
Author(s):  
Steven A. Ryan
Keyword(s):  
Data Exchange ◽  
Status Report ◽  
Model Data ◽  
Product Model ◽  
Basic Premise ◽  
Strong Basis ◽  
International Standard ◽  
Current State ◽  
Step Step ◽  
Product Definition

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.

Evolution of STEP (ESTEP): Exchange of Shipbuilding Product Model Data

2001 ◽  
Vol 17 (03) ◽  
pp. 151-160
Author(s):  
B. Gischner ◽  
B. Kassel ◽  
P. Lazo ◽  
R. Wood ◽  
J. Wyman
Keyword(s):  
Data Model ◽  
Data Exchange ◽  
Spatial Configuration ◽  
Current Status ◽  
Cycle Phase ◽  
Plant Design ◽  
Model Data ◽  
Product Model ◽  
Shipbuilding Industry ◽  
Application Protocols

Evolution of STEP (ESTEP) is a task within the MARITECH-ASE Integrated Shipbuilding Environment (ISE) Project building upon the work of the MariSTEP consortium and the NIDDESC standards development efforts. The purpose of ESTEP is to validate product model standards for the shipbuilding industry, implement product model data translators, and to further the development of Shipbuilding Application Protocols. Three of the major goals of ESTEP are developing a production-quality ship structure data exchange capability, expanding shipbuilding piping implementation efforts, and the exchange of parts and part libraries. Piping applications between the plant design industry and the shipbuilding industry are similar, and the AP used for translation of plant piping data (AP227–Plant Spatial Configuration) is much further along in the ISO process than the ISO Shipbuilding Piping AP (AP217). Both application protocols have been analyzed to determine the feasibility of using the plant AP as the ISE piping data exchange model. Shipbuilding structures will be expanding on the MariSTEP implementation that was based on a subset of the detail design data model. This will include the development of a STEP conformance class, a subset of the data model that covers a particular ship life-cycle phase or business case. Parts and part libraries are a joint effort with the ISE Electronic Commerce (EC) task to define an exchange mechanism. The critical need for such a mechanism was identified early in the MariSTEP exchange effort. ESTEP plans to exchange library part definitions, including geometric, parametric, and nongraphic attribute data. The current status, the achievements, and the future implementation plans of the ISE ESTEP are reviewed in this paper.

Computation of Parametric Space Curves From Real Space Curves for the Data Exchange Between Heterogeneous CAD Systems

1998 ◽  
Author(s):  
Yong-Gu Lee
Keyword(s):  
Data Exchange ◽  
Real Space ◽  
Practical Issue ◽  
Model Data ◽  
Base Surface ◽  
Cad Systems ◽  
The Real ◽  
Parametric Space ◽  
Additional Information ◽  
Space Curves

Abstract There are many obstacles in exchanging model data between different CAD systems. One of them is that some CAD systems refuse to supply parametric space curves when sending a model data to other CAD systems. Parametric space curves are omitted because in many cases they are additional information to the real space curves. Parametric space curves can be essential in many geometric computations such as surface triangulations. Thus a practical issue of computing parametric space curves from real space curves and the base surface is discussed. The input geometric types are those that are defined in Part 42 of STEP. They are rich enough to cover most geometric types used in CAD systems. For the output geometric types, NURBS form is used since it is the most popular form for representing curves and surfaces.

Status, Comparison, and Issues of Computer-Aided Design Model Data Exchange Methods Based on Standardized Neutral Files and Web Ontology Language File

2016 ◽  
Vol 17 (1) ◽  
Author(s):  
Yuchu Qin ◽  
Wenlong Lu ◽  
Qunfen Qi ◽  
Xiaojun Liu ◽  
Yanru Zhong ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Data Exchange ◽  
Cad Model ◽  
Web Ontology Language ◽  
Model Data ◽  
Cad Systems ◽  
Ontology Language ◽  
Depth Analysis ◽  
Computer Aided ◽  
Aided Design

