This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Tear Seam Breakout Model Development for Side Airbag (SAB) Deployment through the Seat
Technical Paper
2022-01-0867
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Current numerical simulation practice does not capture the seat mounted Side Airbag (SAB) breaking out through the seat tear seam and its correct early deployment characteristics. A late SAB breakout negatively impacts full SAB deployment and occupant coverage. An early breakout enhances timely SAB positioning and coverage, providing early cushioning to the occupant from the intruding barrier. This paper presents a numerical modeling process capable of predicting and enhancing seat tear seam breakout time and early SAB deployment kinematics.
The critical phases used in the development of SAB breakout modeling process are as follows: Phase 1: Physical Tear Seam and Seat Trim coupon tests to characterize physical material properties for the numerical material model development; Phase 2: Numerical Modeling of the Tear Seam and Seat Trim breakout and, Phase 3: Numerical prediction of SAB breakout through a candidate seat tear seam.
In the last phase of the study, the validated material models of the trim and tear seam were evaluated for the realistic deployment of the side airbag, modeled using Corpuscular Particle Method (CPM), through the seat tear seam.
Results from the study illustrate a systematic process for material model development of seat tear seam breakout. Accurate representation of the breakout of the tear seam coupled with advanced airbag modeling techniques allows simulation of realistic deployment of the SAB through the seat. This results in numerical prediction of the path of SAB deployment, its coverage and breakout force, thus avoiding potential injury to the occupant due to either an early interaction with a deploying airbag or delayed coverage due to late deployment.
Recommended Content
Authors
Citation
Anantharaju, N., Uduma, K., Bala, S., and Keshtkar, H., "Tear Seam Breakout Model Development for Side Airbag (SAB) Deployment through the Seat," SAE Technical Paper 2022-01-0867, 2022, https://doi.org/10.4271/2022-01-0867.Also In
References
- Rules and Regulations Federal Register 73 111 2008
- Uduma , K. , Wu , J. , Beaudet , B. , and Pawargi , D.S. Assessment Metric Identification and Evaluation for Side Airbag (SAB) Development SAE Technical Paper 2012-01-0257 2011 https://doi.org/10.4271/2011-01-0257
- Anantharaju , N. , Uduma , K. , and Shi , Y. Evaluation of Corpuscular Particle Method (CPM) in LS-DYNA for Airbag Modeling Society of Automotive Engineers (SAE) World Congress Experience (WCX 2020) 2020
- Livermore Software Technology Corporation (LSTC) 2018