The pedestrian protection technology must be used in automotive design if China-made automotives want to compete and grow strong in the world in the future. In this paper, a CAE simulation analysis is made for a domes...The pedestrian protection technology must be used in automotive design if China-made automotives want to compete and grow strong in the world in the future. In this paper, a CAE simulation analysis is made for a domestic sedan car hood to check whether it meet the pedestrian safety protection laws and regulations. Results show that the original car cannot meet the demands of the rules. In order to meet the standards of the pedustrian protection rules, the car hood should undergo structural improvements. Tested again by CAE simulation analysis, the car after a series of improved design can reached the 3-star class EuroNCAP( Euro New Car Assessment Program)standard of the car pedestrian safety protection laws and regulations.展开更多
对国产某新型三厢紧凑型轿车的发动机罩进行合理改进设计后,对其进行《欧洲议会及理事会指令2003/102/EC European New Car Assessment Programme——关于在与机动车辆发生碰撞前和发生碰撞时对行人和其它易受伤害的道路使用者的保护》...对国产某新型三厢紧凑型轿车的发动机罩进行合理改进设计后,对其进行《欧洲议会及理事会指令2003/102/EC European New Car Assessment Programme——关于在与机动车辆发生碰撞前和发生碰撞时对行人和其它易受伤害的道路使用者的保护》要求的有限元技术分析。结果表明:该发动机罩能够满足行人保护法规要求,且达到了EuroNCAP三星评价。展开更多
针对汽车车身局部修形传统气动减阻方法存在经验式和盲目性问题,以某款成熟简化实车发动机罩低阻曲面优化减阻为例,提出了基于硬点-骨架约束的车身低阻曲面优化设计法.采用DOE(design of experiment)试验设计方法对发动机舱罩进行硬点采...针对汽车车身局部修形传统气动减阻方法存在经验式和盲目性问题,以某款成熟简化实车发动机罩低阻曲面优化减阻为例,提出了基于硬点-骨架约束的车身低阻曲面优化设计法.采用DOE(design of experiment)试验设计方法对发动机舱罩进行硬点采样,通过硬点-骨架约束建立样本曲面.构建以硬点为设计因子,阻力系数为响应值的数学近似模型,并使用多岛遗传算法获得发动机舱罩理论最优解.计算表明:优化后的实车车模气动阻力减少3.32%,证明了硬点-骨架约束在车身减阻上的可行性和有效性.展开更多
文摘The pedestrian protection technology must be used in automotive design if China-made automotives want to compete and grow strong in the world in the future. In this paper, a CAE simulation analysis is made for a domestic sedan car hood to check whether it meet the pedestrian safety protection laws and regulations. Results show that the original car cannot meet the demands of the rules. In order to meet the standards of the pedustrian protection rules, the car hood should undergo structural improvements. Tested again by CAE simulation analysis, the car after a series of improved design can reached the 3-star class EuroNCAP( Euro New Car Assessment Program)standard of the car pedestrian safety protection laws and regulations.
文摘对国产某新型三厢紧凑型轿车的发动机罩进行合理改进设计后,对其进行《欧洲议会及理事会指令2003/102/EC European New Car Assessment Programme——关于在与机动车辆发生碰撞前和发生碰撞时对行人和其它易受伤害的道路使用者的保护》要求的有限元技术分析。结果表明:该发动机罩能够满足行人保护法规要求,且达到了EuroNCAP三星评价。
文摘针对汽车车身局部修形传统气动减阻方法存在经验式和盲目性问题,以某款成熟简化实车发动机罩低阻曲面优化减阻为例,提出了基于硬点-骨架约束的车身低阻曲面优化设计法.采用DOE(design of experiment)试验设计方法对发动机舱罩进行硬点采样,通过硬点-骨架约束建立样本曲面.构建以硬点为设计因子,阻力系数为响应值的数学近似模型,并使用多岛遗传算法获得发动机舱罩理论最优解.计算表明:优化后的实车车模气动阻力减少3.32%,证明了硬点-骨架约束在车身减阻上的可行性和有效性.