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2

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AVE:AerodynamicsLightweight StructuresMWL (Noise and vibration)Rail VehiclesVehicle Dynamics

Neuronic engineeringOptimazation 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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Annika

Susann

Pelle

Mats

Jenny

Gunilla

Director

Assistant Manager Group

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Organization

…

Figure 5. Proposed organization of the Centre.

International Advisory Board

Board

CCG – Centre Coordination

Group (Director, AMG, TM, EM)

Director

AMG - Assistant Management Group

Steering Committee

Steering Committee

Steering Committee

Project Project Project Project Project

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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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• 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)

Crosswind stability and unsteady aerodynamics in vehicle design- Objectives -

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• 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.

Multifunctional Body Panels

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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• 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.

ECO2 Suspension design

KTH, Volvo CE, Volvo 3P, Bombardier

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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

ECO2 Suspension design

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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.

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Ongoing project proposals:

P4. Minimal annoyance of rail and road traffic noise

P1. (Subproject) ECO2 suspension design / Vehicle - Tyre Dynamics

P3

P3

P3

P3

P3

P2

P2

P2

P2

P2

The project actively involves the vehicle type

The project does not actively involve the vehicle type but the knowledge is useful for the vehicle type

Status

P1

P1

P1

P1

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Multidisciplinary interaction

Sound and VibrationsAerodynamics

Vehicle DynamicsP1

P1

P3P2

P2

P3

P3

P1

ECO2

aspects

Lightweight

structures R

ailw

ay

tech

nolo

gy

P1. Crosswind stability andunsteady aerodynamics in vehicle design

P2. Multifunctional body panels

P3. ECO2 Suspension design

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Project generation process

Ideas

Research project

PhD/Senior

Virtual Vehicle

Centre Coordination

GroupRecommend

ations

Priority/Decision

BoardEvaluation

Virtual Vehicle

Virtual vehicle Ideas

Research project

PhD/Senior

Research project

PhD/Senior

Research project

PhD/Senior

Virtual VehicleVirtual VehicleVirtual Vehicle

Centre Coordination

Group

Centre Coordination

Group

Centre Coordination

GroupRecommend

ationsRecommend

ations

Priority/Decision

BoardBoardBoardEvaluation

Virtual VehicleVirtual VehicleVirtual Vehicle

Virtual vehicleVirtual vehicleVirtual vehicle

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