AVE:

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AVE Aerodynamics Lightweight Structures MWL
(Noise and vibration) Rail Vehicles Vehicle
Dynamics Neuronic engineering Optimazation and
System Theory
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Overall Objectives

• Within vehicle design,
• adressing
• ECOnomical and ECOlogical ECO2 aspects to
  save material and energy resources, and reduce
  emissions,
• through
• vehicle research in the areas of structural
  mechanics, noise and vibration, vehicle dynamics,
  aerodynamics, and biomechanics,
• with respect to
• Lifecycle cost, passenger and driver comfort,
  energy consumption, material selection, handling
  qualities, functionality, safety, reliability and
  other customer added values.

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Vision

• By year 2016 a world-class research centre has
  been established, focusing on technical solutions
  leading to improved performance, reliability and
  safety with a reduced impact on the environment,
  enabling a balanced system cost and maintaining
  comfort in road and rail vehicles.
• Within the Centre, vehicle design is a holistic
  process encompassing the involved individuals,
  technical solutions as well as generated methods.

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Technology leaps
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Projects within ECO2

• Take into account the Ecological and Economical
  aspects ECO2 criteria
• At least two vehicle types Multi-vehicle
• At least two disciplines Multi-disciplinary

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Projects within ECO2

• Take into account the Ecological and Economical
  aspects ECO2 criteria
• At least two vehicle types Multi-vehicle
• At least two disciplines Multi-disciplinary

Enable Technology leaps and a sustainable
developement
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Virtual Vehicles

• Based on
• The vehicle class dependent design criteria
• At least 10 years horizon
• Anticipating ECO2 compatible novel engines/motors
  being state-of-the-art in that horizon

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Virtuel Vehicles- Research method -

• Aim
• Strengthen synergies between the different
  vehicle types
• Strengthen the multidisciplinary aspect
• Strengthen the correlation between vehicle design
  and the ECO2- criteria
• Strengthen the information flow between different
  vehicle types and disciplines
• Tool for the industry to convey their point of
  view on vehicle design research
• The virtual vehicles is a tool to reach the
  vision of the Centre

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Virtual Vehicles
Project proposals
Ongoing projects
Finilized projects
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Director
Assistant Manager Group
Pelle
Jenny
Annika
Mats
Gunilla
Susann
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Organization

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Crosswind stability and unsteady aerodynamics in
vehicle design

• Improve the design of road and rail vehicles with
  respect to dynamic crosswind
• This will enhance the potential of lighter
  vehicles, which in turn will reduce energy
  consumption and air pollutions

KTH, Bombardier, Saab, Scania, Banverket,
Vägverket
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Crosswind stability and unsteady aerodynamics in
vehicle design- Objectives -

• Define critical and realistic wind gust scenarios
• Explore unsteady aerodynamic simulation methods
• Investigate the influence of vehicle external
  shapes
• Simulate vehicle/driver response to dynamic
  crosswind
• Propose less wind sensitive vehicle designs,
  including condition monitoring and driver
  handling
• Propose less wind sensitive infrastructure
  designs(to some extent)

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Multifunctional Body Panels

• Design of multifunctional body panels integrating
  two or more functions/components Outer structure
  panel, NVH treatment (both structural damping and
  sound transmission) , interior trim.
• Reduce cost, shorten the assembly times, reducing
  the overall weight while maintaining targets
• Initially project focuses on automotive
  applications but extensions to bus/truck/train
  under discussion.

KTH, Saab, A2 Acoustics, Polytec, Bombardier
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Multifunctional Body Panels- Objectives-

• Study conceptual designs of integrated body
  panels
• Focus on integration of several functions (e.g.
  structure and NVH treatment) through
  multi-layered components
• Performance (NVH and structural) at the
  same/lower cost weight, manufacturing
  efficiency, ...
• Development of computational tools and their
  integration driven by multi-attribute
  optimisation.
• Development of material models required in the
  optimisation/design process

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ECO2 Suspension design

• Goal
• To increase the knowledge on how to develop
  vehicle suspension systems, under maintained
  handling and riding comfort, with reduced
  unsprung mass, rolling resistance, tire wear,
  structure-borne noise, vibrations, suspension
  travel and/or tire size.

KTH, Volvo CE, Volvo 3P, Bombardier
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ECO2 Suspension design

• Present subprojects
• Suspension system design for optimal performance
  regarding transmission of structure-borne sound
  without any penalties in handling and riding
  comfort
• Design issues for reduced suspension travel and
  smaller wheels
• Product verification within suspension design

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Status

• Ongoing projects
• P1. Crosswind stability and unsteady aerodynamics
  in vehicle design
• P2. Multifunctional body panels
• P3. ECO2 Suspension design
• Virtual Vehicle II
• Master thesis Reduction of traffic noise and
  vehicle drag by under body sheilding,
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• More than 30 project praticipants (6
  PhD-students)
• One new PhD-student shall be employed during
  before the end of this year.
• -----------------------------------
• Ongoing project proposals
• P4. Minimal annoyance of rail and road traffic
  noise
• P1. (Subproject) ECO2 suspension design /
  Vehicle - Tyre Dynamics

P2
P3
P1
P2
P1
P3
P2
P3
P2
P1
P2
P3
P1
The project actively involves the vehicle type
P3
The project does not actively involve the
vehicle type but the knowledge is useful for the
vehicle type
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Multidisciplinary interaction
P1. Crosswind stability and unsteady
aerodynamics in vehicle design P2.
Multifunctional body panels P3. ECO2
Suspension design
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Project generation process
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