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8399631 
Journal Article 
Method to determine the explosion power of an automobile airbag 
Chen, W; Chen, D; Chen, L; Fang, Q 
2020 
39 
2 
163-168 
Chinese 
An airbag is a passive protection system for automobiles, in which chemical substance was filled. It can be detonated when the vehicle collision accident takes place, and a large amount of gas would be released simultaneously. However, unexpected accidental explosions often take place in the process of manufacturing, transporting, storing, and using of airbags, resulting in casualties and destruction of facilities. To calculate the explosion power of automobile airbags accurately, a theoretical calculation method was proposed to determine the TNT equivalence of a typical vehicle airbag, on the basis of the chemical composition of a typical gas generator and the similarity theory of the explosion heat energy. By virtue of the three explosion reaction equations of airbags, the TNT equivalence of typical airbags were determined to be 33.6 g, 37.3 g and 31.6 g respectively, and the average TNT equivalence was 33.8 g. An equivalent FE model for airbag explosion was also developed in the LS-DYNA. The reliability and accuracy of the proposed theoretical calculation method was verified by comparing the results of FE model with the existing test results of airbag explosion. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved. 
Airbag; Explosion heat; TNT equivalence