Exchanging computer-aided design (CAD) model data among heterogeneous CAD systems is indispensable for collaborative product development. Currently, the industry mainly uses the standardized neutral files-based methods to implement such exchange. While at the same time, the application of web ontology language (OWL) file and underlying semantic web technologies in CAD model data exchange is gaining importance and popularity within the academia. The coexistence of different types of methods has generated a series of controversies and questions within the industry and the academia. Yet, can the neutral files-based exchange methods completely implement model data exchange among heterogeneous CAD systems? What challenges have been addressed to date by the developed CAD model data exchange standards? Why OWL has been introduced to CAD model data exchange? Does CAD model data exchange really need OWL? Are there any issues in existing neutral files-based exchange methods and OWL file-based exchange methods need to be addressed in future studies? This paper proposes to conduct a study of the standardized neutral files-based exchange methods and OWL file-based exchange methods. An in-depth analysis of the widely used standard for the exchange of product model data (STEP) method and the newly emerging OWL methods is first provided. Then, the paper makes a detailed comparison between these two types of methods based on this analysis. Finally, some issues in the two types of methods that need to be addressed in the future are discussed.

The NIDDESC Ship Product Model: The STEP Solution

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.

NIDDESC—Enabling Product Data Exchange for Marine Industry

1994 ◽  
Vol 10 (01) ◽  
pp. 24-30
Author(s):  
James Murphy
Keyword(s):  
Data Exchange ◽  
Production Control ◽  
Life Support ◽  
Design Tool ◽  
Digital Data ◽  
Model Data ◽  
Product Model ◽  
Product Data ◽  
Information Base ◽  
Marine Industry

The use of computer-aided design (CAD) technology in the U.S. Navy and marine industry has evolved from a drafting-based design tool to a three-dimensional (3D) product-oriented information base, used for design, production and service life support. One of the most significant enhancements to current CAD technology has been the incorporation or integration of non-graphic attribute information with traditional graphics data. This expanded information base or product model has enabled the marine industry to expand CAD use to include such activities as engineering analysis, production control, and logistics support. While significant savings can be achieved through the exchange of digital product model data between different agents, current graphics-based CAD data exchange standards do not support this expanded information content. The Navy/Industry Digital Data Exchange Standards Committee (NIDDESC) was formed as a cooperative effort of the Naval Sea Systems Command (NAVSEA) and the National Shipbuilding Research Program to develop an industry consensus on product data and to ensure these industry requirements are incorporated into national and international data exchange standards. The NIDDESC effort has resulted in the development of a suite of product model specifications or application protocols (APs) defining marine industry product model data. These APs have been submitted for inclusion into the next generation of data exchange standards.

Product Model for Gear Units

2003 ◽  
Author(s):  
B.-R. Hoehn ◽  
K. Steingroever ◽  
M. Jaros
Keyword(s):  
Data Exchange ◽  
Load Capacity ◽  
Product Model ◽  
Cad Systems ◽  
The Public ◽  
Related Data ◽  
Iso 10303 ◽  
Definition Of ◽  
Capacity Data ◽  
A Company

During the last years it has become more and more common practice in the gear industry to exchange gear data electronically between the different parties. Up to now the format of the gear data is usually DXF, IGES or a company-specific format. A common format, which includes not only geometry data, but also load capacity and other gear-related data, was not available. Therefore a product model for gear units was developed at the FZG (Forschungsstelle fuer Zahnraeder und Getriebebau). The main goal was the realization of the data exchange between gear calculation programs, CAD-systems and a central storage of all gear data. This product model covers all kinds of gear data like gear geometry, load capacity data, lubricant data, manufacturing data, etc.. The product model for gear units is based on the application protocol AP 214 of ISO 10303 STEP. This application protocol was originally created to describe the design process of the automotive industry and does not have a sufficient definition of gear data. An extension of an existing application protocol causes time consumptive normative procedures. Therefore the structure of the product model for gear units is independent from ISO 1030-214. It consists of a mechanism, which defines a data structure acc. to ISO 10303-214, but adapted to the product model for gear units. The product model gives a description how to use ISO 10303-214 for the application of gear units. Meanwhile this product model for gear units is published as a VDMA-paper and therefore open to the public. The first successful application is the data exchange between gearcalculation programs of the FVA and CAD-systems. By this new format the data exchange of gear data is now extremely simplified.

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