High Fidelity FE Dummy Models for CAE Vehicle Safety Analysis

In 2017, by contractual agreement with ATD-Models GmbH, CDH AG acquired the rights to market, distribute and support ATD Hybrid 3 dummy and finite element (FE) impactor models in North America and Japan. ATD-MODELS GmbH is a specialist in the development of high-quality FE models for vehicle safety analysis.  The company was founded in 2009 by experts with years of experience in dummy development and occupant-safety simulation. ATD-MODELS GmbH develops highly accurate FE models in close cooperation with the German and other world-wide automobile industry partners. ATD FE models are used in the virtual development process for occupant and pedestrian protection engineering calculations.

ATD Models Features:
  • High accuracy owing to physics-based modeling techniques
  • FE models available for industry standard explicit FE codes ABAQUS*, LS-DYNA* and PAM-CRASH*
  • Commonality of modeling standards for all dummy models
  • Uniform discretization, nomenclature and numbering systems
  • Same scripts for pre and post processing
  • Same session file and application procedures
  • Full utilization of code-specific features of each solver
ATD Models Features and Advantages
Advantages to Users:
  • Systematic title nomenclature refers to the assembly groups
  • Prefix in each title description allows a fast adjustment to the nomenclature of the load case
  • Numeration not overlapping the assembly groups
  • Advantage in pre and post processing
  • Allows selection of assembly parts and groups
  • Each assembly group close defined for itself
  • Definition regarding the master, e.g. contacts relate to the assembly group #
ATD Models Features and Advantages

* The trade names are the property of the owning companies.

ATD MODEL of the advanced Pedestrian Leg Impactor (aPLI)

At the Euro-NCAP board meeting held on 7th February 2019 members voted to adopt the advanced Pedestrian Legform Impactor (aPLI) with simplified upper body mass for future Euro NCAP pedestrian safety testing. The design specifications and associated injury probability functions were discussed by the international experts of ISO, TC22, SC36, WG5 and WG6. Physical models, designed and developed by Cellbond, have been subjected to rigorous worldwide testing, and exhibit excellent stability and repeatability characteristics.

aPLI

In year 2018, ATD-MODELS GmbH began development of an FE model of the aPLI in close cooperation with Cellbond, the hardware developer and manufacturer. The ATD-aPLI is an accurate FE representation of the Cellbond aPLI hardware model, including characteristics such as a pre-stressed tissue, neoprene skin and detailed geometry implementation. The FE model was successfully validated against physical measurements in General Vehicle Test Rig (GVTR) in 0, and +/-30-degree angles. The ATD-aPLI is available for explicit FE codes ABAQUS*, LS-DYNA* and PAM-CRASH* and enables users to perform accurate FE simulations to meet latest pedestrian protection consumer regulations.

aPLI

* The trade names are the property of the owning companies.

ATD MODEL of the Hybrid III 50% Male Dummy

With the ATD-H350 we offer our customers a dummy model which is created with our special modelling techniques and therefore represents a very realistic virtual model.

Some characteristics of the ATD-H350 are:

  • Prestressed chest and jacket
  • Prestressed joint bumpers
  • Technical insight through accurate implementation of the geometry
ATD-H350

ATD MODEL of the Hybrid III 5% Female Dummy

With the ATD-H305 we offer our customers a dummy model which is created with the same special modelling techniques successfully used with the ATD-H350 and therefore represents a very realistic virtual model.

Some characteristics of the ATD-H305 are:

  • Prestressed chest and jacket
  • Prestressed joint bumpers
  • Implementation of the jacket geometry using information from CT scanning
  • Technical insight through realistic implementation of the geometry
ATD-H305

ATD MODEL of the Hybrid III 95% Male Dummy

The ATD-H395 was modelled and numbered in the same way as the other ATD Hybrid-III-Dummies. This enables the analyst already using ATD dummy models to easily include the ATD-H395 model in existing scripts for simulation and reporting. The precise modelling results in accurate simulation and insight for particularly demanding load cases such as heavy occupant knee mapping and interactions with restraint systems.

Some characteristics (similar to those of the ATD-H350/305): of the ATD-H395 are:

  • same numbering as the other ATD-HIII-Dummies
  • Prestressed chest and jacket
  • Prestressed joint bumpers
  • Modelling insight through realistic implementation of the geometry
ATD-H395

ATD MODEL of the SAE J826 H-Point-Manikin

The ATD-HPM is based on advanced modelling techniques resulting in a very realistic FE model of the SAE J826 H-Point-Manikin. The model allows users to accurately position the dummy and perform virtual crash measurements in CAE. Areas of applications include finite element simulations for seat configurations and dummy positions, for example, the back-set for whiplash. ATD-HPM FE models are available for hardware configurations with white or red pans.

Some characteristics of the ATD-HPM are:

  • A realistic implementation of the geometry and mass distribution of the hardware manikin
  • Pre-processor dialog for calibration according to the scales on the hardware
  • Detailed implementation of the setup scales, which allows easy comparisons to readings on hardware
  • Two models (dependent on hardware) are available:
    • ATD-HPM with white pans
    • ATD-HPM with red pans
ATD-HPM

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