UN R66 Structural Design Inputs
Engineering support for preparing vehicle geometry, structural data, mass information, connections and design inputs for rollover-related assessment and superstructure development.
Rollover performance begins with the vehicle structure
Structural continuity, load paths, joints, pillars, roof members, openings, mass distribution and the position of the residual space must be considered during the vehicle design stage. Late structural corrections can create significant weight, cost and programme impact.
Reliable assessment requires controlled input data
Structural geometry, material properties, joints, vehicle mass, centre-of-gravity information and the actual vehicle configuration must be consistent. Incorrect or incomplete inputs can produce misleading engineering conclusions.
Engineering inputs from structural concept to assessment preparation
Support can be provided during initial vehicle development, design revision, derivative preparation or investigation of an existing superstructure.
Structural geometry review
Review of pillars, roof members, side structures, cross-members, openings, reinforcements and structural continuity.
Material and section data
Organisation of material grades, section dimensions, wall thicknesses and available mechanical-property information.
Connection definition
Review and documentation of welded, bolted, bonded and mechanical joints relevant to structural behaviour.
Mass and centre-of-gravity inputs
Preparation of vehicle mass distribution, component positions, load conditions and centre-of-gravity information.
Residual-space preparation
Definition and positioning of the applicable residual-space geometry according to the vehicle layout and assessment scope.
Design-improvement support
Development of reinforcement, section, joint and structural-layout revisions based on identified risks and assessment findings.
Key inputs affecting superstructure performance
The final scope must be agreed for the actual vehicle, structural configuration and assessment method.
From vehicle data to controlled structural-design actions
Collect
Structural CAD, drawings, sections, materials, masses and vehicle configuration data are collected.
Review
Geometry, load paths, joints, openings and residual-space inputs are examined.
Prepare
Analysis or assessment inputs are organised according to the agreed project method.
Evaluate
Structural findings, critical areas and unresolved assumptions are reviewed.
Improve
Approved reinforcement and structural revisions are incorporated into the vehicle design.
Traceable structural inputs for assessment and design development
Structural-data package
Organised CAD, drawings, member sections, thicknesses, materials and connection information.
Mass and configuration package
Vehicle masses, equipment positions, loading assumptions and centre-of-gravity inputs.
Risk and action list
Critical structural areas, missing inputs, unresolved assumptions and recommended engineering actions.
Design-revision inputs
Proposed section, reinforcement, joint and layout revisions for the next vehicle-design iteration.
Need to prepare a vehicle superstructure for rollover assessment?
Send us the structural CAD data, vehicle drawings, materials, section information, connection details, mass data and intended vehicle configuration. We will review the input package and define the required engineering work.