Correlation-based feature extraction from computer-aided design, case study on curtain airbags design
Artikel i vetenskaplig tidskrift, 2022
Many high-level technical products are associated with changing requirements, drastic design changes, lack of design information, and uncertainties in input variables which makes their design process iterative and simulation-driven. Regression models have been proven to be useful tools during design, altering the resource-intensive finite element simulation models. However, building regression models from computeraided design (CAD) parameters is associated with challenges such as dealing with too many parameters and their low or coupled impact on studied outputs which ultimately requires a large training dataset. As a solution, extraction of hidden features from CAD is presented on the application of volume simulation of curtain airbags concerning geometric changes in design loops. After creating a prototype that covers all aspects of a real curtain airbag, its CAD parameters have been analyzed to find out the correlation between design parameters and volume as output. Next, using the design of the experiment latin hypercube sampling method, 100 design samples are generated and the corresponding volume for each design sample was assessed. It was shown that selected CAD parameters are not highly correlated with the volume which consequently lowers the accuracy of prediction models. Various geometric entities, such as the medial axis, are used to extract several hidden features (referred to as sleeping parameters). The correlation of the new features and their performance and precision through two regression analyses are studied. The result shows that choosing sleeping parameters as input reduces dimensionality and the need to use advanced regression algorithms, allowing designers to have more accurate predictions (in this case approximately 95%) with a reasonable number of samples. Furthermore, it was concluded that using sleeping parameters in regressionbased tools creates real-time prediction ability in the early development stage of the design process which could contribute to lower development lead time by eliminating design iterations.
Medial Axis
Curtain Airbag
Design Automation
CAD/CAE
Feature extraction
Regression Analysis
Parametric models
Machine Learning
Författare
Mohammad Arjomandi Rad
Chalmers, Industri- och materialvetenskap, Produktutveckling
Kent Salomonsson
Mirza Cenanovic
Henrik Balague
Autoliv AB
Dag Raudberget
Chalmers, Industri- och materialvetenskap, Produktutveckling
Roland Stolt
Computers in Industry
0166-3615 (ISSN)
Vol. 138 103634Ämneskategorier (SSIF 2025)
Solid- och strukturmekanik
Farkost och rymdteknik
DOI
10.1016/j.compind.2022.103634