G030113 Impact Response Characteristics of Pedestrian Head in Various Automobile Bonnet Structures

Abstract

Motor vehicles on the market have been required to undergo the pedesUian head protectien test since 2( X) 4 and engine − ho〔xls need to meet the required standardS fbr pedes 面 an head protection perf ( )nnance in addition to pr ary perfcrmance ． The quality of e ゆ e − hoOd is evaluated by Head injury ( Xiteria ( HIC )derived frcmi 3dmensional acceleration generated against the head． Based on 田 C measurements ， 血e au 山 α s 面 ed to improve it is perb ance by using 由e hood wi 血 pand s血 c 田 re ． h 曲 s血 dy ， we examined impact response characteristics of the pedestrian head by numerical analysis ． We focus on 血 e brain concussion and the skU11 丘acture as a severe i 巾 ry to be 両 ured at 重 he dme ofan engine − hood collision ． As a result ， we revealed about mechanism of the head injury r by dyna血 c deformation behavi (rr ofthe engine − hood， Key W 加 ds： Engine − hood( Bonnet ) ， Pedestrian protect ， Head injury criteria ( H 【 C ) ， Concussion ， Skull fracture ， Negative pressure ， Mises stress ．