RNTBCI is a key player in Renault-Nissan CAE landscape. By merging the teams and organizing upper body CAE development by domains, Indian engineers are now able to support remote activities for both OEMs. Not only for performance validation, we are now challenged to support innovation activities, propose countermeasure that deals with performance trade-off and reduce the lead time. In this context, a partnership has been built with Altair in India. Altair India is giving local expertise to help RNTBCI develop and support local as well as remote activities in 3 main domains: Automation, Optimization and Innovation. Partnering with Altair enabled us to propose significant reduction in the lead time and the validation of performance in the openings and body structure area. Metier automation scripts were developed to enhance the development process. In the optimization domain, we implemented MDO and Inspire. MDO was proposed to evaluate performance trade-off between Crash and NVH on a headlamp, and Inspire was used to support local upstream designs of localized parts in various domains. Finally, Altair local expertize enabled our CAE team to support local innovation laboratory to evaluate new concepts for the future line-up. Speakers Guillaume Mesplont, Renault Nissan Technology and Business Center India

1. CAE1| 15 July 2015
“Partnering with Altair to Improve Efficiency and
Increase Innovation through Simulation Driven
Design”
29th September, 2015

2. 2Confidential |
Agenda
 About Renault-Nissan in India
 Challenges in vehicle development
 Partnering with Altair
 Examples
 Innovation
 Automation
 Inspire
 MDO

3. 3Confidential |
Agenda
 About Renault-Nissan in India
 Challenges in vehicle development
 Partnering with Altair
 Examples
 Innovation
 Automation
 Inspire
 MDO

4. 4Confidential |
CHENNAI
 Renault Nissan Technology & Business Center India Pvt. Ltd.,
 Strategically located at Chennai
About RNTBCI…
Airport
National
Highway No.5
(Kolkatta Highway)
National
Highway No.4( Bangalore Highway ) Chennai Port
Ennore Port


Hyundai
National
Highway No.45(GST Road)
Mahindra
World City –
Saint Gobain
Flextronics
Nokia
Ford
Visteon
NMIPL –
Nissan ,
Marketing
, Sales
RNAIPL
Oragadam
Plant
RNTBCI
Center
RIPL –
Renault ,
Marketing
, Sales
NAT
RIP

5. 5Confidential |
Operational from
April 08
Operational from
March 09
Phase 1 Phase 2
• R & AE
• Vehicle & P/Train
• Global Engg. Support
• Process Engineering
• Cost Estimation
• IS/IT
• Purchase
• BPO
• SSC (Shared Service
Center)
BusinessTechnology
Renault Nissan Technology & Business Centre India
ENGG.
IS/IT
Purchase
BPO
SSC
 Joint Venture of Renault and Nissan.

6. 6Confidential |
 Providing Innovative Automotive Solutions to India
Renault Nissan Fleet in India

7. 7Confidential |
Agenda
 About Renault-Nissan in India
 Challenges in vehicle development
 Partnering with Altair
 Examples
 Automation
 Innovation
 Inspire
 MDO

8. 8Confidential |
Model Setup Report CM &
Optimization
80 % of time 20 % of time
Model Setup CM & Optimization
Reduce Time
Report
Value added Task
Today’s Challenges
 Optimum design in the concept phase
 Optimizing the design for Multi domain

9. 9Confidential |
Agenda
 About Renault-Nissan in India
 Challenges in vehicle development
 Partnering with Altair
 Examples
 Innovation
 Automation
 Inspire
 MDO

10. 10Confidential |
Why partnering with Altair in India?
Chennai
Bangalore
RNTBCI
 Alliance CAE center
 >300 HC
 Remote and local projects upstream
and Developpment
Altair Technical Center
Bangalore
 >500 Developers
 ESG team
 Huge force of development in Altair Technical center Bangalore
 Only 50mn flight

11. 11Confidential |
Automation
Local design
innovation
support
[Radioss]
Upstream
Optimization
[Inspire]
Multi
domain
Optimization
[MDO]
Altair Partnership main Areas

12. 12Confidential |
Agenda
 About Renault-Nissan in India
 Challenges in vehicle development
 Partnering with Altair
 Examples
 Automation
 Innovation
 Inspire
 MDO

13. 13Confidential |
1. Automation
 Example : front door static stiffness evaluation
 Over 40 different load cases
 Each time have to setup the model, launch calculation, post process and
make the report
Average13hrs

14. 14Confidential |

15. 15Confidential |
 Benefits & Perspectives
1. Automation
 625 man days (3 engineers) of manual
work saved
 This workforce can be used for value
added tasks such as Optimization and
Counter-measures.
 Opportunity to deploy automation for
other Openings calculations

16. 16Confidential |
2. Innovation : Using Radioss for Airbag
Deployment Simulation Methods
• Available methods in RADIOSS
• UP : Uniform Pressure
– Pressure is constant anywhere within the airbag volume
– Gas property, injector, vent holes, and jetting effect can be setup on the monitored volume
– Multiple chambers can be defined
• CEL : Coupled Euler Lagrange
– Airbag set into a « cube » of air (Euler/ALE 3-D hexa)
– Airbag fabric (Lagrange 2-D shell) coupled with
a specific CEL fluid/structure interface (TYPE18)
– Gas flow computed using ALE (Arbitrary Lagrange-Euler) method
• FVM : Finite Volume Method *
– Air inside the bag automatically/transparently meshed and re-meshed during the computation
– Airbag input almost same as in Uniform Pressure input card
– Gas flow computed using ALE method
 LOCAL LCI in India – Collaborative innovation laboratory – is developing inflating
parts. Need to simulate inflation and deflation time

17. 17Confidential |
3. Inspire
• Turn table
• Seat
• Chassis

18. 18Confidential |
Inspire Example #1 - TurnTable
Filling the design space and
applying boundaries
 Rotating table concept

19. 19Confidential |
Inspire Example #2 – 3rd Row seat base bracket
Pivot
points
Seat Base
mountings
Base Bracket Details
 3rd row seat base bracket design optimization

20. 20Confidential |
Inspire Example #3 - Chassis
Cas 1 Fx = +xxxN (effort centre roue)
Fy = +xxxN (effort pied de roue)
Fz = -xxxN (centre ressort)
Cas 2 Fx = -xxxN (effort centre roue)
Fy = -xxxN (effort pied de roue)
Fz = -xxxN (centre ressort)
Pied de roue
Centre roue
Centre ressort
 Local project chassis part mass reduction

21. 21Confidential |
Head lamp mounting brackets are considered as the design variable to meet crash
performance and NVH performance of the head lamp assembly
4. MDO – Case study
 Headlamp support Bracket combined NVH/Crash Optomozation

22. 22Confidential |
Target responses:
Crash Requirement:
The contact force should be less than 3500 N
NVH Requirement :
The first Natural Frequency should be more than 30
Hz
Min / Max Thickness allowable:
Min Thickness Allowable is 0.8mm
Max Thickness Allowable is 1.8mm
4. MDO – Benefit
 Thickness is optimized to reach both NVH and Crash targets at the same
time

23. 23Confidential |
Conclusion
Partnering with Altair in India main benefits:
 Support for new technologies development and competencies ramp-up
 Help reduce the lead time with the development of scripts for automation
 Enhance capabilities for C/M studies on project developpment

24. 24Confidential |