Download - Virtual Seat Prototyping Mar2011 Short

Copyright © ESI Group, 2009. All rights reserved.Copyright © ESI Group, 2009. All rights reserved.

Virtual Seat Prototyping :to build it right the first time

1


• Massage

Customers comfort requests• Support

2

How to bring revolutionary innovative changes to seats,

while cutting the development costs drastically?

Safety regulations

• Regulatory / Third party• Multiple markets

Environment regulations

• Recycling

• Weight reduction

Customers anthropometries

• Population getting larger• Interior space reduction

• Heating, air conditioningCustomer requests

Seat design

Structural foams for frame

Soy, coconut for foam

Innovative seat adjustments

Innovative mechanisms

Innovative lumbar support

Active componentsIntegrated systems

Imbedded heating pads Imbedded fans

NVH and Durability

• Vibration absorption

• No wrinkles, no bridging gaps

Innovative damping systems

Innovative cover materials

SEAT PROTOTYPINGTHE CHALLENGE

Copyright © ESI Group, 2009. All rights reserved.Copyright © ESI Group, 2009. All rights reserved. 3

1st Proto

Classical Seat Development ProcessStart of production

Trial-and-error loops on physical prototypesCostly design changesDifficult tuning of new materialsWeak synergies

Certainly not with the standard classical development process based on trial-and-error loop on physical prototypes Too slow, too expensive to leave space to innovation

SEAT PROTOTYPINGTHE DIAGNOSIS

Copyright © ESI Group, 2009. All rights reserved.Copyright © ESI Group, 2009. All rights reserved. 4

1st Proto

Virtual Seat PrototypingStart of productionStart of production

Trial-and-error loops on virtual prototypesBest practice integrationEasy and fast design changes (ex. materials)Anticipation of the impact of new materialsEasier evaluation and optimizationImproved synergies: the bigger picture with a single model

Including virtual seat prototyping is one answer.

SEAT PROTOTYPINGTHE OBJECTIVE


With virtual seat prototyping


References

l BMW: “Virtual Seat Comfort Assessment”, C. Amann, T. Klisch, A. Huschenbeth, BMW Group, N. Montmayeur, C. Marca, ESI Group, VDI Congress, Nov. 2005, Braunschweig.

“Virtual Assessment of Occupied Seat Vibration Transmissibiltiy”, C. Amann, A. Huschenbeth, R. Zenk, BMW Group, N. Montmayeur, C. Marca, C. Michel, ESI Group, SAE DHM conference, June 2008, Pittsburgh, PA.

p RENAULT Group: “Virtual Seat Comfort Design”, J. Makala, A. Savary, Renault Group, N. Montmayeur, C. Marca, ESI Group, IQPC Conference, Feb. 2007, Frankfurt

“Virtual Seat Comfort Assessment for Low-Frequency Ride Comfort”, A. Savary, J.P. Leclerc, J. Makala, Renault Group,, 5th Symposium on Automobile and Railroad Comfort, Nov. 2008, Le Mans, France.

a FORD Group: “Virtual Seat Manufacturing and Testing for FMVSS 202a Backset prediction”, N. Montmayeur, C. Marca, D. Dwarampudi, ESI Group, M. Kolich, S. Nunez, Ford Motor Company, SAE DHM conference, June 2007, Seattle, WA.

“Virtual Seat Comfort Engineering through Hardness and Initial Softness Prediction”, N. Montmayeur, C. Marca, C. Cabane, D. Dwarampudi, ESI Group, M. Kolich, S. Nunez, Ford Motor Company, SAE DHM conference, June 2007, Seattle, WA.

“Virtual Seat Comfort Assessment through Affective Fore-Aft Lumbar Travel Prediction with a HPM-II Dummy Model”, N. Montmayeur, C. Marca, C. Cabane, D. Dwarampudi, ESI Group, M. Kolich, S. Nunez, Ford Motor Company, 7th CTI Forum, June 2007, Munich.

a HYUNDAI Motor Company / DYMOS “New Anthropometry of Human Body Models for Riding Comfort Simulation”, S.-H. Kim, S.-H. Hwang, K.N.Lee, Hyundai Motor Company, H.-Y. Choi, K.M.Kim, S. Sah, Hong-Ik University, N. Montmayeur, ESI Group, SAE DHM conference, June 2007, Seattle, WA.

. GENERAL MOTORS, TOYOTA BOSHOKU, GRUPO ANTOLIN, MAZDA, HONDA,…


Conclusion

« This simulation input can really be considered as an "ultra realistic" model, since it allows the simulation of the whole complex mechanical phenomena of the seat, the non-linearity of the materials, the large displacements of the cushion foam and springs, as well as the effect of the cover trimming. »

« The developed models and methodology allow the computation of

predictive results, using only physical parameters and without any tuning or filtering. This good correlation between simulations and tests confirms the ability to assess the riding seat comfort in a full virtual process. »

“Virtual Seat Comfort Assessment for Low-Frequency Ride Comfort”, A. Savary, J.P. Leclerc, J. Makala, Renault Group, 5th Symposium on Automobile and Railroad Comfort, Nov. 2008, Le Mans, France.


THANK YOU !

Virtual Seat Prototyping :the bigger picture…to build it right the first time

Download - Virtual Seat Prototyping Mar2011 Short

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