CAJ | 학술논문

利用CATIA实体建模功能，创建了壁障模型、汽车后防护装置的实体模型和小车的实体模型，并应用有限元的思想对所有模型进行材料定义、网格划分等前处理。运用ANSYS/LS-DYNA对壁障与其后防护装置的动态碰撞试验进行仿真以及对皮卡与其后防护装置进行追尾碰撞仿真，根据仿真结果，评价了该防护装置的防护性能。同时，对在发生偏置碰撞时防护装置的防护性能进行了研究。在仿真分析结果的基础上设计了一种新型吸能式的汽车后防护装置结构，并通过理论研究和整车追尾碰撞仿真验证了新型汽车后防护装置的可行性与优越性。
이용CATIA실체건모공능，창건료벽장모형、기차후방호장치적실체모형화소차적실체모형，병응용유한원적사상대소유모형진행재료정의、망격화분등전처리。운용ANSYS/LS-DYNA대벽장여기후방호장치적동태팽당시험진행방진이급대피잡여기후방호장치진행추미팽당방진，근거방진결과，평개료해방호장치적방호성능。동시，대재발생편치팽당시방호장치적방호성능진행료연구。재방진분석결과적기출상설계료일충신형흡능식적기차후방호장치결구，병통과이론연구화정차추미팽당방진험증료신형기차후방호장치적가행성여우월성。
3D models of rear under -run protection devices , mobile deformable barrier and car were established using CAT-IA solid modeling functions .All models were pre-proceeding with finite element method .The mobile deformable barrier to rear under-run protection device and car to rear under -run protector were simulated using ANSYS/LS-DYNA.The performance of the rear under-run protection device was assessed and the performance of the rear under -run protection device was studied by width offset collision simulation .A new energy absorption type under -run protection device was designed which can improve the energy absorption property .By vehicle rear-end collision simulations the optimized feasibility of protective devices was verified .