CAE Automation Tool for Pedestrian Head Impact Assessment

Paper #:
  • 2017-01-1454

Published:
  • 2017-03-28
Abstract:
Detail procedures for defining head impact test zone and impactor positioning vary significantly between GTR-9 (Global Technical Regulation) and NCAP (New Car Assessment Program) protocols. This paper will present a CAE tool that can be used for generating CAE input data for multiple head impact analysis points for a selected assessment protocol (GTR or NCAP). Altair’s Hypermesh based pre-processing tool provides a series of input files for LS-DYNA or RADIOSS simulation codes. Upon batch execution of the input files by pre-chosen crash simulation code, results are post-processed by Altair’s Hyperworks with visual display of HIC responses over the defined head impact assessment zone. Graphically presented HIC map also provides ability for detail investigation of specific problem areas by providing live links between HIC response summary map and detail graphical view of local response time histories and impact animation views. Seamless integration of pre- and post-processing capabilities in a single CAE tool makes the product engineering exercise very efficient with minimal opportunity for mistakes that possibly occur with manual calculations while dealing with hundreds of impact points over a vehicle’s test domain.
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