Arup Cellbond Barrier Models – **New: Full Width Deformable Barrier (FWDB)
Arup Cellbond Barrier Models A range of robustly validated finite element models for LS-DYNA. Full Width Deformable Shell Barrier This…
Arup Cellbond Barrier Models
A range of robustly validated finite element models for LS-DYNA.
Mobile Progressive Deformable Barrier
This barrier model is a Shell element model.
The specifications used for the development of the Mobile Offset Progressive Deformable frontal impact barrier (MPDB) have been taken from ‘Euro NCAP Mobile Progressive Deformable Barrier Face Specification’ Draft Version 1.0, 23 October 2017, TB 022. The MPDB barrier is used in the 2020 European New Car Assessment Programme (EuroNCAP) in their Frontal Impact Testing Protocol
This moving barrier replaces the existing fixed EEVC ODB barrier in the 2020 Euro NCAP update of its offset frontal impact test procedure. The new frontal ODB test setup involves an MPDB moving barrier striking a moving vehicle at a 180° angle with 50% overlap against the front end of the vehicle (both, vehicle and barrier, with an approaching speed of 50kph).
Validation
The LS-DYNA model calibration has been done using the test results provided by Cellbond for four different impact conditions. The tests involve the barrier on a trolley impacting a vertical impactor, a quarter wall, a rounded impactor and a tubular impactor (specified by Euro NCAP). The force-deflection curves for the barrier (generated from analyses and tests) have been compared. Additionally, material testing has also been performed to define the material models for the different parts of the barrier.
This validation work has been carried out in both SMP and MPP versions of LS-DYNA R9.3.0 to ensure performance and accuracy.
Specifications
| Element Type | LS-DYNA Release Version | Total Number of Elements | Timestep | Regulation Test | Regulation Speed |
|---|---|---|---|---|---|
| Shell | LS-DYNA 971 R9.3.0 SMP/MPP | 1221651 | 0.9E-6 | EuroNCAP 2020 Frontal Impact Test | Target: 50kph for vehicle and trolley |
Oasys D3PLOT and REPORTER Tools
The MPDB LS-DYNA model comes with an Oasys D3PLOT post-processing tool and Oasys REPORTER template which fully automate the post-processing of results and the calculation of the Euro NCAP compatibility modifier. These tools can be readily integrated with the official Euro NCAP compatibility assessment spreadsheet for this regulation.
The REPORTER template is easy to use and provides test-specific relevant information: compatibility penalty, barrier intrusion plot, scoring rationale, OLC calculation details and deformed screenshots among its many features.
More information on getting started with the Oasys REPORTER template is available in this short video:
If you would like to discuss this models or get a quotation please get in touch.
Brochure
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