[ Back ]   [ More News ]   [ Home ]
July 19, 2004
JT Open Initiative Continues To Attract New Members
Please note that contributed articles, blog entries, and comments posted on MCADcafe.com are the views and opinion of the author and do not necessarily represent the views and opinions of the management and staff of Internet Business Systems and its subsidiary web-sites.
Jeff Rowe - Managing Editor

by Jeff Rowe - Contributing Editor
Each MCAD Weekly Review delivers to its readers news concerning the latest developments in the MCAD industry, MCAD product and company news, featured downloads, customer wins, and coming events, along with a selection of other articles that we feel you might find interesting. Brought to you by MCADCafe.com. If we miss a story or subject that you feel deserves to be included, or you just want to suggest a future topic, please contact us! Questions? Feedback? Click here. Thank you!

JT Open Initiative Continues To Attract New Members

UGS, has announced the addition of six new members to the JT Open initiative, building on the strong momentum established since its initial launch in November 2003. Four new corporate members -- automakers DaimlerChrysler and Renault, along with auto supplier Visteon and heavy equipment manufacturer Caterpillar -- join an expanding list of global manufacturers already participating in JT Open. PLM software providers Theorem Solutions and Opticore have also signed-on, adding to the growing set of JT Open vendor members.

"The momentum and energy behind JT Open is encouraging," said Ed Miller, president of CIMdata. "Companies considering a PLM initiative need to adopt a clear strategy for interoperability or they will risk compromising their company's competitiveness. UGS' PLM Open business model has gained significant industry visibility, and represents UGS' strategy for helping companies leverage multiple technology investments to structure their collaborative product development environment."

As the newest corporate members of JT Open, DaimlerChrysler, Renault, Visteon and Caterpillar join a growing group of global manufacturers seeking to remove technology barriers in their product development processes.
  • "It is critical to the success of the automotive industry that we eliminate all impediments to productivity caused by incompatible technologies," said Ulrich Ray, Director Development MB Passenger Cars-Information Technology, IT-Processes and Standardization for DaimlerChrysler. "Open solutions based on generally accepted data formats will benefit all manufacturers and the JT Open initiative is helping to further this common objective."
  • "We applaud the JT Open initiative for promoting the concept of open technology to facilitate enhanced communication and collaboration in the global manufacturing industry," said Francois Pistre, IT executive for Renault. "We look forward to working with all of the JT Open members to improve open communication throughout our collective product lifecycle processes."
  • "Becoming a JT Open member makes good business sense for any manufacturer in the automotive industry," said Lorie Buckingham, Senior Vice President and Chief Information Officer, Visteon. "As the first major automotive supplier to join JT Open we are looking forward to working with the other members to help define collaborative processes around JT and to gain business value from its use."
  • Theorem Solutions and Opticore announced their respective status as JT Open vendor members earlier this year.

    "The addition of these prestigious industry leaders to the already impressive list of companies participating in JT Open is further validation of the business value of this innovative initiative," said Bruce Feldt, vice president of Open Tools for UGS. "JT Open's growing momentum also serves as evidence that its unique industry partnership model can successfully unite diverse manufacturers and suppliers around an open forum for the benefit of the PLM industry."

    JT Open is an initiative driven by global leaders that view PLM as a competitive advantage and have adopted the "JT" data format as a standard. JT is a common data format for enabling product visualization and information sharing between PLM software applications. The robust functionality and lightweight nature of JT technology makes it possible to view and share product data and interactive images worldwide, in real-time and throughout all phases of the product lifecycle.

    Membership in JT Open is available to any and all end user corporations, independent software vendors (ISVs), academic institutions and non-profit industry organizations. In addition to the six new members announced today, initial JT Open members announced in November include UGS, General Motors, Ford, Mazda, PTC, Alias, and Actify, as well as academic members Brigham Young University, Technical University Darmstadt, Shanghai Jiao Tong University, and the University of Michigan. In addition, many other companies that derive indirect value from the initiative participate as JT Open advocates. JT Open advocates include HP, Intel, SAP, Tecnomatix, CIMx and Elysium.

