Airbag Particle Method (APM)

Airbag Particle Method (APM)



This class first presents the fun­da­men­tals to cre­ate an airbag mod­el in LS-DY­NA. We will give a brief overview of the uni­form pres­sure (UP) ap­proach. Then we will in­tro­duce the the­o­ret­i­cal back­ground and im­ple­men­ta­tion of the new­er airbag par­ti­cle method (APM). This lat­ter method is based on a par­ti­cle ap­proach us­ing mol­e­c­u­lar ki­net­ic the­o­ry and has be­come state-of-the-art for all airbag ap­pli­ca­tions due to its high ac­cu­ra­cy, nu­mer­i­cal ro­bust­ness, and ef­fi­cien­cy.

Be­sides the de­scrip­tion of *AIRBAG_­PAR­TI­CLE, as well as the re­lat­ed key­words re­gard­ing de­f­i­n­i­tion of the con­trol vol­ume, num­ber of par­ti­cles, de­f­i­n­i­tion of vents, gas prop­er­ties, etc., we will dis­cuss fur­ther mod­el­ing as­pects af­fect­ing the airbag’s be­hav­ior. We will present state-of-the-art tech­niques as well as most re­cent im­ple­men­ta­tions in LS-DY­NA with their in­flu­ence on the de­ploy­ment be­hav­ior.