implementation of a saas based simulation platform using open standards and open source software...
DESCRIPTION
Slideshow presented at the 12th Product Data Exchange NASA/ESA workshop - May, 18-21 2010, Oslo - NorwayTRANSCRIPT
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Implementation of a SaaS based simulation platform using open standards and open source software.
12th NASA-ESA Workshop on Product Data ExchangeJotne, May,18th – May, 20th 2010, Oslo - Norway
Thomas Paviot (Supméca)*, Jelle Feringa (TU Delft)***[email protected]; **[email protected]
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12th NASA/ESA Workshop on Product Data Exchange 2May 2009, 19th
Agenda
The pythonOCC project: a python library for CAD/CAE development
CAD services A Service oriented architecture intended to
design and simulation exchanges Demo Questions
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The diagnostic : poor end-user computing capabilities with CAD softwares
12th NASA/ESA Workshop on Product Data Exchange 3May 2009, 19th
CAD softwareEnd-user level(VB scripting,VB automation)
Modeling kernelDeveloperLevel (C++)
End-user computing?
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What we did (2008->2009 - PDE2009)
12th NASA/ESA Workshop on Product Data Exchange 4May 2010, 19th
Developerlevel
pythonOCCA python library for CAD/CAE
Features: 2D/3D modeling Data Exchange
(STEP/IGES/STL) Basic GUI features
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Features recently added (2009->2010)
12th NASA/ESA Workshop on Product Data Exchange 5May 2010, 19th
Meshing features (Quad, triangles, 2D and 3D)
Parametric modeling features
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Current work Making pythonOCC being interoperable with other
components of the IT system: STEP file format is supported Strong, robust, well defined workflows to support the
exchange of STEP files Additional need for deeper integration and a more
dynamic solution Our current objective:
Use the webservices and SOA technologies to connect software components (high abstraction level, clear separation between the service and the implementation)
Rely on free and open source softwares : open source = open semantics Less licensing issues (data are exchanged but licenses are also
propagated through the system)
The process : add cadservices to pythonOCC, add public SOA layer to non-service oriented softwares
12th NASA/ESA Workshop on Product Data Exchange 6May 2010, 19th
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CAD services
12th NASA/ESA Workshop on Product Data Exchange 7May 2010, 19th
What is a CAD service? A remote procedure call that holds CAD semantics
Granularity of CAD services? Low level Brep topology services: create_vertex,
create_edge, create_face etc. Mid-level design function services: make_extrusion,
make_revolution, make_pipe, boolean_fuse etc. High level templated CAD services: make_car(wheels=4,
automatic_gear_box=True etc.) Standardization of CAD Services?
OMG CAD Service, 2001 : not much granular – frozen project?
STEP AP203ed5 produral design and parametric representation could be mapped to webservices
Difficult to standardize any kind of service whereas needs can not be standardized in a general way.
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Use case: the « cell table » (Vivid Gallery, Rotterdam)
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Use case: the « cell table » designed with pythonOCC
12th NASA/ESA Workshop on Product Data Exchange 9May 2010, 19th
The problem to solve : what is the rigidity of the table?
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The SaaS design/simulation environment A set of business servers (SOAP servers) One controller to synchronize (clients)
12th NASA/ESA Workshop on Product Data Exchange – pythonOCC/STEP-PLCS framework 10May 2010, 19th
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The implementation
12th NASA/ESA Workshop on Product Data Exchange – pythonOCC/STEP-PLCS framework 11May 2010, 19th
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Demo (1/3): launching central component
11th NASA/ESA Workshop on Product Data Exchange – pythonOCC/STEP-PLCS framework 12April 2009, 29th
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Demo (2/3): automated meshing with Salomé
11th NASA/ESA Workshop on Product Data Exchange – pythonOCC/STEP-PLCS framework 13April 2009, 29th
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Demo (3/3): simulation with code-aster
11th NASA/ESA Workshop on Product Data Exchange – pythonOCC/STEP-PLCS framework 14April 2009, 29th
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Conclusion
Benefits Dynamic programming Multi-platform Agile CAD/CAE development Use a wide range of other free and open source
libraries
12th NASA/ESA Workshop on Product Data Exchange – pythonOCC/STEP-PLCS framework 15May 2010, 19th
The use of open source software and open standards is suitable for the implementation of webservices dealing with CAD and simulation
Further information : http://www.pythonocc.org