    JT Open is not an attempt to create a standard, such as STEP or IGES - those formats address different requirements, namely interoperability. JT is a format tailored for multi-cad data-sharing, based on the high-definition, small footprint, visual, and optional precise (b-rep) information. There are several important differences between this and other available visualization/representation technologies.

    The JT Open Toolkit (used for creating JT-formatted data) is a C++ library and is available for several hardware and operating system platforms, including Windows, SUN, HP, SGI, and AIX. Software product development organizations have developed translators from many of the popular MCAD systems into JT. It is nearly always the only format common to the major applications that might be used in an enterprise. JT data can be very lightweight, holding little more than facet data or it can be richer and hold associations to the original CAD information, assemblies, product structure, geometry, attributes, meta data and PMI. It supports multiple tessellations and level-of-detail generation.

    When the JT Open Toolkit exports a model, the toolkit creates one or more DirectModel files, referred to as "JT files" with a ".jt" file extension. JT files represent a flexible data format, capable of storing:
  • Directly renderable geometry
  • Analytical geometry
  • Geometric attributes
  • User metadata
  • Hierarchical CAD product structure
  • The relationship of product structure hierarchy to exported JT file structure is arbitrary. Any node in the hierarchy can be specified as the start of a new JT file. Thus, product structure can be represented in a variety of JT file configurations. For convenience, JT Open Toolkit defines three common product structure-to-file structure mappings. These include:
  • Per part - All assembly nodes in a product structure hierarchy are stored in a single JT file, and each part node in the hierarchy is stored in an individual JT file in a subdirectory that is of the same name as the assembly JT file.
  • Fully shattered - Each product structure node in the hierarchy is stored in an individual JT file.
  • Monolithic - All product structure is stored in a single JT file.
  • To help shrink the storage and transmission bandwidth requirements of 3D models, JT files can be compressed. The compression is transparent to a JT data user, and a given model can be composed of JT files using different compression settings (including none). The compression form used by a JT file is related to the JT file format version in which it was written.

    Although less than a year old, JT Open is becoming an influential community of users, software vendors, and other parties across the PLM chain who, through an open distribution of the JT technology under an equitable business model, are able to share 3D data for the purposes of visualization, collaboration, and data-sharing. To date, the JT data format has seen its most widespread use in the automobile and aerospace industries, but is equally suitable for all manufacturing industry segments. According to the organization, today there are over 35,000 JT-enabled sites worldwide, representing but a fraction of the potential market. Current industry thinking is that for every 3D CAD seat
    deployed there are 20-30 end-users who can make use of the data in the context of visualization and interrogation using less expensive applications on less expensive hardware. A recent estimate of the global 3D CAD installed base (~1.8M) puts the opportunity for JT-enabled applications at well over 36 million seats. Sounds like pretty good potential, doesn't it?

    D-Cubed Releases New Hidden Line Manager and Collision Detection Manager Products

    UGS and its D-Cubed subsidiary have announced the availability of new releases of two of D-Cubed's component software products. The new releases of both Hidden Line Manager (HLM) version 31.0 and Collision Detection Manager (CDM) version 31.0 contain several new enhancements to improve function and performance.

    New enhancements to D-Cubed's Hidden Line Manager (HLM), precise hidden line technology, include:

    Annotation support - Applications can now specify that geometry should never be hidden by other faces or parts. This enables applications to add annotation geometry to the HLM model and determine precisely how it is displayed. The model below, for example, consists of three elements: a cylinder, a block and a wire edge that represents the projected cylinder axis. This particular annotation of the cylinder axis is achieved by specifying that the wire edge should not be hidden by the cylinder. The new functionality joins a suite of tools - including model outline detection and intersection curve visualization - that makes the HLM a solution for technical illustration applications.

    Face visibility hints - In certain circumstances, applications may have prior knowledge about the visibility status of some of the faces in a model. For instance, an inaccurate hidden line technology used for fast visualization on large models, such as a z-buffering technique, can determine that some faces are not visible in a particular view. It is now possible for an application to provide such information to the HLM in order to accelerate the calculation of an accurate hidden line view of an entire model.

