CAJ | 학술논문

针对目前货车后下部防护装置难以保证防止钻撞功能的问题，对后下部防护装置进行优化设计。依据GB 11567．2-2001对汽车后下部防护装置的要求，利用LS-DYNA仿真软件对优化后的后下部防护装置进行碰撞仿真对比分析。通过动态仿真优化前后的后下部防护装置在碰撞过程中的变形、碰撞速度、碰撞减速度以及吸能情况，证明优化后的后下部防护装置在各项性能上都得到了提高，在发生后车追尾碰撞的时候，既能缓冲瞬时冲击，又能有效阻挡后车钻入，避免恶性事故发生。
침대목전화차후하부방호장치난이보증방지찬당공능적문제，대후하부방호장치진행우화설계。의거GB 11567．2-2001대기차후하부방호장치적요구，이용LS-DYNA방진연건대우화후적후하부방호장치진행팽당방진대비분석。통과동태방진우화전후적후하부방호장치재팽당과정중적변형、팽당속도、팽당감속도이급흡능정황，증명우화후적후하부방호장치재각항성능상도득도료제고，재발생후차추미팽당적시후，기능완충순시충격，우능유효조당후차찬입，피면악성사고발생。
To solve the problem on rear bumper of a truck which has no functions of blockage and damping and energy absorption , rear bumper is optimized and simulative analysis and validation are carried out with LS -DYNA in accordance with related regulation of GB 11567.2-2001 concerning rear bumper .The simulation analysis of deformation velocity and deceleration show that the optimized design of the rear bumper after the performance has been optimized , can weaken the instantaneous impact , and avoid the rear car to im-pact the truck .