A Customised Adams Application for the Automated Build and...
Transcript of A Customised Adams Application for the Automated Build and...
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MSC Software Confidential MSC Software Confidential
A Customised Adams Application for the Automated Build and
Assessment of Standard and Multi-trailer Heavy Vehicle Performance
or
Simulating Big Trucks !
Presented by:
Peter Brand
Technical Director, Compumod
May 14, 2013
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Compumod – Reseller of MSC in Australia and New Zealand
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Australia
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The Project was Undertaken for: WA Mainroads
Mainroads Western Australia is responsible for implementing
the state's policies on road access and main roads.
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Road Trains in Australia
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What happens when Road Trains enter Cities??
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Project Overview
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• Certify unique vehicles against performance based standards (PBS) developed by the
National Transport Commission
• Measure the dynamic performance of any heavy vehicle: • truck & trailer combinations
• articulated heavy vehicles
• special purpose vehicle such as all terrain cranes, low loaders, buses / coaches etc
Mainroads was looking for easy to use software to:
Swept Path Rearward Amplification Gradeability Tail Swing
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Software Requirements
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• Easy for users with minimum automotive and heavy vehicle knowledge
• Quickly build and test any type of heavy vehicle
• Do animations of the vehicle manoeuvres
• Have pre-built vehicle models
• Automatic assessment according to the performance based standards (PBS)
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Examples:
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B-Double
Dolly
GooseNeck
Road Train
Others: Pig trailers, Dog trailers, Buses, Cranes etc
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Broken down into three sections:
• Build Vehicle
– Create/Edit Vehicles, Platforms & Components
• PBS Simulation
– Run vehicle through PBS events
• Post Processing
– Check results, generate report
Solution: Customised GUI in Adams Truck
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• Vehicle
A complete vehicle assembly
• Platform
A building block to a vehicle (Prime Mover / Trailer)
• Component
A subsystem of a platform (Trailer body, Axle, Brakes)
Build Vehicle – System Naming Conventions
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Define the vehicle layout
• Set up Platform Sequence with Add/Remove platform
• Select from a: – Default platform
– Existing platform
– Create a new platform
• Build Vehicle
GUI: Vehicle Assembly (Build Vehicle)
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GUI: Platform Configuration
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Lane Change – 6 Trailers
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Lane Change - Dolly
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Lane Change – Dolly (Focussed)
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• Create or edit individual platforms
Body Type
Number of axles
Suspension and brake components
Wheels/Tyres etc
• Model updates as data is entered
Platform Configuration – cont.
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Platform Configuration: Rigid Truck
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Platform Configuration: Semi-Trailer
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GUI: Platform Configuration
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• Differences include:
– No hardpoints
– Locations are parametric or dependant
on input location communicators
– All dimensions, masses, CofG’s etc
are parametric
– Templates & subsystems are created on
the fly through Adams scripts (allows any number of trailers or axles to be created)
– Scripts also allow flexibility in changing building sequence (for instance dolly
created and used in one vehicle can easily be reused later in another vehicle even
at a different location)
Our Templates are Based on Standard ATruck Templates
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Implementation - Parameterization
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trailer1
Implementation – Minor Roles and Parameterization
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trailer2 trailer3
trailer1_1
trailer1_2
trailer1_3
trailer1_4
Extra load masses
trailer2_1
trailer2_2
trailer2_3
trailer2_4
trailer3_1
etc…
Dimensions and locations trailer3 dependent on kingpin
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Performance Based Standards
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• Startability
• Gradeability
• Acceleration capability
• Tracking Ability on Straight Path
• Low Speed Swept path
• Frontal Swing
• Tail Swing
• Steer Tyre Friction Demand
• Static Rollover Threshold
• Rearward Amplification
• High Speed Transient Off-tracking
• Yaw Damping Coefficient
Vehicle tests:
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• Selected vehicle is loaded and run through simulated PBS Events
PBS Simulation
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Performance Based Standards – Swept Path
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GUI outputs:
• Animations
• Distance: Minimum width
• Trace markers (Adams, CAD – DXF and IGES, excel)
• Adams graphs
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Performance Based Standards – Swept Path
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Swept Path – Cont.
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PBS: Roll Over Test
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PBS: Gradeability 20% Slope
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“PBS”: Gradeability 15% Slope + Roll Over
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Questions, Discussion and Future Directions
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• Deliver completed system to client – Q3 2013!
• Enhance GUI with more automated post-processing
• Market Solution to other potential clients
• Thanks to Joe Little and Kent West of MSC!
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