    Improved boxing - For each part in an assembly, applications that employ HLM can specify a box that completely encloses a part. The HLM uses boxes to reduce the time it takes to compute a hidden line view. Generally, the more closely the box matches a part, the better the possible performance gain. In previous releases, only axis-aligned boxes were permitted. It is now possible to specify an axis-aligned box that has been transformed to enclose a part more precisely.

    The new enhancements to D-Cubed's latest release of its Collision Detection Manager (CDM), the leading interactive collision detection and clearance computation component for accurate models in assembly environments, include:

    Identification of touching entities - The CDM previously only detected those collisions where the colliding bodies share a common volume. This is not the case when entities are touching - previously, such cases were ignored. In this release the CDM has been extended to enable applications to detect any entities that are touching, as well as those that interpenetrate.

    Faster computation of touching solutions between moving parts - When the CDM is used for interactive collision detection between moving parts, collision checks are systematically performed as the parts are moved through a series of small but discrete steps. When moving parts collide, they will generally have moved from a non-colliding state to an interpenetrating state in a single step. Applications can then request the CDM to determine the exact positions at which the two parts would touch. The new release implements more sophisticated algorithms to speed up this calculation. The original function used a bi-section algorithm that often required many steps to converge on the touching
    solution. The new algorithm is much more efficient, requiring very few steps without any compromise on reliability. Among other applications, the computation of touching solutions between colliding parts is useful for presenting possible face mating conditions to the end-user.

    Improved boxing - For each part in an assembly, applications can specify a box that completely encloses a part. The CDM uses boxes to reduce the time taken to compute collisions. Generally, the more closely the box matches a part, the better the possible performance gain. In previous releases, only axis-aligned boxes were permitted. It is now possible to specify an axis-aligned box that has been transformed to enclose a part more precisely.

    The HLM and CDM technologies were both first released in 1999 and have enjoyed widespread adoption across the MCAD spectrum, providing many core capabilities. The HLM is one of the most widely deployed hidden line methods in the CAD industry According to D-Cubed, its kernel independence lets a dedicated team of experts focus exclusively and continuously on the development of its advanced hidden line algorithms without being distracted by the wider requirements of a general solid modeling technology. Since its initial release, CDM has achieved broad market acceptance, particularly with mainstream mechanical CAD applications, including Autodesk Inventor, Solid Edge, and SolidWorks, among
    several others. CDM's success is largely due to its range of clever algorithms specifically designed to detect collisions and compute clearances on accurate solids in an interactive assembly environment, rather than being derived from the traditional - and unnecessarily computationally intensive - Boolean approach. Commonly used in conjunction with D-Cubed's 3D DCM assembly-part-positioning and kinematic-solving component, the CDM provides interaction with assembly models with a greater sense of realism and solidity, eliminating design errors and failures caused by interpenetrating parts.

    Jeffrey Rowe is the editor and publisher of MCADCafé and MCAD Weekly Review. He can be reached at
    Email Contact or 408.850.9230.

