Innovative Knee Airbag Design to Address ATD Knee-Thigh-Hip Response in the Small Overlap Rigid Barrier (SORB) Crash Test

Paper #:
  • 2017-01-1447

Published:
  • 2017-03-28
Abstract:
In 2012, the Insurance Institute for Highway Safety (IIHS) added a new frontal impact test to its vehicle crashworthiness rating protocol, often referred to as the “Small Overlap Rigid Barrier” (SORB) test. The objective of the present numerical study was to develop an innovative driver knee airbag (KAB) to address anthropomorphic test device (ATD) Knee-Thigh-Hip (KTH) response relative to the IIHS’s rating system of “Good, Acceptable, Marginal or Poor”. The approach used in this study utilized advanced morphing techniques in a sophisticated finite element (FE) model of a vehicle with an ATD and a restraint system. The key challenge in the study was to manage vehicle deformation with minimal changes to the KAB inflator and volume. Several KAB designs in terms of (width, height and depth) were simulated until a design resulted in changing the KTH rating from “Poor” to “Good”. The current FE study highlights the use of finite element (FE) and Computer Aided Engineering (CAE) tools in predicting a robust design of an airbag component during design and development cycle of a vehicle. Keywords: SORB, finite element, KTH, Knee Airbag, CAE
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