Werner Pohl, Contact Software GmbH Klemens Rother, Christian Löffl, Munich University of Applied Sciences

klemens.rother@hm.edu

NEW HOLISTIC APPROACHES FOR CAX-BASED

CONCEPTUAL DESIGN

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Introduction and Motivation

Description of Research Project

Selected Topics

Summary

Agenda

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

1. Introduction and Motivation

Objectives for development in the automotive industry:

Much more innovative cars need to be developed and will be

developed!

Managing requirements on the desired product is mandatory for

successful frontloading

Managing collaboration in conceptual design to improve efficiency

Creation and analysis of alternatives and use of optimization to fully

scan the design space available

Reversing the weight spiral is an objective

Strengthen collaborative design and engineering to improve “logistics

of knowledge” and remove obstacles

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

More innovative car bodies required

„Conversion Design“

„Purpose Design“

[AUDI]

[SMART]

[Opel] [Rother. IAA,2011] [Rother MichelinChallengeBibendum: 2011]

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Much more innovative cars need to be developed

Managing requirements on the desired product

Managing collaboration in conceptual design Creation and analysis of alternatives and use of optimization

Reversing the weight spiral

Strengthen collaborative design and engineering

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Creation and analysis of alternatives and use of

optimization to fully scan the design space available

Traditional Desired

Simulation driven Process Generation of alternatives, mutations

Optimization

Robustness

Reliability

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Reversing the weight spiral is an objective

[Trautwein, T., Henn, S., Rother, K.: Weight Spiral - Adjusting Lever in Vehicle Engineering, Vol. 113, ATZ 05/2011, Vieweg Verlag, Wiesbaden (2011) ]

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Much more innovative cars need to be developed

Managing requirements on the desired product

Managing collaboration in conceptual design

Creation and analysis of alternatives and use of optimization

Reversing the weight spiral

Strengthen collaborative design and engineering

to improve “logistics of knowledge” and remove

obstacles

Seite 10

23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

2. Description of Research Project

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

3. Selected Topics

Parametric modeling of geometry

Coupling industrial design (styling) and structural design

Simplified analysis methods for conceptual models

Data and knowledge management

…

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Parametric modeling of geometry

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Functional based modeling approach vs. CSG/BREP

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

[Marijanovic, Michael: Prozessentwicklung von Konstruktionsmethoden innerhalb der virtuellen Karosserie-Konzeptentwicklung. Diploma thesis, Munich University of Applied Sciences (2012)]

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Concept modeling and detailed design

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Coupling Industrial Design and Structural Design

[Salfinger, Armin: Designabsicherung in der „Frühen Phase“, mit Hilfe einer Schnittstelle zwischen dem FCM und Maya. Diploma thesis, Munich University of Applied Sciences (2012) ]

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Simplified analysis methods for conceptual models F

orc

e, M

om

en

t

elastic range

peak load, initiation of

deep plastic collapse

deep plastic

collapse with

folding

squash load,

full crushing length

used up or

jamming of a hinge

deep plastic

collapse without

jamming

deformation (translational, rotational)

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Simplified analysis methods for conceptual models

[Rustaee Khoshkbijari, Mohammad: Crashgerechte Absicherung von parametrisierten Fahrzeug-Konzeptmodellen. Diplomathesis, Munich University of Applied Sciences (2010) ]

Analytical

Approach

Physical

Test

Deviation

Fmax 94,3% 100% 5,7%

Fmean 97,3% 100% 2,7%

Smax 100,8% 100% 0,8%

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Data and Knowledge management

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23.10.2015

NAFEMS World Congress 2013

9-12 June 2013 | Salzburg | Austria

Summary