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TRIMIS

Crashworthiness of joints in aluminium rail vehicles

Project

ALJOIN - Crashworthiness of joints in aluminium rail vehicles


Funding origin:
European
European Union
STRIA Roadmaps:
Vehicle design and manufacturing (VDM)
Vehicle design and manufacturing
Transport mode:
Rail
Rail
Transport sectors:
Passenger transport
Passenger transport
Freight transport
Freight transport
Duration:
Start date: 01/08/2002,
End date: 01/07/2005

Status: Finished
Funding details:

Overview

Background & policy context:

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Aluminium alloys are now in widespread use in Europe and elsewhere for rail vehicle construction from commuter to express trains. The main contributor to the success of aluminium alloys as structural materials in rail transport is the development of closed cell aluminium extrusions that can easily be welded together to form lightweight rail vehicles with high inherent rigidity that could not be achieved with older designs.

As rail transport is becoming more popular throughout Europe, there is an increased need t

Objectives:

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The aim of the project can be summarised as providing sufficient knowledge to design cost effective aluminium rail vehicle bodies that will not fail by catastrophic joint failure under extreme loading. To achieve this overall goal several specific objectives were addressed:

  • determine the performance specifications required by critical aluminium joints in rail vehicle cars to ensure the structural integrity
  • provide physical evidence of the energy absorption ca

Methodology:

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The strategy that ALJOIN used to approach the problem can be described as follows:

  • creation of performance criteria for the properties of aluminium welds in the new generation of rail vehicles in terms of their stress/strain performance
  • assessing the existing methods of joining techniques and joints
  • static and dynamic modelling of joints and structures
  • formulating new joining techniques and joints
  • definition of a method for assessing crashworthiness
  • demonstration and validation of the innovative technologies developed against the performance criteria.

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