This paper used the Hyper Mesh and LS-DYNA software to establish a dummy-seat finite element simulation model. The head, chest and neck injury of the dummy were analyzed respectively in the frontal impact and rear imp...This paper used the Hyper Mesh and LS-DYNA software to establish a dummy-seat finite element simulation model. The head, chest and neck injury of the dummy were analyzed respectively in the frontal impact and rear impact. It was indicated that modification of seat was needed to meet the requirements. The simulation results showed that the original model cannot provide effective protection for the occupants and need for structural improvements. According to the simulation results of deformation and stress conditions of the seat parts, the original seat structure was improved and optimized for four improvement schemes, including the structure optimization of the seat side panel, the center hinge, framework under the cushion and the backrest lock. The results indicated that the optimized seat improved the occupant protection performance by reducing occupant damage parameters compared with original seat, which illustrated that the optimization basically met the target.展开更多
High voltage safety is very important for electric vehicles, how to ensure the passengers’ safety in traffic accidents is animportant research subject. This paper describes a study of the high-voltage safety of an el...High voltage safety is very important for electric vehicles, how to ensure the passengers’ safety in traffic accidents is animportant research subject. This paper describes a study of the high-voltage safety of an electric vehicle under rear impactconditions to ensure that it is in accordance with Chinese regulations. The high-voltage safety has been analyzed and optimizedfrom several perspectives and includes the development of a high-voltage cutoff strategy, assessment of the integrity of thehigh-voltage components after the crash, the layout of the high-voltage and low-voltage cables, and the crashworthiness ofthe structure. This study resolved the high-voltage safety problems that were found in the design phase and thus ensured thatthe vehicle not only meets the requirements of the Chinese regulations, but also meets the high-voltage safety requirementsof US Federal Motor Vehicle Safety Standard (FMVSS) 305 for 80 km/h rear impact.展开更多
文摘This paper used the Hyper Mesh and LS-DYNA software to establish a dummy-seat finite element simulation model. The head, chest and neck injury of the dummy were analyzed respectively in the frontal impact and rear impact. It was indicated that modification of seat was needed to meet the requirements. The simulation results showed that the original model cannot provide effective protection for the occupants and need for structural improvements. According to the simulation results of deformation and stress conditions of the seat parts, the original seat structure was improved and optimized for four improvement schemes, including the structure optimization of the seat side panel, the center hinge, framework under the cushion and the backrest lock. The results indicated that the optimized seat improved the occupant protection performance by reducing occupant damage parameters compared with original seat, which illustrated that the optimization basically met the target.
文摘High voltage safety is very important for electric vehicles, how to ensure the passengers’ safety in traffic accidents is animportant research subject. This paper describes a study of the high-voltage safety of an electric vehicle under rear impactconditions to ensure that it is in accordance with Chinese regulations. The high-voltage safety has been analyzed and optimizedfrom several perspectives and includes the development of a high-voltage cutoff strategy, assessment of the integrity of thehigh-voltage components after the crash, the layout of the high-voltage and low-voltage cables, and the crashworthiness ofthe structure. This study resolved the high-voltage safety problems that were found in the design phase and thus ensured thatthe vehicle not only meets the requirements of the Chinese regulations, but also meets the high-voltage safety requirementsof US Federal Motor Vehicle Safety Standard (FMVSS) 305 for 80 km/h rear impact.