    This Week

    Top Stories
  • UGS' D-Cubed Subsidiary Announces Availability of the Latest Releases of its Hidden Line Manager and Collision Detection Manager Products
  • DaimlerChrysler, Renault, Visteon And Caterpillar Become Latest Corporate Members Of JT Open Initiative
    Product and Company News
  • Solid Edge Launches Virtual Studio+ With Version 16
  • DaimlerChrysler Selects NX Nastran From UGS
  • ANSYS Takes Automated Rotating Machinery Meshing Tool To Next Level
  • UGS Announces Availability Of New Teamcenter Multi-CAD Engineering Collaboration Solution
  • EDS Desktop Services Go "Virtual"
  • UGS Announces Family Of Products And Enhancements Enabling Interoperability With CATIA V5
  • New DEVISE Solution From ISE Powered By Spatial's 3D ACIS Modeler
  • UGS Announces Availability of New Teamcenter Sourcing Capabilities
  • PlassoTech Announces AutoDesk Inventor 9 Certification of 3G.Design Simulation/Optimization Suite
  • Raytheon Space And Airborne Systems Expands Commitment To NX Digital Simulation
  • Synergis Adept Provides Comprehensive Data Management Support For SolidWorks 2005
  • New CATIAV5-To-Windchill Productview Translator Brings Full Functionality Benefits To OEMs And Suppliers
  • Autodesk Teams with Trane, GeoPraxis, and Elite Software to Link Design and Engineering Analysis Applications
  • UGS Announces Largest-Ever Nordic Contract
  • ANSYS To Release Q2 Earnings
  • Cimmetry Ships AutoVue 18
  • Delcam To Feature New Design Solution At Kunststoffe Exhibition
  • UGS Introduces NX Managed Development Environment
  • Camstar And Other Industry Leaders To Address Emerging Trends In Electronics Manufacturing
  • New OPS Hailed As "Most Powerful Plastics Selection Tool Ever Built" With Integrated IDES Database
  • CNC Software's 20th Anniversary
  • UGS Launches New Version of E-factory Jack, Its Human Simulation And Ergonomics Analysis Software
  • Cadpo Announces A Free SolidWorks 2005 Update Course In i.get.it
  • New Version of ESI Group's Foundry Simulation Software Optimizes Casting Design
  • MSC.Software Announces Availability of MSC.MasterKey Licensing System for University Customers
  • Design Project Estimation Tool (DPET) - Dramatically Improves Your Engineering Project Time Estimation Accuracy
  • UGS Re-brands Software Grant Program As GO PLM
  • 3D Systems Announces Conference Call And Webcast To Discuss Financial Results
  • Four University Teams Win SolidWorks' 3D Design & Analysis Award For Race Car Designs At Formula Student Competition
  • Delcam Software Helps Keep Nissan On Top
  • Advances In Fatigue Analysis Software From Safe Technology
  • Cadpo Announces 1,000th SolidWorks i.get.it eLearning Subscription Sold
  • PAM-CEM Solutions 2004 Reduces Physical Tests in Automotive Electromagnetic Compatibility
  • Nissan Diesel Develops Vehicle Configuration Management System With PLM Solutions From IBM and Dassault Systèmes
  • Hyundai Heavy Industries Switchgear Operations Selects UGS as Its PLM System Provider
  • ETRAGE LLC Announces The Release Of Web Access And Batch Processing For PSI - Plot Service For Pro/INTRALINK
  • Autodesk Expands Russian Operations To Support Growing Customer Base
  • Moldflow Corporation To Present At Adams, Harkness & Hill Annual Summer Seminar
  • MatrixOne To Release Q4 And FY 2004 Financial Results
  • IMSI And Thomas Industrial Network Partner To Offer Access To the World's Most Extensive, On-Line, CAD Related Parts, Symbols And Components Resource
  • Delcam To Launch New Jewelry Design And Manufacturing Software At IJL
  • Moldflow To Release Q4 and FY2004 Financial Results
    Related MCAD News
  • Fitch Comments On EDS
  • EDS Comments On Moody's Downgrade
  • Delphi Forms Consortium To Validate Welding Technology
  • IBM Changes Economics Of UNIX Computing
    Upcoming Events
  • Altair Engineering Announces 2nd Annual Optimization Technology Conference And Call For Presentations
  • Avatech Solutions Announces AutoCAD 2005 Webcast Series
  • MSC.Software To Host Q2 Earnings Conference Call And Webcast
  • ESI Group To Host Worldwide Conferences For Virtual Engineering
  • ANSYS CEO To Represent Western PA Technology Sector At National Ernst & Young Entrepreneur Of The Year 2004 Awards
  • Moldflow Corporation to Present at Adams, Harkness & Hill 24th Annual Summer Seminar

    You can find the full MCADCafe event calendar here.

    To read more news, click here.

    -- Jeff Rowe, MCADCafe.com Contributing Editor.