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Your CAE Partner for Success

User Trends and Priorities :User Trends and Priorities :CAE Vertical Applications and ProcessesCAE Vertical Applications and Processes

Fred Mendonça, CD-adapco, London ([email protected])

AUTOSIM Technology Workshop, Paris, 5th July 2007

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What do We Mean by CAE Workflow/Process?

= information being interpreted and re-entered

(From John Givens [GM] @ Daratech Summit 2002)

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Surveys!

• “Eats Shoots and Leaves”– INTERPRETATION 1 – culinary habits of a Giant Panda– INTERPRETATION 2 – action of a murderous dinner guest

• CD-adapco surveys– Customer satisfaction survey

» A large survey (size matters)- Amongst 6000 users- Aiming for 10% return

– Priority, Process and Trends survey» A Targeted survey (size doesn’t matter, it’s how you use it)

- Subject of today’s presentation- Interpretation and follow-up

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CD-adapco Customer Survey of Priorities and Trends (Interim snapshot of an ongoing effort)

• Who– Engineering Directors, Senior Engineering Managers (typically 20

staff)– Auto OEMs and 1st tier suppliers: Ford, DaimlerChrysler, Audi, BMW,

BEHR, Perkins• Why

– Helps us to understand CAE structures and needs– Assures the Client that we continue to understand their needs/process– Helps us gear up to meet (and perhaps even DRIVE) expectation

• What– 10 questions (based on a CPDA survey – see next slide)

» Takes 15 minutes to fill in• How

– Targeted respondees– We reply with a visit and discuss details with respondee and key staff

» The true value in the exercise – working practices, and tools

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CPDA CAE Trends Survey

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Feedback - headlines

• Priorities– 100% identify ‘Drive Design from Analysis’ as top priority– 50% ‘Capturing Analysis Knowledge’ as 2nd priority– 65% ‘Bridging the gap between Requirements and Performance’ as 3rd

• Processes– 65% are content with a directory structure for file management– 65% claim a semi-automated link between CAD and CAE– 100% perform idealization of CAD in the CAE system– 85% believe ‘Up-front analysis’ to be the most critical phase in design – All respondees touched on Optimisation

• CFD-centric– Comprises 33% of Engineering analysis as a whole– and 42% of all CAE– Automated meshing scores 9.3 out of 10 as critical to

Design/Simulation framework

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Feedback - details

• Priorities (from survey)– 1 - ‘Drive Design from Analysis’– 2 - ‘Capturing Analysis Knowledge’

• Different approaches in Western and Far-east practices.– In Japan, ‘Capturing Analysis Knowledge’ seems to take the

top priority» Follows through in processes, working practices and recruitment» Advantages and difficulties

- Minimizes (human factor) ‘variations’ among users- Minimizes training requirements- Difficult to change the process quickly when the need arises

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Feedback - details

• Processes– 65% are content with a directory structure for file management– 65% claim a semi-automated link between CAD and CAE– 100% perform idealization of CAD in the CAE system

• CAD and CAE have been around for a long time – why are they not more closely integrated?

– Operators have different skills and knowledge– Often located in different offices and are employed under

different contract arrangements– Different CAE types require different detail of

component/geometry interaction– Analysis ‘too complex’ for CAD operators– CAD systems ‘too complex’ for analysts

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Feedback - details

• CFD-centric– Comprises 33% of Engineering analysis as a whole– and 42% of all CAE– Automated meshing scores 9.3 out of 10 as critical to

Design/Simulation framework

• CFD is already a significant, and growing, area– Need for Automatic Meshing is clearly stated– Native CAD embedding of CAE is seen as important and

may be a route to answer this need

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Feedback – CAD usage

• Needs– Automated model construction– Fast and Accurate CAE models– Easily modified designs

– Our CAD embedded CAE has 80% user coverage to date

19%

19%

14%11%

11%

9%

9%8%

CA TIA V 5P ro/E ngineerN/AUnigraphics NXS olidW ork sS TA R-Des ignI-DE A SCA TIA V 4

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Feedback - Challenges

• CD-adapco Client Survey 2006 – typical resource allocation

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Pipeline

• CAD > Surface preparation > Volume meshing > Solution

• Geometry modification (flap rear element)

Wrap surface

Wrap surface

Re-mesh if necessary

Re-mesh if necessary

Trim CellMesher

Trim CellMesher

Prism Layer

Prism Layer CAD Flow

Solution

Flow Solution

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Enabling Technologies – CAD embedding

• CAD embedding– Fully integrated CFD for non-experts – ideal design tool

» CATIAv5, ProEngineer, UnigraphicsNX, SolidWorks– Fully associative, where modifications to the CAD feed through

automatically into the CFD process through to Solution– Best practices for CAD-embedded CFD on www.cd-adapco.com

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Enabling Technologies – Surface wrapping

• From unclean CAD– Holes closure– Overlap and intersection handling– Extreme detail – feature removal

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Enabling Technologies – Polyhedra

• Re-mesh surface for optimal volume mesh

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Enabling technologies - Morphing

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Integrated process - Formula 1 - Example

• STL Import Re-mesh surface• Volume mesh with surface prism layers• Solution• Geometry modification Solution

– Now an automated pipeline » Surface wrapping and re-mesh surface» Volume mesh» Map old solution mesh to new mesh» Continue calculation

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Formula 1 – STL Import and re-mesh

• STL Import Re-mesh surface

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Formula 1 – Volume mesh

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Formula 1 - Solution

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Formula 1 – Flap modification to Solution

Automated pipeline » Surface wrapping and re-mesh

surface» Volume mesh» Map old solution mesh to new mesh» Continue calculation

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Summary

• Customer surveys– CAE Priorities, Trends and Expectations

» Insight onto use of CAx tools» Insight into levels of Process Integration and Optimisations

– Consultation is a good thing» AUTOSIM efforts will help us to understand the customer needs » Our own consultations help us to focus our Development on

enabling technologies and Process Integration

user trends and priorities - nafems.org trends and priorities : ... 8% catia v5 pro/engineer n/a...

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